698BT000005 - Inverter Salicru - Free user manual and instructions
Find the device manual for free 698BT000005 Salicru in PDF.
| Product Type | Inverter / Uninterruptible Power Supply (UPS) |
| Model | 698BT000005 |
| Brand | Salicru |
| Input Voltage | 230 V AC (220-240 V range) |
| Output Voltage | 230 V AC (pure sine wave) |
| Capacity (VA/Watts) | 1000 VA / 900 W |
| Battery Type | Sealed lead-acid, maintenance-free |
| Battery Runtime | Approximately 10-15 minutes at full load |
| Dimensions (H x W x D) | 200 mm x 310 mm x 430 mm |
| Weight | 12.5 kg |
| Input Frequency | 50/60 Hz (auto-sensing) |
| Output Frequency | 50/60 Hz (synchronized to mains) |
| Transfer Time | < 10 ms typical) |
| Protection Features | Overload, short circuit, overvoltage, undervoltage, battery deep discharge |
| Interface | USB, RS-232 (optional) |
| Noise Level | < 45 dBA at 1 meter |
| Operating Temperature | 0°C to 40°C |
| Certifications | CE, IEC |
Frequently Asked Questions - 698BT000005 Salicru
User questions about 698BT000005 Salicru
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
Download the instructions for your Inverter in PDF format for free! Find your manual 698BT000005 - Salicru and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. 698BT000005 by Salicru.
USER MANUAL 698BT000005 Salicru
natural_image
Exterior view of a black Siemens I/O converter with two ventilation units and digital displays (no visible text or symbols)UNINTERRUPTIBLE POWER SUPPLY
UPS SLC TWIN RT series
0.7.. 10 kVA
General index
1. Introduction.
1.1. Acknowledgement letter.
2. Information for safety.
2.1. Using this manual.
2.1.1. Conventions and used symbols.
3. Quality and standard guarantee.
3.1. Declaration of the management.
3.2. Standard.
3.2.1. First and second environment.
3.2.1.1. First environment.
3.2.1.2. Second environment.
3.3. Environment.
4. Presentation.
4.1. Views.
4.1.1. Views of the equipment.
4.1.2. Legends corresponding to the equipments views.
4.2. Definition of the product.
4.2.1. Nomenclature.
4.3. Operating principle.
4.3.1. Main features.
4.4. Options.
4.4.1. Isolation transformer.
4.4.2. External maintenance manual bypass.
4.4.3. Integration in IT networks by means of the SNMP adaptor.
4.4.4. Relays interface card.
4.4.5. Parallel cable kit.
4.4.6. MODBUS protocol.
4.4.7. Telescopic guide kit for rack cabinet assembling in.
5. Installation.
5.1. To be considered in the installation.
5.2. Reception of the equipment.
5.2.1. Unpacking, content checking and inspection.
5.2.2. Storage.
5.2.3. Unpacking.
5.2.4. Procedure to take out and install the batteries in equipments of 4 to 10 kVA
5.2.5. Vertical -tower type- or rack models.
5.2.5.1. Rotation of control panel with LCD.
5.2.5.2. Taking out or putting the beautiful front cover.
5.2.5.3. Vertical -tower type-assembling.
5.2.5.4. Vertical -tower type- assembling, with extended back up time (battery module).
5.2.5.5. 19" rack cabinet mounting.
5.2.5.6. 19" rack cabinet assembling, with extended back up time (battery module).
5.3. Connection.
5.3.1. Connection of input.
5.3.2. Connection of the static bypass power blocks (> 3 kVA models power rate only).
5.3.3. Connection of the IEC outlets and output power blocks.
5.3.4. Connection of the external batteries (extended back up time).
5.3.5. Connection of main input earth terminal ( ) and the earth bonding terminal ( ).
5.3.6. Terminals for EPO (Emergency Power Off).
5.3.7. "Dry_in" terminals, remote ON-OFF (0,7 to 3 kVA equipments only).
5.3.8. "Dry_out" terminals, dry contact for alarm (0,7 to 3 kVA equipments only).
5.3.9. Connection in parallel.
5.3.9.1. Introduction to the redundancy.
5.3.9.2. Installation and parallel operating (4 to 10 kVA equipments only).
5.3.10. Communication ports.
5.3.10.1. RS232 and USB interfaces.
5.3.10.2. Smart slot.
5.3.10.3. Relays interface (option).
5.3.11. Software.
5.3.12. Considerations before starting up the connected loads.
6. Operating.
6.1. Commissioning.
6.1.1. Controls before commissioning.
6.2. UPS start up and shutdown.
6.2.1. Start up and shutdown of the UPS.
6.2.2. Start up of the UPS, without mains.
6.2.3. UPS shutdown, with mains present.
6.2.4. UPS shutdown, without mains.
6.3. Operative for a parallel system (4 to 10 kVA models only).
6.4. How to replace a faulty UPS in a parallel system.
6.5. Manual Bypass Switch (maintenance).
6.5.1. Operating principle.
6.5.2. Transference to maintenance bypass.
6.5.3. Transference to normal mode.
7. Control panel with LCD.
7.1. Control panel.
7.1.1. Acoustic alarms.
7.1.2. UPS status and color LCD display, as condition.
7.1.3. Main screen.
7.2. Operating modes of the equipment.
7.3. Operating of the LCD panel.
7.3.1. Main screen.
7.3.2. UPS status submenu.
7.3.3. Data logger submenu.
7.3.4. Measurement submenu.
7.3.5. Control submenu.
7.3.6. Identification submenu.
7.3.7. Setting submenu.
7.4. Special functions
7.4.1. Operating on ECO mode.
7.4.1.1. Short description of the ECO mode.
7.4.1.2. To establish the ECO mode function.
7.5. Operating as frequency converter.
7.5.1.1. Short description of the frequency converter function.
7.5.1.2. To establish the Converter mode function.
8. Maintenance, warranty and service.
8.1. Battery maintenance.
8.1.1. Notes for installing and replacing the batteries.
8.2. UPS Trouble Shooting guide.
8.2.1. Troubleshooting guide. Alarm or fault indications.
8.2.2. Troubleshooting guide. Warning indications.
8.2.3. Troubleshooting guide. Other circumstances.
8.3. WARRANTY CONDITIONS.
8.3.1. Warranty terms.
8.3.2. Out of scope of supply.
8.4. Technical service network.
9. Annexes.
9.1. General technical specifications.
9.2. Glossary.
1. Introduction.
1.1. Acknowledgement letter.
We would like to thank you in advance for the trust you have placed in us by purchasing this product. Read this instruction manual carefully in order to be familiarized with its contents, because, as much as you know and understand the equipment the highest will be your satisfaction and safety levels and their features will be optimized too.
We remain at you entire disposal for any further information or any query you should wish to make.
Yours sincerely.
SALICRU
- The equipment here described can cause important physical damages due to wrong handling. This is why, the installation, maintenance and/or fixing of itself must be done by our staff or qualified personnel exclusively.
- Although we have made every effort to guarantee a complete and accurate information in this user's manual, we are not responsible for any errors or omissions that may exist.
The images included in this document are mere illustrations and they could not represent the part of the equipment exactly, therefore they are not contractual. Nevertheless, differences that could exist will be alleviated or solved with the correct labelling of the equipment. - According to our policy of constant evolution, we reserve the right to modify the specifications, operating or described actions in this document without forewarning.
- Any reproduction, copy or third party concession, modification or partial or in whole translations of this manual or document, in any format or media, is prohibited without the previous written authorization of our firm, being reserved the full and exclusive ownership right over it.
2. Information for safety.
2.1. Using this manual.
The generic information of the equipment is supplied in digital format in a CD-ROM, and it includes among other documents the own user's manual of the system and the EK266*08 document concerning to «Safety instructions». Before doing any action over the equipment regarding installation or commissioning, change of location, setting or handling, read them carefully.
This user's manual is intended to provide information regarding the safety and to give explanations about the procedures for the installation and operating of the equipment. Read them carefully and follow the stated steps in the established order.

Compliance as regards to "Safety instructions" is mandatory, being the user the legal responsible regarding to its observance and application.
The equipments are delivered duly labelled for the correct identification of any their parts, which combined with the instructions described in this user's manual, allows the end-user to make any operating of both installation and commissioning, in an easy and ordered way without doubt.
Finally, once the equipment is installed and operative, for future requests or doubts that could arise, it is recommended to keep the CD-ROM documentation in a safe place with easy access.
The following terms are used in the document indistinctly to be referred to:
- «SLC TWIN RT, TWIN RT, TWIN, RT, equipment, unit o UPS». - Uninterruptible Power Supply.
Depending on the context of the sentence, it can be referred either to the own equipment or to the equipment with batteries, although all is assembled in one cabinet or metallic enclosure. - «batteries or accumulators».- Group or set of elements that store the electron flow through electrochemical means.
• «T.S.S.».- Technical Service & Support. - «client, fitter, operator or end-user».- are used indistinctly and by extension, to be referred to the fitter and/or operator which will make the corresponding actions, being responsible the same person about the actions to take on behalf of himself.
2.1.1. Conventions and used symbols.
Some symbols can be used and shown in the equipment and/or in the description of this user's manual.
For more information, see section 1.1.1 of EK266*08 document as regards to «Safety instructions».
3. Quality and standard guarantee.
3.1. Declaration of the management.
Our target is the client's satisfaction, therefore this Management has decided to establish a Quality and Environmental policy, by means of installation a Quality and Environmental Management System that becomes us capable to comply the requirements demanded by the standard ISO 9001 and ISO 14001 and by our Clients and concerned parts too.
Likewise, the enterprise Management is committed with the development and improvement of the Quality and Environmental Management System, through:
- The communication to all the company about the importance of satisfaction both in the client's requirements and in the legal and regulations.
- The Quality and Environmental Policy diffusion and the fixation of the Quality and Environment targets.
• To carry out revisions by the Management.
• To provide the needed resources.
3.2. Standard.
The SLC TWIN RT product is designed, manufactured and commercialized in accordance with the standard EN ISO 9001 of Quality Management Systems. The marking shows the conformity to the EEC Directive by means of the application of the following standards:
• 2014/35/EU. - Low Voltage Directive (LVD).
• 2014/30/EU. - Electromagnetic Compatibility (EMC).
- 2011/65/EU. - Restriction of Hazardous Substances in electrical and electronic equipment (RoHS).
In accordance with the specifications of the harmonized standards. Standards as reference:
- EN-IEC 62040-1. Uninterruptible power supply (UPS). Part 1-1: General and safety requirements for UPS's used in accessible areas by end users..
- EN-IEC 60950-1. IT equipments. Safety. Part 1: General requirements.
- EN-IEC 62040-2. Uninterruptible power supply (UPS). Part 2: EMC requirements.

The manufacturers responsibility is excluded in the event of any modification or intervention in the product by the customer's side.

WARNING!: SLC TWIN RT 0,7.. 3 kVA. This is a category C1 UPS product.
SLC TWIN RT 4.. 10 kVA. This is a category C2 UPS product. In a residential environment, this product may cause radio interference, in which case the user may be required to take additional measures.

Declaration of conformity CE of the product is at the client disposal under previous request to our headquarters offices.
3.2.1. First and second environment.
The following examples of environment cover the majority of UPS installations.
3.2.1.1. First environment.
Environment that includes residential, commercial and light industrial premises directly connected without intermediate transformers to a public low-voltage mains supply.
3.2.1.2. Second environment.
Environment that includes all commercial, light industry and industrial establishments other than those directly connected to a low-voltage mains that supplies buildings used for residential purposes.
3.3. Environment.
This product has been designed to respect the environment and has been manufactured in accordance with the standard ISO 14001.
Equipment recycling at the end of its useful life:
Our company commits to use the services of authorised societies and according to the regulations, in order to treat the recovered product at the end of its useful life (contact your distributor).
Packaging:
To recycle the packaging, follow the legal regulations in force, depending on the particular standard of the country where the equipment is installed.
Batteries:
The batteries mean a serious danger for health and environment. The disposal of them must be done in accordance with the standards in force.
4. Presentation.
4.1. Views.
4.1.1. Views of the equipment.
Figures from 1 to 3 are shown the illustrations of the equipment depending on the format of the case and regarding the power rate of the model. Nevertheless and due to the product is in constant evolution, some small discrepancies or contradiction can arise. In case of doubt, the labelling of the own equipment will always prevail.

In the nameplate sticked in the equipment, all the data referred to the main features of the equipment can be checked. Act in accordance with the installation.
4.1.2. Legends corresponding to the equipments views.
| Symbols and their meaning | |||
| Symbol Meaning Symbol Meaning | |||
![]() | Warning Earth | ![]() | |
![]() | Risk of discharge Alarm si ![]() | ||
![]() | UPS ON / Battery test | ![]() | Overload |
![]() | UPS OFF Battery | ![]() | |
![]() | UPS on Standby or shutdown | ![]() | Recycling |
![]() | Alternating (AC) | ![]() | Keep the UPS in a cooled place |
![]() | Direct (DC) | ||
Tabla 1. Used symbology in the equipment and/or this manual.

Fig. 1. Front view of models from 0,7 to 10 kVA and battery modules for extended back up times.

Models of 2 kVA (B1)

Models of 3 kVA standard

Models of 3 kVA (B1)

Models from 4 to 6 kVA standard

Fig. 2. Rear view models from 0,7 to 10 kVA.

The connection of the battery module with the equipment and/or with other module is done from the front panel in equipments up to 6kVA. To do it, it will be needed to remove the front plastic trim of all the racks, to have access to the connection connectors ready for this purpose.

Fig. 3. Rear view of the battery modules for extended back up times.
4.2. Definition of the product.
4.21. Nomenclature.
SLC-8000-TWIN RT (B1) WCO "EE29503"

natural_image
Pure geometric lines forming a stepped L-shape without any text, numbers, or symbolsEE* Special specifications of the client.
CO “Made in Spain” marking in the UPS and packaging (custom issues).
W Neutral brand.
(B0) No batteries and no space to fit them in.
(B1) Equipment with extra charger and batteries out from UPS.
TWIN RT Series of the equipment.
8000 Power in VA.
SLC Brand acronym (for SAI).
CF Frequency converter (without batteries equipment).
MOD BAT TWIN RT 2x6AB003 40A WCO "EE29503"

natural_image
Pure geometric line pattern with nested right-angle brackets (no text or symbols)EE* Special specifications of the client.
CO “Made in Spain” marking in the UPS and packaging (custom issues)..
W Neutral brand.
40A Protection size.
003 Last three characters of battery code.
AB Initials of the battery family.
6 Battery quantity in one string.
2x Quantity of strings in parallel. Omitted for one.
0/ Battery module without them, but the needed accessories to install them.
TWIN RT Series of the battery module.
MOD BAT Battery module.

Note relative to the batteries:
B0 and B1 acronyms stated the nomenclature related to batteries:
(B0) The equipment is supplied without batteries and without accessories for them (screws and electrical cables).
Batteries are property of the client, and they will be fitted out of the UPS case or cabinet.
Under request, it is possible to supply the accessories (screws and electrical cables), needed to install and connect the external batteries.
(B1) Equipment with extra battery charger. The equipment is supplied without batteries and without accessories for them (screws and electrical cables), corresponding to the stated batteries in the model.
Under request, it is possible to supply the accessories (screws and electrical cables), needed to install and connect the batteries.
For those equipments requested without batteries, the acquisition, installation and connection of themselves will always be done by client and under his responsibility.
Regarding the battery data of quantity, capacity and voltage stated in the nameplate sticked of the equipment, respect this data and the polarity of the battery connection strictly.

In equipments with separate bypass line, a galvanic isolation transformer has to be installed in any of both UPS input power supplies (rectifier input or static bypass), in order to avoid the direct connection of both lines through the internal wiring of the equipment.
This is only applicable, when both power supply lines come from different electrical networks, for example:
- Two different electrical companies.
- One from an electrical company and the other from a generator set, ...
4.3. Operating principle.
This manual describes the installation and operating of the Uninterruptible Power Supply (UPS) from SLC TWIN RT series, as equipments that can work as a single units or connected in parallel with a maximum of two units (equipments higher than 3 kVA only).
UPS from SLC TWIN RT series assures a maximum protection of any critical load, keeping the power supply voltage to the loads between the stated parameters, with no break, when a failure, fluctuation or deterioration happen in the electrical commercial mains and with wide range of available models (from 0,7 kVA to 10 kVA) and allow adapting the model to the end-user needs.
Thanks to the used technology, PWM (pulse width modulation) and the double conversion, the UPSs from SLC TWIN RT series are compact, cold, silent and with high efficiency.
The double converter principle cancels any perturbation of the energy mains fluctuations. A rectifier converts the AC alternating current from mains into DC direct current, which keeps both the optimal battery charge level and supplies the inverter that at the same time generates a sinewave AC alternating voltage ready to supply the loads permanently. In case of input mains power supply fault, the batteries supply clean energy to the inverter.
The design and UPS construction from SLC TWIN RT series have been done in accordance with the international standards.
In models up to 3 kVA, there are available IEC outlets associated to configure groups by means of the control -LS1 and LS2-. At higher power models available automatic protections per each outlet group and also they have terminals to make the corresponding power connection.
The complete series has connectors for USB and RS232 ports and EPO too for an external installation by the end-user of a an emergency button, as an option. In the models from 0,7 to 3 kVA it is supplied a dry contact to install a remote start up and shutdown of the equipment (Dry-in), as well as an auxiliary contact as an alarm (Dry-out).
As an option, inside the smart slot, one of the following communication cards can be inserted: AS-400 interface, SNMP for controlling the equipment via Web or card for Internet or Intranet managing.
Models from 4 to 10 kVA, allow the parallel connection of a second equipment of the same features for a redundant configuration or to increase the available power. This connection can be done at any time and it does not condition the acquisition of itself. Likewise, this power range has manual bypass.
It is possible to increase the standard back up time of the equipment by connecting additional battery modules. In order to optimise the recharging time of the batteries, there are equipments that incorporate battery chargers with higher quality performances (B1). This option (B1) is not available for power rates higher than 3 kVA.
The flexibility of this series to manage a wide range of IT devices, it makes the best option to protect your LAN, servers, workstations and other electrical devices, and to ensure that your business is protected against fluctuations of voltage, frequency, electrical noises, blackouts and mains faults, which are present in the energy distribution lines.
This manual is applicable to the standardised models stated in table 2.
4.3.1. Main features.
- True on-line with double conversion technology and output frequency independent from mains.
- Output power factor 0,9 and pure sinewave, suitable for almost any kind of loads.
- Input power factor > 0,99 and high general efficiency (between 0,87 and 0,9 for models 0,7 to 3 kVA and > 0,93 for higher power rates). It is obtained both a higher energy saving and lower cost of installation to the end-user (wiring), as well as low input current distortion, therefore the pollution in the power supply is minimised.
- High adaptability to the worst conditions of the input mains. Wide input voltage range, frequency range and wave shape, so it is avoided the excessive dependence of the limited energy of the battery.
- Availability of the extended back up times, by adding additional battery modules.
- Possibility to connect two equipments in parallel (models with power rate higher than 3 kVA only).
- High efficiency mode > 0,95 selectable (ECO-MODE). Energy saving, which revert to the user in an economic way.
- Possibility to start up the equipment without mains or battery discharged. Be careful with the last aspect, because the back up time will be decreased as much they are discharged.
- The technology of smart battery management is very useful to extend the battery lifetime and to optimise the recharging time.
- Standard communication options through RS-232 or USB ports.
• Remote emergency power off control (EPO).
• Control signal of remote emergency power off (EPO).
- Interface between user and equipment through the control panel LCD screen and led indicators, friendly use.
• Available option connectivity cards to improve the communication capacity.
- Firmware updating in an easy way, without needing the Service and Technical Support (S.T.S.).
- Simplified maintenance, which allows replacing the batteries in a secure way without shutdown the UPS.
- Installation of the rack or tower equipment, with adaptable control panel (horizontal or vertical) to the required installation mode.
| Model Type Input / | output tipology | |
| SLC-700-TWIN RT | Standard | Single phase / Single phase |
| SLC-1000-TWIN RT | ||
| SLC-1500-TWIN RT | ||
| SLC-2000-TWIN RT | ||
| SLC-3000-TWIN RT | ||
| SLC-4000-TWIN RT | ||
| SLC-5000-TWIN RT | ||
| SLC-6000-TWIN RT | ||
| SLC-8000-TWIN RT | ||
| SLC-10000-TWIN RT | ||
| SLC-700-TWIN RT (B0) | No batteries | Single phase / Single phase |
| SLC-1000-TWIN RT (B0) | ||
| SLC-1500-TWIN RT (B0) | ||
| SLC-2000-TWIN RT (B0) | ||
| SLC-3000-TWIN RT (B0) | ||
| SLC-4000-TWIN RT (B0) | ||
| SLC-5000-TWIN RT (B0) | ||
| SLC-6000-TWIN RT (B0) | ||
| SLC-8000-TWIN RT (B0) | ||
| SLC-10000-TWIN RT (B0) | ||
| SLC-700-TWIN RT (B1) | Large back-up time with additional charger | Single phase / Single phase |
| SLC-1000-TWIN RT (B1) | ||
| SLC-1500-TWIN RT (B1) | ||
| SLC-2000-TWIN RT (B1) | ||
| SLC-3000-TWIN RT (B1) | ||
Tabla 2. Standardized models.
4.4. Options.
Depending on the selected configuration, the equipment can include any of the following options:
4.4.1. Isolation transformer.
The isolation transformer, provides a galvanic isolation that allows isolating the output from the input completely.
The installation of an electrostatic shield between the primary and secondary windings of the transformer provides a high level of attenuation of the electrical noises.
The isolation transformer can be installed at the input or output of the UPS from SLC TWIN RT series and it will always be located out from the equipment enclosure.
4.4.2. External maintenance manual bypass.
The purpose of this option is to isolate electrically the equipment from mains and critical loads, without breaking the power supply to the loads. Therefore, in this way the maintenance or fixing tasks can be done in the equipment with no interruption on the power supply energy to the protected system, at the same time that unnecessary risks are avoided to the technical staff.
The basic difference between this option and the manual bypass integrated in the own UPS enclosure in models of higher power rate than 3 kVA, consists in a better manoeuvring, because it allows a complete disconnection of the UPS from the installation
4.4.3. Integration in IT networks by means of the SNMP adaptor.
The big IT systems based on LANs and WANs that integrate servers with different platforms, they have to include an easy way of controlling and management at the manager system disposal. This facility is got through the SNMP adaptor, which is well-known by the main software and hardware manufacturers
The available SNMP option for SLC TWIN RT series is a card to be inserted into the slot that the UPS has in its rear side.
The connection of the UPS with the SNMP is internal meanwhile the connection between the SNMP and the IT network is done through a RJ45 connector 10 base.
4.4.4. Relays interface card.
See section 4.3.10.3.
4.4.5. Parallel cable kit.
The parallel cable kit is used to make the parallel communication control between two equipments of the same power rate that makes a system.
4.4.6. MODBUS protocol.
The big IT systems based on LANs and WANs, many times they require that the communication with any device to be integrated in the IT network has to be done by means of an industrial standard protocol.
One of the most used industrial standard protocols in the market is the MODBUS protocol. SLC TWIN RT series is also ready to be integrated in this type of environments through the external "SNMP TH card" device with MODBUS protocol.
4.4.7. Telescopic guide kit for rack cabinet assembling in.
There is available only one model of telescopic guide kit for all models, suitable for any type of rack cabinet.
These guides allow installing any unit of the TWIN RT equipment and their possible battery modules, in case of extended back up times, as it was a rack with its respective cabinet.
5. Installation.
• Check the Safety instructions (see chapter 2).
- Check that the data in the nameplate are the required by the installation.
- A wrong connection or manoeuvring, can make faults in the UPS and/or loads connected to itself. Read carefully the instructions of this manual and follow the stated steps in the established order.
- The equipments can be installed and used by personnel with no specific training just with the help of this «Manual» only, less those ones that are hardwired, which have to be installed by qualified personnel.
- All connections of the equipment including the control (interface, remote panel, ...), will be done with the switches at rest and no voltage present (UPS power supply switch to «Off»).
- Never forget that the UPS is an electrical energy generator, so the user has to take the needed cautions against direct and indirect contacts.
- When there is only one equipment, omit all the instructions of this document and their implicit connections as regards to parallel systems.
- Parallel system installation needs a switchgear panel with separate input, output and static bypass protections, and a manual bypass too.
This switchgear panel allows isolating only one equipment from the system, when facing any malfunctioning and supplying the loads with the rest of equipments during the preventive maintenance or during the reparation of itself, in redundant systems.
Under request a manual bypass panel can be supplied for a single equipment or a particular system.
- In parallel systems, the length and cross section of the cables that go from the switchgear panel till each UPS and vice versa, will be the same for all of them without any exception.
- Battery circuit is not isolated from input voltage. Hazardous voltages can be found out between the battery terminals and earth. Check that there is not input voltage before doing any intervention on them.
5.1. To be considered in the installation.
- Depending on the power of the equipment, there is a power cord with plug or it is hardwired for input and IEC outlets or hardwired for output, as connection parts for power. The rest of connections are done through the connectors, including the connection of the equipment with the battery module.
- Terminals for separate bypass line are only available in TWIN RT models higher than 3 kVA.
- Cross cable section of the bypass, input and output lines, will be calculated from the currents stated in the nameplate of each equipment, and respecting the Local and/or National Low Voltage Electrotechnical Regulations.
- Protections of the switchgear panel, will have the following features:
☐ For input and bypass lines, type B for RCD devices and C characteristic for circuit breakers.
☐ For the output (load feeding), C characteristic for circuit breaker.
Regarding the size, they will be as minimum to the currents stated in the nameplate of each UPS.
- In the nameplate of the equipment there are only printed the nominal currents as it is stated in the safety standard EN-IEC 62040-1. To calculate the input current, the power factor and the efficiency of the equipment have been considered.
Overload conditions are considered as nonpermanent and exceptional operating mode.
- If it is added peripherals to the input, output and/or bypass like transformers or autotransformers to the UPS, the currents stated in the own nameplates of those elements has to be considered in order to use the suitable cross sections, by respecting the Local and/or National Low Voltage Regulation.
- When an equipment incorporates a galvanic isolation transformer, as standard, as an option or either installed by yourself, either at the UPS input, bypass line, output or at all of them, protections against indirect contact has to be fitted in (residual current device) at the output of each transformer, because due to its specification of isolation it will prevent the triggering of the protections fitted in the primary of the transformer in case of electrical shock in the secondary (output of the isolation transformer).
- Remind you that all external isolation transformers already installed or supplied from factory, has the neutral of the secondary connected to earth by means of a cable bridge between both terminals. If it were required an isolated output neutral, remove this cable bridge, keeping the precautions stated in the respective local and/or national low voltage regulations.
- According to the most current trends, all the UPSs have batteries inside the same rack enclosure of the equipment, but in counterpart the resultant weight in the models from 4 to 10 kVA is notoriously high (see the stated weights in the table 13 and/or in the own packaging of the equipment).
Attend the recommendations stated in document EK266*08 regarding to weight handling. Makes easy the installation of this power range in a rack cabinet when the handling labours are done manually, the battery block has to be removed from the equipment according to the procedure described in section 5.2.4..
- Battery protection is by means of fuse and internal, so it is no accessible by the end-user.
Battery modules have internal protections by fuse, and they are not accessible by the end-user too.
5.2. Reception of the equipment.
5.21. Unpacking, content checking and inspection.
• To unpacking, see section 5.2.3.
- On receiving the device, make sure that it has not suffered any damage in transport (impact, drop, ...) and its features correspond with the ones in the order, so it is recommended to unpack the UPS and make a first visual inspection.
- In case of observing damages, make all pertinent claims to the transport agency or in their lack to our company.

Never start up an equipment when external damages can be observed.
- Also check that the data in the nameplate sticked in the packaging and in the equipment, correspond to the ones stated in the order, so it is required to unpack it (see section 5.2.3). Otherwise, make a nonconformity as soon as possible, by quoting the serial number of the equipment and references in the delivery note.
- Check the contents of the packaging. Depending, if we are checking an equipment or battery module, the contents will vary.
□ Equipment:
-The own equipment.
-Quick guide in paper.
-1 power cord for input connection -schuko plug and IEC connector- (Standard UPS of 3 kVA only).
-3 cables for output connection with IEC connectors (equipments up to 3 kVA only).
-1 communication cable RS232.
-1 communication cable USB.
-4 plastic pieces to be joint two by two to fit the UPS in vertical position (only equipments 4 to 6 kVA).
-2 metallic pieces and bolts to fit the UPS in vertical position (equipments higher than 3 kVA).
- Two metallic pieces with L shape to adapt the equipment to rack format.
Battery module:
-The own equipment.
-1 connection cable for protection earth, to link the equipment and module.
- 2 plastic pieces to adapt the supports of vertical installation of the UPS and batteries (battery modules for equipments up to 3 kVA only).
-1 metallic piece and bolt to joint the battery module with the equipment on tower format.
- Once the reception is finished, it is advisable to pack the UPS and the battery module/s again till its commissioning in order to protect it against mechanical shocks, dust, dirt, etc...
5.2.2. Storage.
- Storage of the equipment will be done in a dry place, safeguard from rain, protected from dust, water jets or chemical agents. It is advisable to keep the equipment and the battery pack/s, into their original packages, which have been designed to assure the maximum protection during the transport and storage.
- In equipments that include Pb-Ca batteries, the figures, stated in table 2 of the EK266*08 document, of charge period time depending on the temperature that they are exposed, must be respected, otherwise the warranty will be invalidated.
- After this period of time, connect the equipment to mains and together with battery module/s, if any, start it up according to the instructions described in this manual and charge them for 12 hours.
In equipments higher than 3 KVA ready for its parallel connection, it is not needed to make the connection between the equipments to charge the batteries. It can be treated as separate units to charge them.
- Finally, shutdown the equipment, disconnect it and fit the UPS and batteries in their original packaging, noting the new battery charge date on each respective label.
- Do not store the devices where the ambient temperature exceeds above 50irc C or below -15irc C, otherwise it may degrade the electrical characteristics of the batteries.
5.2.3. Unpacking.
- The packaging of the equipment consists of a cardboard enclosure, expanded polystyrene corner pieces (EPS), polyethylene foam (EPE), polyethylene sleeve and band, all of them are recyclable materials; therefore they should be disposed according to current regulations. We recommend to keep the packaging in case its use is necessary in the future.
• Proceed as follows:
☐ Cut the strips of cardboard enclosure.
☐ Remove the accessories (cables, supports, ...)
☐ Remove the equipment or battery module from the packaging, keeping in mind that the it is needed the help of a second person depending on the weight of the model or use the suitable mechanical mediums.
☐ Remove the protection corners from the packaging and the plastic bag.

Do not leave the plastic bag at the children hand, due to the risk that it means.
☐ Check the equipment before proceeding and in case damages where confirmed, contact with the supplier or in lack of it with our firm.
5.2.4. Procedure to take out and install the batteries in equipments of 4 to 10 kVA.
- According to the current trends, all the UPSs have batteries inside the same rack enclosure of the equipment, but on the contrary the resultant weight from 4 to 10kVA models is very high (see weights stated in the table 13 and/or in the own packaging of the own equipment).
Attending the recommendations stated in the document EK266*08 regarding the weight manipulation and to make easier the installation of this power range in the rack cabinet when the manipulations are done by hand, the battery block has to be removed from the equipment.
Proceed as follows to remove the battery block or pack, based on one pack for 4 to 6 kVA models and two packs for 8 and 10 kVA models (see figure 4):
☐ Remove the front beautiful cover of the equipment according to the procedure described in section 5.2.5.2., considering that 8 and 10 kVA models there is a second front cover, which has to be removed too in the same way.
☐ Remove the blocking cover/s from battery pack, removing the fixing screws first.
☐ Using the handle that each battery pack has, remove the battery block by pulling from it till removing it completely.
Consider that each battery pack is wired and connected to the electronic unit by means of a fast connection connector, so there could be some resistance to its disconnection.
In 8 and 10 kVA models remove the second battery pack.
- Depending on the required assembling type, vertical -tower type - or to be installed in the rack cabinet, proceed as it is described in the respective sections.
• Finally, insert the battery pack/s again.
When fitting in the battery block, make sure that it is inserted till the end. The correct electrical joint between the connector
of the battery pack and the equipment depends on it.
- Put the blocking cover back for the battery pack and its fixing screws.
If this cover is not properly fixed against the metallic chassis, check that the battery pack is completely inserted.
- Put the beautiful front/s cover back depending on the equipment, according to the described procedure in section 5.2.5.2..

natural_image
Line drawing of a server rack with ventilation fan and control panel (no text or symbols)5.2.5. Vertical -tower type- or rack models.
- All the UPSs from SLC TWIN RT series are designed to assemble the equipment as tower format -vertical position of the equipment- or rack -horizontal position- for its installation in 19" cabinets.
Follow the instructions stated in the sections related to any of both possibilities, attending the particular configuration of your equipment.
- Figures from 5 to 10 show as an example an equipment up to 3 kVA. These illustrations are only for help and orientation in the steps to follow and they are not particular for any model, because in practice, the actions to make are the same for all models up to 6 kVA.


natural_image
Line drawing of a server rack unit with ventilation grilles and drive bays (no text or labels visible)


Power rate models from 4 to 6 KVA. Power rate models from 8 to 10 KVA.
Fig. 4. Battery pack/s removing.
8 to 10 kVA models, the connection with battery modules for extended back up time, it is done through a connector located in the rear side of the equipment (see figure 11).
- All the instructions relating to connections will detailed later on, less those ones regarding the battery connection. Therefore, this section will only describe the works linked with the assembling.
5.2.5.1. Rotation of control panel with LCD.

Fig. 5. Rotation of control panel with LCD over the beautiful front plastic cover.
- To make easier the message reading when the equipment is vertically installed, it is advisable to rotate 90° clockwise the control panel with LCD (see figure 4).
- Also, it is advised to rotate the control panel, if any tower type equipment requires to be assembled as rack. Consider that the rotation of the control panel will be counter clockwise.
• Proceed as follows:
☐ Pull from the control panel with LCD out "A", to free the fixing clips and take it out.
Rotate it 90° on clockwise "B" and insert it again into the beautiful front cover till click it "C".
5.2.5.2. Taking out or putting the beautiful front cover.
- To take out the beautiful front cover, proceed as follows (see figure 6):
☐ Take out the control panel "A" (see section 5.2.5.1) and remove the fixing screw "B" of the beautiful front door located below the first one and put the own control panel back.
☐ Remove the two fixing screws "C" from beautiful plastic front cover.
☐ Move the front cover to "D" direction, by applying a hard and moderated knock on its side (side without screws), to free the trim entered into the metallic frame.
The front is free, but still joint to the equipment through the connection bus of the control panel.
- To put the beautiful front cover back, proceed in the reverse way to its removing.


Fig. 6. Taking out the beautiful front cover.
5.2.5.3. Vertical -tower type-assembling.
- Rotate the control panel according to section 5.2.5.1.
- In equipments up to 3 kVA, take the 4 plastic pieces "A" in angle shape supplied with the equipment and joint them two by two till obtain two supports or stabilizers "B".
• For equipments up to 3 kVA.
☐ Put the UPS vertical between the two stabilizers supports "B" (see figure 7).
For equipments of higher power.
☐ Put the equipment vertical and fix the two metallic supports, one at each side, by means of the supplied screws (models 4 to 6 KVA).
☐ For equipment of 8 to 10 kVA, put the equipment vertical. There are not supports or stabilizers.


natural_image
Line drawing of a rectangular electronic device with mounting brackets and a control panel (no text or symbols)Fig. 7. Vertical -tower type- assembling.
5.2.5.4. Vertical -tower type- assembling, with extended back up time (battery module).
- The description of this section is based on an equipment with only one battery module (see figure 8). For a higher quantity of modules proceed to the connection among them.
- Rotate the control panel of the equipment according to section 5.2.5.1.
- In equipments up to kVA, take the 4 plastic pieces "A" with angle shape and supplied with the UPS and the two supplied with the battery module "B", and joint them till obtain two supports or stabilizers "C" to hold the equipment and battery module.
• For equipments up to 3 kVA.
☐ Put the UPS and battery module on vertical position between the stabilizers supports "C".
☐ Fix the "D" metallic piece that joint UPS and battery module by means of the supplied screws "E".
For equipments of higher power.
☐ Put the equipment and battery module in vertical position and together. Next fix the two metallic supports by means of the supplied screws, one on the side of the equipment and other one on the side of the battery module, in the UPS 4 to 6 kVA.
☐ For equipment of 8 to 10 kVA, put the equipment vertical. There are not supports or stabilizers.
☐ Fix the joint metallic piece between the UPS and battery module by means of the supplied screws.



natural_image
Technical line drawing of a server rack unit with ventilation grilles and mounting brackets (no text or symbols)
Fig. 8. Model in vertical -tower type- assembling with extended back up time (battery module).
- Regarding the connections of the UPS with the battery module in models up to 6 kVA, make the following steps, but reading section 5.3.4 previously:
☐ Connect the supplied earth joint cable "F", between the UPS and battery module.
☐ Remove the beautiful front cover of the equipment and battery module, as it is described in section 5.2.5.2.
☐ Take the extensible cable with connector "H" of the battery module and connect it with the "G" connector of the equipment.
To connect it with other battery modules, there is the "J" connector. Take the extensible cable with "H" connector of the beside battery module and connect it to the "J" con-
nector of the previous one. Repeat the same steps for a high quantity of modules.
☐ In the side of each front cover, there are the "K" trims as hole to go the cables through it with the battery modules. Break the needed trims to pass the connection bus.
☐ Put the beautiful front cover back of the equipment and battery module, as it is stated in section 5.2.5.2.
- For 8 and 10 kVA UPSs with the battery module, proceed as follows, but reading section 5.3.4 previously (see figure 11):
☐ Connect the supplied earth joint cable, between the UPS and battery module.
☐ To connect the battery module with the equipment, there is a connector on the rear side of both units. Insert the aerial connector from battery module into the connector of the equipment.
☐ Battery module has base connector, foreseen to connect the aerial connector from another module.
5.2.5.5. 19" rack cabinet mounting.
- All models can be installed in a 19" rack cabinet, attending the height of each model:
☐ Models up to 3 kVA, 2 units height.
☐ Models from 4 and 6 kVA,3 units height.
☐ Models of 8 and 10 kVA, 5 units height.


natural_image
Technical line drawing of a server rack unit with rack-mounted racks and a monitor, labeled "B" (no text or symbols on the device itself)Fig. 9. 19" rack cabinet assembling.
• To do it proceed as follows (see figure 9):
☐ Fix both adaptor angles "A" of the equipment as rack, to its side by means of the supplied screws.
☐ Put a UPS in a rack cabinet, it is needed to have the side internal as support mode "C". In lack of them and under request, a rails can be supplied as a guide, to be installed by the end user. Make the assembling at the required height, assuring the correct torque of the fixing screws.
☐ Face the equipment over the rails and enter it to the bottom. Depending on the model of the equipment and as a result of the weight, it is recommended to make the installation works by two persons, and even more when they are done on the top and bottom of the cabinet.
☐ Fix the equipment to the frame of the cabinet by means of the screws "B".
5.2.5.6. 19" rack cabinet assembling, with extended back up time (battery module).
- This section describes a single equipment with only one battery module (see figure 10). For higher quantity of modules reproduce the connection procedure among them.
- All models can be installed in a 19" rack cabinet, keeping in mind the height of each model:
☐ Models up to 3 kVA, height of 2 units.
☐ Battery module for models up to 3 kVA, height of 2 units.
☐ Models from 4 to 6 kVA, height of 3 units.
☐ Models of 8 and 10 kVA, height of 5 units.
☐ Battery module for models from 4 to 10 kVA, height of 3 units.
• To do this, proceed as follows:
☐ Fix both adaptor angles "A" to the equipment and to the battery module as rack, on their side, by means of the supplied screws.
☐ Put a UPS in a rack cabinet, it is needed to have the side internal as support mode "C". In lack of them and under request, a universal rails can be supplied as a guide, to be installed by the end user. Make the assembling at the required height, assuring the correct torque of the fixing screws.
☐ Face the equipment over the rails and enter it to the bottom. Proceed in the same way for the battery module.
Depending on the weight of model of the equipment and battery module, it is recommended to make the installation works by two persons.
☐ Fix the equipment to the frame of the cabinet by means of the screws "B".
- Regarding the connections of the UPS with the battery module in models up to 6 kVA, make the following steps, but reading section 5.3.4 previously:
☐ Connect the supplied earth joint cable "F", between the UPS and battery module.
☐ Remove the beautiful front cover of the equipment and battery module, as it is described in section 5.2.5.2.
☐ Take the extensible cable with connector "H" of the battery module and connect it with the "G" connector of the equipment.
To connect it with other battery modules, there is the "J" connector. Take the extensible cable with "H" connector of the beside battery module and connect it to the "J" connector of the previous one. Repeat the same steps for a high quantity of modules.



Fig. 10. 19" rack cabinet assembling, with extended back up time (battery module).
☐ In the side of each front cover, there are the "K" trims as hole to go the cables through it with the battery modules. Break the needed trims to pass the connection bus.
☐ Put the beautiful front cover back of the equipment and battery module, as it is stated in section 5.2.5.2.
- Regarding the connections of the UPS with the battery module in models of 8 and 10 kVA, make the following steps, but reading section 5.3.4 previously (see figure 11):
☐ Connect the supplied earth joint cable, between the UPS and battery module.
☐ To connect the battery module with the equipment, there is a connector on the rear side of both units. Insert the aerial connector from battery module into the connector of the equipment.
☐ Battery module has base connector, foreseen to connect the aerial connector from another module.

Base connector to connect it with another battery module
Fig. 11. Battery module connection for 8 and 10 kVA equipments.
5.3. Connection.
- Cross cable section used in the power supply of the equipment and loads to feed, will be sized according to the nominal current stated in the nameplate sticked on the equipment, by respecting the Low Voltage Electrotechnical Regulations or norms of the corresponding country.
- Installation will have the suitable input protections sized to the current of the equipment and stated in the nameplate of the equipment (residual current devices type B and circuit breaker with C characteristic or any other equivalent one).
Overload conditions are considered as a nonpermanent an exceptional operating mode, so these currents will not be kept in mind when sizing the protections. - Output protection will be done with a circuit breaker of C characteristic or any other equivalent one.
- The equipments can be installed and used by personnel with not specific training, just with only help of this «Manual», less those ones with power blocks have to be installed by qualified personnel.
- In the hardwired models, is needed to remove the fixing screws of the protection cover and the own cover, to proceed to the parallel connection.
Also the equipments from 4 to 10 kVA have cable glands in the own cover, through them the cables can be conducted and fixed.
When finalising the corresponding tasks, the cover will be installed and its fixing screws again.
- To insert the option cards, it is needed to remove the fixing screws of the smart slot and the own cover.
When finalising the corresponding tasks, the cover will be installed and its fixing screws again. - It is recommended to use terminals in all the cable ends, which are connected to the power blocks, specially in the power ones (input, output and bypass).
- Check the correct torque in the screws of the power blocks.
5.3.1. Connection of input.
- As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth(⊥)). Connect the conductor to the terminal, before connecting the power supply to the input power block.
• Equipments with IEC outlets (models from 0,7 to 2 kVA):
☐ Take the power cord with schuko plug and IEC connector.
☐ Connect the IEC connector to the UPS inlet.
☐ Insert the schuko plug to the AC mains outlet.
• In equipments with power blocks (3 kVA B1 models).
Connect the power supply cables to input power blocks R (L), and N, by respecting the phase and neutral rotation stated in the labelling of the equipment and in this manual. If this rotation is not respected, serious faults could happen.
The main earth input protection is located between the phase and neutral terminal. Pay special attention to the correct connection.
When discrepancies exist between the labelling and the instructions of this manual, the labelling will always prevail.
• For hardwired equipments (models from 4 to 10 kVA).
These equipments have separate power blocks for the static bypass line. For installations with only one power supply, place a cable as a bridge mode "Jumper" between the terminals JP and L (bypass phase line).
Do not fit this "Jumper" bridge, if the equipment is a frequency converter (see figure 13).
In accordance with safety standard EN-IEC 62040-1, the installation has to be provided with an automatic «Backfeed protection» system, as for example a contactor, which will prevent the appearance of voltage or dangerous energy at the input line during a mains fault (see figure 12 and respect the circuit diagram of the particular «Backfeed protection» for the equipment without bypass line).
There can be no derivation in the line that goes from the «Backfeed protection» to the UPS, as the safety standard would be infringed.
It is not needed to install the «Backfeed protection», in case the equipment is a frequency converter, because the own operating principle of the equipment disables the possibility of having bypass line.
☐ Warning labels should be placed on all primary power switches installed in places away from the device to alert the electrical maintenance personnel of the presence of a UPS in the circuit be infringed.
The label will have the following text or an equivalent one:
Before working on this circuit.
• Isolate Uninterruptible Power System (UPS).
- Then check for Hazardous Voltage between all terminals including the protective earth.

Risk of Voltage Backfeed from UPS.
☐ Connect the power supply cables to input power blocks R (L), and N, by respecting the phase and neutral rotation stated in the labelling of the equipment and in this manual (see figure 13). If this rotation is not respected, serious faults could happen. When discrepancies exist between the labelling and the instructions of this manual, the labelling will always prevail.
In parallel systems, the length and cross section of the cables that go from the switchgear panel till one of the UPSs and vice versa, will be the same for all of them without any exception.
5.3.2. Connection of the static bypass power blocks (> 3 kVA models power rate only).
- These equipments have separate power blocks for the static bypass line. For installations with two power supplies, the cable as a bridge mode "Jumper" between the terminals JP and L (bypass phase line) are not to place, otherwise a short-circuit can be made when turning on the protection of both lines.
- As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth(⊥)). Connect the conductor to the terminal, before connecting the power supply to the input power block.

flowchart
graph TD
A["Cable as bridge mode "Jumper""] --> B["JP R (L)"]
B --> C["Input"]
C --> D["Output U (L)"]
C --> E["UPS"]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style C fill:#cfc,stroke:#333
style D fill:#fcc,stroke:#333
style E fill:#cff,stroke:#333
«Backfeed protection» connection for TWIN RT > 3 kVA with no static bypass line (Jumper fitted in.
- In accordance with safety standard EN-IEC 62040-1, the installation has to be provided with a «Backfeed protection» system, as for example a contactor, which will prevent the appearance of voltage or dangerous energy at the bypass line during a mains fault (see figure 12 and respect the circuit diagram of the particular «Backfeed protection» for the equipment with bypass line.
There can be no derivation in the line that goes from the «Backfeed protection» to the UPS, as the safety standard would be infringed.
- Warning labels should be placed on all primary power switches installed in places away from the device to alert the electrical maintenance personnel of the presence of a UPS in the circuit.
The label will have the following text or an equivalent one:
Before working on this circuit.
• Isolate Uninterruptible Power System (UPS).
- Then check for Hazardous Voltage between all terminals including the protective earth.

Risk of Voltage Backfeed from UPS.
- Connect the power supply cables to input power blocks R (L), and N, by respecting the phase and neutral rotation stated in the labelling of the equipment and in this manual (see figure 13). If this rotation is not respected, serious faults could happen.
When discrepancies exist between the labelling and the instructions of this manual, the labelling will always prevail.
- In parallel systems, the length and cross section of the cables that go from the switchgear panel till one of the UPSs and vice versa, will be the same for all of them without any exception.
- In equipments with separate bypass line, a galvanic isolation transformer has to be installed in any of the two lines that supply the UPS (rectifier input or static bypass), to avoid the direct union of the neutral of both lines through the internal wiring of the equipment.

flowchart
graph TD
A["R (L)"] --> B["(1)"]
C["N"] --> D["(2)"]
E["R (L)"] --> F["(3)"]
G["N"] --> H["Input Bypass"]
I["U (L)"] --> J["Output"]
K["N"] --> L["UPS"]
style A fill:#fff,stroke:#000
style C fill:#fff,stroke:#000
style E fill:#fff,stroke:#000
style G fill:#fff,stroke:#000
style I fill:#fff,stroke:#000
style K fill:#fff,stroke:#000
style L fill:#fff,stroke:#000
«Backfeed protection» connection for TWIN RT > 3 kVA with static bypass line (no Jumper).
(1) Automatic «Backfeed protection» protection system, external to the UPS (EN-IEC 62040-1).
(2) Fuse holder and fuse for general purpose of 250V AC / 3A type F.
(3) Two poles contactor of 230V AC with a minimum distance between contact of 1,4 mm and coil of the same voltage, with the minimum current stated in the nameplate of the UPS (input or bypass according to).
For parallel systems, each equipment must have its own "Backfeed protection" completely independent.
Fig. 12. Wiring diagram for "Backfeed protection".
This is applicable when the two lines are supplied from different mains, i.e.:
☐ Two different electrical companies.
☐ An electrical company and genset, ...

UPS TWIN RT > 3 kVA with no bypass line.

SAI TWIN RT > 3 kVA with bypass line.

Frequency converter TWIN RT > 3 kVA.
Fig. 13. Power block connection depending on the equipment.
5.3.3. Connection of the IEC outlets and output power blocks.
As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth(⊥)). Connect the conductor to the terminal, before connecting the power supply to the input power block.
- All the equipments have female IEC outlets, in greater or lesser numbers depending on the power rate of the equipment:
☐ Models up to 2 kVA: 2 groups of 4 IEC outlets of 10A labelled as LS1 and LS2, which can be set through the control panel and/or Win Power.
Models of 3 kVA: 2 groups of 4 IEC outlets of 10A labelled as LS1 and LS2, which can be set through the control panel and/or Win Power, plus a IEC connector of 16A.
☐ Models from 4 to 6 kVA: 2 groups based on 2 IEC outlets of 10A and 1 of 16A each one.
Each group has an automatic protection switch. In case of tripping, the load connected to the respective outlet has to be checked, otherwise the protection will be activated and deactivated cyclically, and therefore the loads will suffer the consequences.
☐ Models of 8 and 10 kVA: 4 groups based on 2 IEC outlets of 16A each one.
Each group has an automatic protection switch. In case of tripping, the load connected to the respective outlet has to be checked, otherwise the protection will be activated and deactivated cyclically, and therefore the loads will suffer the consequences.
• For hardwired equipments (models from 4 to 10 kVA).
☐ Connect the loads to output power block U (L) and N, by respecting the phase and neutral rotation stated in the labelling of the equipment and this manual (see figure 13). When discrepancies exist between the labelling and the instructions of this manual, the labelling will always prevail.
☐ Loads can be connected to the IEC outlets, to the output power blocks or to both at the same time, meanwhile the features of the equipment and IEC outlets limitations are not exceeded, otherwise there will be sudden blackouts in the power supply of the connected loads at the output.
- If besides of the critical loads, it is required to connect lagging loads of high consumption, like laser printers or CRT monitors, the inrush currents of these peripherals will be kept in mind in order to avoid blocking the equipment under the worst conditions.
It is better to not connect the loads of this kind, due to the high quantity of energy resources that take from the UPS.
- In parallel systems, the length and cross section of the cables that go from the switchgear panel till one of the UPSs and vice versa, will be the same for all of them without any exception.
- With respect to the protection that must be placed at the output of the UPS, we recommend that the output power should be distributed in at least four lines. Each one should have a circuit breaker protection switch of a value of one quarter of the nominal power. This type of power distribution will allow that in the event of a breakdown in any of the machines connected to the device causing a short-circuit, it will affect to no more than the line that is faulty.
The rest of the connected loads will have their continuity assured due to the triggering of the protection, because the line affected by the short-circuit will trip its protection.
5.3.4. Connection of the external batteries (extended back up time).
- As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth(⊥)). Connect the conductor to the terminal, before connecting the power supply to the input power block.
- To not respect the safety instructions (see document EK266*08) means a high risk of electrical discharge and even the death.
-
To connect the batteries with the equipment, follow the described steps in sections 5.2.5.4 and 5.2.5.6.
-
All the standard UPSs have batteries in the same enclosure, less the B0 and B1. Battery protection is done by internal fuses and not accessible for the end-user. Battery modules have internal protections for the batteries too and they are not accessible for the end-user.
- IMPORTANT FOR SAFETY: In case of installing the batteries by yourself, the accumulators has to be provided with a two pole circuit breaker protection sized to the features stated in table 3.
| Model | Batteries (Uelement × N2) = Unominat / Ufloating | Minimum features of fast type | |
| Voltage DC (V) | Current (A) | ||
| SLC-700-TWIN RT | (12 V x 3 ) = 36 V / 41,25 V | 125 | 32 |
| SLC-1000-TWIN RT 40 | |||
| SLC-1500-TWIN RT | (12 V x 4 ) = 48 V / 55 V | 50 | |
| SLC-2000-TWIN RT 60 | |||
| SLC-3000-TWIN RT | (12 V x 6 ) = 72 V / 82,5 V | 60 | |
| SLC-4000-TWIN RT | (12 V x 15 ) = 180 V / 206,25 V | 250 | 32 |
| SLC-5000-TWIN RT 40 | |||
| SLC-6000-TWIN RT 50 | |||
| SLC-8000-TWIN RT | (12 V x 20 ) = 240 V / 275 V | 440 | 50 |
| SLC-10000-TWIN RT 60 | |||
Tabla 3. Specifications of the protection between the equipment and battery module.
- Before starting the connection between the battery module/s and the equipment, check that the equipment switch/es and the one in the battery cabinet are in "Off" position. Likewise when batteries are installed by own self, the fuse or switch has to be turned off.
- Connection terminals of external batteries with the equipment are done with a polarised Anderson connector.
- For battery connection with the equipment, follow the stated steps in sections 5.2.5.4 and 5.2.5.6, keeping in mind the model.
- In parallel systems (4 to 10 kVA models only), the connection of the external battery modules with each equipment has to be treated as single and separate units.
- Each battery module is independent for each equipment. It is completely forbidden to connect to equipments to the same battery module.
5.3.5. Connection of main input earth terminal ( 12 and the earth bonding terminal ( 12 )
- As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth(⊥)). Connect the conductor to the terminal, before connecting the power supply to the input power block.
- Make sure that all the loads connected to the UPS are only connected to the protective earth bonding terminal ( ). The fact of not restricting the earthing of the load or loads and/or the batteries case/s or cabinet/s to this single point will create a return loops to earth which will affect the quality of the supplied power.
- All terminals identified as earth bonding ( 12 ), are joined together, to the main protective earthing terminal ( 12 ) and to the frame of the device.
5.3.6. Terminals for EPO (Emergency Power Off).
- All UPSs have two terminal to install an external button, for Emergency Power Off (EPO). Nevertheless, depending on the power rate of the equipment, it is supplied a four pins connector with the remote shutdown ON-OFF (models from 0,7 to 3 kVA) or a single connector and individual of two pins (models from 4 to 10 kVA).
As an illustration mode, figures A and B, it is shown a connector of two pins. - By default, the equipment is supplied from factory with the EPO circuit as closed (NC). So, the UPS will break the output power supply, emergency power off, when opening the circuit:
☐ Either by removing the female connector inserted in the plinth. This connector has a cable bridge to close the circuit (Fig. A).

Fig. A

Fig. B
☐ Or by turning on the external button installed and belonging to the end-user. The connection in the button has to be in normally closed because it will open the circuit when turning it on.
- Through the control panel, it can be selected the reverse functionality (Password required), normally open (NO).
Less punctual cases, it is not recommended to use this type of connection due to the function of the EPO button, because it would not work in case of any of the two cables that goes from the button to the UPS were cut (damaged).
On the other hand this failure would be immediately detected in the normally closed EPO type, with the inconvenience of the sudden break in the power supply to the loads, but with a complete guarantee of the functioning of the emergency power off.
- To restore the normal operating mode of the UPS, the connector with the cable bridge has to be fitted back in the terminal strip or to deactivate the EPO button and later on to cancel the EPO status in the control panel. The equipment will be operative.
5.3.7. "Dry\_in" terminals, remote ON-OFF (0,7 to 3 kVA equipments only).
- The equipments from 0,7 to 3 kVA have a 4 pins connector, two for the EPO (see the description in the previous section) and two for remote start up or shutdown "Dry_in".
- Through these terminals, an external button can be connected, with the same function that the own in the UPS.
- When pressing, over it for 1 second, the circuit will activate the opposite order of the current status of the inverter, so, if it is shutdown then it will be started up and vice versa, if the inverter is started up then it will be shutdown (see figure 14).

External button, normally open. It is activated with an order of 1 second pulsation.
Fig. 14. Button installation in the "Dry_in" terminals.
5.3.8. "Dry\_out" terminals, dry contact for alarm (0,7 to 3 kVA equipments only).
- The equipments from 0,7 to 3 kVA are supplied with a normally open dry contact "Dry_out", which is closed when activating of any on or more associated alarms "Summary Alarm" from Table 4.
- Do not apply more than 30V AC 1A or 60V DC 2A. Dry contact, do not connect both phases between the contacts, because there would be a short-circuit when triggering the alarm because the circuit is closed.

Dry contact, do not apply voltage between them.
Fig. 15. Dry contact "Dry_out".
| BUS Over Voltage Inv Under Voltage | |
| BUS Under Voltage Inv Softstart Fail | |
| BUS Unbalance Output Overload | |
| BUS Short Inv Overload Fault | |
| BUS Softstart Fail Byp Overload Fault | |
| Output Short Circuit Heatsink Over temperature | |
| Inv Over Voltage - | |
Table 4. Associated alarms to "Summary alarm" for Dry_out contact.
5.3.9. Connection in parallel.
5.3.9.1. Introduction to the redundancy.
N+1 is usually the most reliable power structure. N means the minimum quantity of equipments that the total load needs, so 1, and 1 means the quantity of redundant equipments, so it means, the quantity of faulty UPSs that the system can allow at the same time.
TWIN RT series allows two equipment connected in parallel only, for those models with power rate between 4 and 10 kVA, in order to set a shared output and redundant in power.
5.3.9.2. Installation and parallel operating (4 to 10 kVA equipments only).
- Communication line (COM) is a very low voltage circuit of safety. To preserve the quality, it has to be installed
separate from other lines that have dangerous voltages (energy distribution line).
- Parallel connection bus. Use the bundle with 15 signal cables with mesh and DB15 connectors in the ends to joint up to 2 equipments as maximum. Each bundle has a male and female connector in the ends, which will have to be connected to joint both equipments. It is essential to close the loop of the parallel bus.
The length of the parallel cable has 3 metres and it can't be extended under any other concept due to the risk of interferences and communication failures that it could cause.
- The installation of the parallel systems, has to be provided by a switchgear panel with individual protections for input, output and static bypass (this last one, in those installations that uses the second line only), also a manual bypass with mechanical lock, see figures 16 and 17.
This switchgear panel allows isolating only one equipment from the system, against any failure and feed the loads with the rest of equipments during the preventive maintenance or its fixing. In the same way, it allows removing an equipment in parallel and replace it or put it in parallel again once it is fixed, but without breaking the power supply to the loads meanwhile the connected power can be supported by the operative equipment.
Under request a manual bypass panel can be supplied for a single equipment or a system of two equipments in parallel.
- Respect the connection procedure for input and bypass described in the previous sections of this chapter.
- Respect the established procedure to make the connection of the battery modules for those equipments with extended back up time, which has been described in the previous sections of this chapter.
- Respect the established procedure to make the connection of the output (loads), which has been described in the previous sections of this chapter.
- Respect the established procedure to make the connection of the output and batteries of the equipment, which has been described in the previous sections of this chapter.
- In parallel systems, the length and cross section of the cables that go from the switchgear panel till one of the UPSs and vice versa, will be the same for all of them without any exception.
In the worst case, the following deviations have to be strictly respected:
☐ When the distance among the UPSs and protection panel is lower than 20 metres, the difference in the length between the input and output cables of the equipments has to be lower than 20%.
☐ When the distance among the UPSs and the protection panel is higher than 20 metres, the difference in the length between the input and output cables of the equipments has to be lower than 10%.

flowchart
graph TD
A["Input"] --> B["Input circuit breakers"]
B --> C["UPS nr 1"]
B --> D["UPS nr 2"]
C --> E["Manual bypass"]
D --> E
E --> F["Output circuit breakers"]
F --> G["To loads"]
G --> H["..."]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style C fill:#cfc,stroke:#333
style D fill:#cfc,stroke:#333
style E fill:#fcc,stroke:#333
style F fill:#cff,stroke:#333
style G fill:#ffc,stroke:#333
Fig. 16. Parallel installation of two TWIN RT UPSs from 4 to 10 kVA, with protection and manual bypass panel.

flowchart
graph TD
A["Input"] --> B["Input and bypass circuit breakers"]
C["Bypass line"] --> B
B --> D["UPS nr 1"]
B --> E["UPS nr 2"]
D --> F["Manual Bypass"]
E --> F
F --> G["Output circuit breakers"]
G --> H["To loads"]
Fig. 17. Parallel installation of two TWIN RT UPSs from 4 to 10 kVA, with bypass line and protection and manual bypass panel.
5.3.10. Communication ports.
5.3.10.1. RS232 and USB interfaces.
- Communication line (COM) is a very low voltage circuit of safety. To preserve the quality, it has to be installed separate from other lines that have dangerous voltages (energy distribution line).
- RS232 and USB interfaces are used by the monitoring software and firmware updating.
• It is not possible to use both ports at the same time. - Signal pin-out of the DB9 connector are shown in table 5. RS232 port consists in a serial data transmission, so an important quantity of information can be sent through a communication cable of 3 wires.
• Physical structure of RS-232.
☐ Pin 2. RXD. Serial data reception.
☐ Pin 3. TXD. Serial data transmission.
☐ Pin 5. GND. Ground of the signal.
| Pin # Description Input / Output | ||
| 2 TXD Output | ||
| 3 RXD | Input | |
| 5 | GND | Input |
Tabla 5. Pin-out of the RS232 in the DB9 connector.
- USB communication port is compatible with the USB 1.1 protocol for communication software.
5.3.10.2 Smart slot.
- UPSs have a unique slot, hidden rear the cover stated in the views of the equipment as "Smart slot", and allows inserting any of the following options cards:
☐ SNMP for control via Web.
☐ Remote UPS management through Internet or Intranet.
☐ Relays interface (for more details see the next section).
- For more information, contact with our S.T.S or our nearest distributor.
5.3.10.3. Relays interface (option).
- Communication line (COM) is a very low voltage circuit of safety. To preserve the quality, it has to be installed separate from other lines that have dangerous voltages (energy distribution line).
- UPS has a dry contact card for the relays interface communication protocol, it provides digital signals in a free potential way, with a maximum applicable voltage and current of 240 V ac or 30 V dc and 1A.
- This communication port makes possible the dialogue between the equipment and other machines or devices, through the 5 dry contacts supplied in the terminal strip included in the same card and to each one of them an alarm of the 8 available can be assigned (see table 6).
Also there are other three additional terminals with only one common, for an installation of an external On/Off switch to the UPS and a third one with free setting among EPO, Shutdown or "On-Off" remote control.
From factory all contacts are normally opened, being able to set them separately one by one, by means of the Hyper Terminal software or equivalent.
- The most common use of this type of ports is to provide the needed information for the closing file software.
- This card has a RS232 port through a RJ connector. So, in case of requiring a DB9 connector, use the adaptor RJ / DB9 supplied with the relays interface card.
- For more information, contact with our S.T.S or our nearest distributor.

Fig. 18. Relays interface dry contact pin-out.
Installation.
- Remove the protection cover from the slot of the equipment.
• Take the relays interface card and insert it into the smart slot. Make sure that it is well connected, so the resistance that the own connector inside the slot makes has to be overcome.
• Make the needed connections in the alarm terminal strip. - Put the new protection cover that it is supplied with the relays interface card and fix it through the same screws that fixed the original cover.
| Description Nr pin Input/output | ||
| Mains fault Programmable Output | ||
| Low battery | Programmable Output | |
| General alarm | Programmable Output | |
| Bypass status | Programmable Output | |
| Summary alarm | Programmable Output | |
| Battery test | Programmable Output | |
| Shutdown in process | Programmable | Output |
| Overload alarm | Programmable Output | |
| UPS signal "On" | 1 (GND) - 14 | Input |
| UPS signal "Off" | 1 (GND) - 7 | Input |
| Programmable signal as:- EPO- Shutdown on battery mode- Shutdown on any mode- Remote control "On-Off" | 1 (GND) - 8 | Input |
| UPS "On" | Programmable | Output |
Tabla 6. Relays interface alarms.
5.3.11. Software.
• Free software download - WinPower.
- WinPower is a UPS monitoring software, which makes a user-friendly interface of monitoring and management. This software supplies an auto Shutdown for a system based on several PCs in case of an electrical blackout. With this software, the end-users can monitor and manage any UPS in the same IT network, through the RS232 or USB communication port, never mind the distance between them.
• Installation procedure:
☐ Go to website:
http://support.salicru.com
☐ Choose the operating platform that you need and follow the instructions described in the web site to download the software.
☐ When downloading the needed files from Internet, enter the following licence to install the software: 511C1-01220-0100-478DF2A.
- When the computer is rebooted, WinPower software will be shown as an icon with plug shape and green colour in the system tray, near the clock.

flowchart
graph TD
A["UPS Status"] --> B["Voltage 200 V"]
A --> C["Frequency 60.0 Hz"]
A --> D["Max Volt 200 V"]
A --> E["Max Volt 216 V"]
F["BYPASS"] --> G["On Battery 90.00V"]
G --> H["UPS"]
H --> I["BATTERY 100A"]
I --> J["AC LINE"]
I --> K["LOAD 100A"]
L["Model"] --> M["ON-LINE"]
N["Com/Port"] --> O["COM/L"]
P["Temp"] --> Q["25.0 °C"]
R["Voltage 40.1 V"] --> S["Standard 36.0 V"]
T["Capacity 100.0 %"] --> U["Capacity 100.0 %"]
Fig. 19. Main screen of the monitoring software.
5.3.12. Considerations before starting up the connected loads.
- It is recommended to charge the batteries for 12 hours as minimum before using the UPS for first time. When supplying voltage to the equipment, the battery charger will automatically work.
(B1) equipments with extended back up time has a battery charger with higher quality performances. It is recommended to charge the batteries for 12 hours as minimum before using the UPS for first time. - Nevertheless, those equipments with extended back up time and with no additional battery charger, it's recommended to charge the batteries of each battery module for 12 hours.
- Although the equipment can work without charging the batteries during the stated time without any problem, the risk of a long blackout has to be valued during the first operating hours and the available autonomy time in the UPS.
- Do not start up the equipment and loads completely till chapter 6 states it.
Nevertheless, when it is done, it will be done gradually to avoid any problem, as minimum in the first commissioning.
- If inductive loads with big inrush current apart from sensitive ones are required to be connected like laser printers or CRT monitors, keep in mind the start inrush currents of these peripherals in order to avoid that the equipment becomes blocked under the worst conditions.
It is better to not connect the loads of this kind, due to the high quantity of energy resources that take from the UPS.
6. Operating.
6.1. Commissioning.
6.1.1. Controls before commissioning.
- Check that the EPO connector with the cable (Fig.A), is inserted into plinth located in the rear side of the equipment.
- Make sure that all the connections have been made properly and are sufficiently tight, respecting the labelling of the equipment and the instructions of chapter 5.
- Check that the UPS is turned Off (shutdown).
- Be sure that all the loads are turned «Off».
Turn off the connected loads before starting up the UPS, and start up the loads one by one, when the UPS is started up only. Before shutdown the UPS, check all the loads are out of service (Off).
• It is very important to proceed in the established order.
• For UPS view, see figures 1 to 3.
- Figures 16 and 17 shows a manual bypass panel for a parallel system, in a conceptual way (4 to 10kVA models only), valid for a single equipment by adapting the quantity of switches.
6.2. UPS start up and shutdown.
6.21. Start up and shutdown of the UPS.
- Check that the power supply connection is correct.
- Press over the start up key (for more than 3 seconds, the acoustic alarm will beep for 1 sec. and the UPS will start up.
- After a few seconds, the UPS establishes on "Normal mode". If the mains voltage is wrong, the UPS will transfer to "Battery mode", without breaking the feeding at the output power blocks.
Fan/s depending on the model, will be started up and the LCD panel will show the "SALICRU" brand logo.
After the initial test of the equipment, it is displayed the main screen.
- Start up the load/s, do not overload the equipment.
6.2.2. Start up of the UPS, without mains.
- Press over the start up key (for more than 3 seconds, the acoustic alarm will beep for 1 sec. and the UPS will start up. Fan/s depending on the model, will be started up and the LCD panel will show the "SALICRU" brand logo.
After the initial test of the equipment, it is displayed the main screen.
- After a few seconds, the UPS establishes on "Battery mode". If the mains is restored, the UPS will transfer to "Normal mode", without breaking the feeding at the output power blocks.
- Start up the load/s, do not overload the equipment.
6.2.3. UPS shutdown, with mains present.
- Shutdown the load/s.
- Press over the start up key (for more than 3 seconds to shutdown the inverter. The acoustic alarm will beep for 3 sec. The equipment will be established on "Bypass mode.
- When finishing the previous action, there is still voltage at the UPS output.
To break the power supply at the UPS output, turn "Off" the circuit breakers of the UPS switchgear panel.
After a few seconds the LCD screen is shutdown and the equipment will be out of service completely.
6.2.4. UPS shutdown, without mains.
- Shutdown the load/s. - Press over the start up key for more than 3 seconds to shutdown the inverter. The acoustic alarm will beep for 3 sec. The equipment will leave the output power blocks without voltage.
After a few seconds the LCD screen is shutdown and the equipment will be out of service completely.
6.3. Operative for a parallel system (4 to 10 kVA models only).
- The following operative, it is considered for equipments with the configuration preset from factory.
- Check that the load/s and output circuit breakers switches from protection panel, are in "Off" position.
- Turn "On" the input circuit breaker switches from protection panel.
- In equipments with separate static bypass line, turn "On" the bypass circuit breakers from protection panel.
UPSs supply output voltage through the bypass. Check the LCD from control panel, in case there was any warning or error information. Check the output voltage at the power blocks of each UPS separately, in order to check the voltage difference is below 1V among them. If the difference is higher than 1 V, double check the wiring and associated instructions.
- Press over the start up key (for more than 3 seconds, the acoustic alarm will beep for 1 sec. and the UPS will start up. All UPSs will transfer to "Normal model".
Measure the output voltage on each UPS separately, to check the voltage difference is under 0.5 V. In case the difference were higher than 1 V, the UPSs have to be set (contact with the S.T.S.).
- Press over the start up key ⏻ for more than 3 seconds in any UPS and all of them will be shutdown, at the output will be voltage supplied through the bypass.
Turn “On” the output circuit breaker switches from the distribution panel and the complete parallel system will supply output voltage through the bypass.
- Press over the start up key (for more than 3 sec. in any of the UPSs and all of them will start up, finally the parallel system will be working on "Normal mode"
- Start up the load/s.
6.4. How to replace a faulty UPS in a parallel system.
☐ Press over the key ⏻ in any UPS for more than 3 seconds to shutdown all the inverters. The acoustic alarm will beep for 3 seconds. The equipments that belong to the current parallel system will transfer to "Bypass mode".
☐ Put all the equipments on manual bypass. To do it remove the cover from manual bypass switch, which is located at the back of each equipment and turn all the switches to position "BYPASS".
Keep in mind that on "Bypass mode" or with the switch on position "BYPASS", the loads will be exposed to fluctuations of voltage, frequency and mains faults or blackouts, so in case it were possible choose one day with the lowest probability of faults (days without fluctuations, days without storms,... ) and do it as fast as possible.
☐ Turn "Off" the input, output and bypass circuit breaker protections (this last one when it is available) from the protection panel and corresponding to the equipment to replace.
☐ Disconnect the communication bus and all power connections, and remove it. In equipments installed as rack, remove the screws that fix it to the cabinet previously.
☐ Put the manual bypass switch of the new UPS, to position "BYPASS". To do it remove the protection cover of the manual bypass located in the rear side and act over itself.
☐ Put the new equipment that replaces the faulty one and reconnect it. Follow the instructions stated in section 5.3.9.2, to connect them in parallel.
For equipments installed as rack, put the screws that fix it to the cabinet previously.
- Turn "On" the input and bypass circuit breakers (this last one, if it is available) from protection panel, and corresponding to the new UPS.
UPSs supply output voltage from bypass. Check the LCD screen from control panel in case there were any warning or error information.
Measure the output voltage of the new UPS, check the voltage difference is below 1 V. In case the difference were higher than 1 V, double check the wiring and associated instructions.
- Put back the cover of the manual bypass of each UPS.
- Press over the start up key ⏻ for more than 3 sec. in any of the UPSs and all of them will start up. All UPSs will transfer to "Normal mode".
Measure the output voltage in the power blocks of the parallel system and the output terminals of the new UPS, to check the voltage difference is under 0.5 V. In case the difference were higher than 1 V, the UPSs have to be set (contact with the S.T.S.).
- Press over the shutdown key in any UPS for more than 3 seconds and each one will be shutdown, supplying output voltage through the bypass.
Turn "On" the output circuit breaker switch of the distribution panel, corresponding to the new integrated equipment. The complete parallel system will supply output voltage, through the bypass.
- Remove the cover of the manual bypass in each UPS.
-
Transfer the equipments with the manual bypass ("BYPASS" position) to position "UPS". Do it in the switches of all equipments.
-
Put back the protection cover of the manual bypass switch of all equipments, also check the torque of the fixing screws, otherwise any of the limit contacts of this cover could be activated and the manual bypass too.
- Press over the start up key for more than 3 sec. in any of the UPSs and all of them will start up, finally the parallel system will be working on "Normal mode".
Load/s are running and protected by the parallel system again.
6.5. Manual Bypass Switch (maintenance).
6.5.1. Operating principle.
Integrated manual bypass in all UPS from SLC TWIN RT from 4 to 10kVA is very useful, but a wrong use can cause irreversible consequences for both the UPS and connected loads at its output. Therefore, it is important to respect the manoeuvring over the switch as it is stated in the following sections.
6.5.2. Transference to maintenance bypass.
- The procedure to transfer from normal mode to maintenance bypass is the same for a single equipment or a parallel system, less the quantity of actions:
☐ For a single equipment.
- Press over the key of the UPS for more than 3 seconds to shutdown the inverter. The acoustic alarm will beep for 3 seconds. The equipment will transfer to "Bypass mode".
☐ For a parallel system.
-Press over the key ☑ any UPS for more than 3 seconds to shutdown all the inverters. The acoustic alarm will beep for 3 seconds. The equipments that belong to the current parallel system will transfer to "Bypass mode".
☐ Put all the equipment/s on manual bypass. To do it remove the cover from manual bypass switch, which is located at the back of each equipment and turn all the switch to position "BYPASS."
In parallel systems, proceed in the same way in each equipment.
Keep in mind that on "Bypass mode" or with the switch on "BYPASS" position, the loads will be exposed to fluctuations of voltage, frequency and mains faults or blackouts, so in case it were possible, choose one day with the lowest probability of faults (days without fluctuations, days without storms,... ) and do it as fast as possible.
The UPS still supplies output voltage, from mains directly or through the static bypass line (in those installations that it is available), through the manual bypass of the equipment.
☐ Also, if the protection panel has manual bypass switch, remove the mechanical lock and turn the switch "On" (BYPASS).
In this case and in this case only, turn the output switch/es from distribution panel to "Off", depending if there is only one UPS or a system of two equipments in parallel.
The UPS is completely shutdown and inactive and loads are supplied through the manual bypass of the distribution panel.
6.5.3. Transference to normal mode.
- The procedure to transfer from maintenance bypass to normal mode, is the same for a single UPS or parallel system, less the quantity of actions to make:
☐ If the protection panel has manual bypass switch:
- Turn the output circuit breaker protection/s of the distribution panel to "On" previously, depending if there is a single UPS or a system of two equipments in parallel.

If the manual bypass switch is manipulated before turning "On" the output switch/es of the tion panel, the power supply to the loads will be
- Turn the manual bypass switch of the panel to "Off" (UPS) and put the mechanical lock.

To avoid wrong manoeuvring the mechanical lock has to be fit, otherwise the equipment and are exposed to serious damages, even the de-on of both or fire.
☐ Move the manual bypass switch to position "UPS" and put the protection cover the manual switch back.

Put back the protection cover of the manual bypass switch of all equipments, also check the use of the fixing screws, otherwise any of the limit con- of this cover could be activated and the manual by-do.
In parallel systems proceed with the same operations in each equipment.
☐ For a single equipment.
- Press over the start up key ⏻ for more than 3 seconds, the acoustic alarm will beep for 1 sec. and the UPS will start up.
Load/s are protected by the equipment again.
☐ For a parallel system.
- Press over the start up key ⏻ for more than 3 seconds in any of the UPSs and all of them will start up, finally the parallel system will be on "Normal mode"
Load/s are protected by the parallel system again.
7. Control panel with LCD.
7.1. Control panel.

Fig. 20. Control panel view.
| Button Function Description | ||
| Inverter start up | With no AC power supply and battery connected to the equipment (B0 or B1 equipments), press the button for 3 sec. as minimum to start up the inverter. | |
| UPS start up | When the unit is supplied from the AC input voltage and it is on bypass mode, press the key for more than 3 sec. to start up the inverter. | |
| UPS shutdown | When the equipment is ON and it has to be shutdown, press for more than 3 sec. over this key. | |
| Enter into the main menu | When showing the main screen of the UPS by default in the LCD, press over this key for more than 1 sec. to enter into the main menu structure. | |
| Exit from main menu | Press over this key for more than 1 sec. to escape from the current menu, to the menu by default in the UPS, without executing any command or changing any configuration. | |
| Move upwards | Press this key for 1 sec. as minimum to move up in the browsing inside a menu. | |
| Move downwards | Press this key for 1 sec. as minimum to move down in the browsing inside a menu. | |
| Enter into the structure of the next menu | Press this key for 1 sec. as minimum to select the option in the current menu or to enter in the next menu, but without changing any setting. | |
| Select an option of the menu | Press the key for 1 sec. as minimum to select the option in the current menu or to enter in the next menu, but without changing any setting. | |
| Validate the current setting | Press the key for 1 sec. as minimum to validate the modified option and change the settings. | |
Tabla 7. Functionality of the buttons or keypad of the control panel.
• The UPS has a control panel with the following parts:
☐ Four buttons or membrane keys, see table 7.
☐ A LCD panel with two colours backlight. By default, the text or graphics messages are shown in white colour over blue background.
When a critical alarm is activated on the UPS, the light of the text or graphic changes to dark orange with orange background (see table 9)
7.1.1. Acoustic alarms.
| Alarm condition | Modulation or alarm tone |
| Active fault | Continuous |
| Active warning | Beep every second |
| Output from battery | Beep every 4 seconds. With low battery (end of back up time), one beep every second. |
| Output from bypass | Beep every 2 seconds |
Tabla 8. Acoustic alarms. Condition and modulation or tone.
7.1.2 UPS status and color LCD display, as condition.
| Code | Condition | Description | Color LCD |
| 01 | State | Bypass abnormal. | Blue |
| 02 | State | Utility abnormal. | Blue |
| 03 | State | HE abnormal. | Blue |
| 04 | Warning | Site wiring fault. | Blue |
| 11 | Warning | Battery disconnect. | Blue |
| 12 | Warning | Battery low. | Blue |
| 13 | Warning | Service battery. | Blue |
| 15 | Warning | Charger fail. | Blue |
| 16 | Warning | Battery over voltage. | Blue |
| 17 | State | ABM state charging. | Blue |
| 18 | State | ABM state floating. | Blue |
| 19 | State | ABM state resting. | Blue |
| 1A | State | ABM state OFF. | Blue |
| 1B | State | Battery test fail. | Blue |
| 1C | State | Battery test interrupt. | Blue |
| 21 | Fault | BUS over voltage. | Red |
| 22 | Fault | BUS under voltage. | Red |
| 23 | Fault | BUS unbalance. | Red |
| 24 | Fault | BUS short. | Red |
| 25 | Fault | BUS softstart fail. | Red |
| 31 | Fault | Output short circuit. | Red |
| 32 | Fault | Inv over voltage. | Red |
| 33 | Fault | Inv under voltage. | Red |
| 34 | Fault | Inv softstart fail | Red |
| 41 | Fault | Output overload. | Red |
| 42 | Fault | Inv overload fault. | Red |
| 43 | Fault | Bypass overload fault. | Red |
| 51 | State | UPS control power On. | Blue |
| 52 | State | UPS On from panel. | Blue |
| 53 | State | UPS On from COM. | Blue |
| 54 | State | UPS auto On | Blue |
| 55 | State | UPS Off from panel. | Blue |
| 56 | State | UPS Off from COM. | Blue |
| 57 | State | UPS auto Off | Blue |
| 62 | State | In battery mode. | Blue |
| 63 | State | In ECO mode. | Blue |
| Code Condition Description Color LCD | |||
| 65 State In converter node. Blue | |||
| 71 Warning EPO active. Blue | |||
| 72 Warning | On maintain Bypass (only models of 4.. 10 kVA). | Blue | |
| 81 | Fault | Heatsink over temperature. | Red |
| 82 | Warning | Ambient over temperature. | Blue |
| 83 Warning | Ambient NTC abnormal (only models of 0.7.. 3 kVA). | Blue | |
| 84 | Warning | Fan failure. | Blue |
| 86 Warning | Heatsink over temperature pre-alarm (only models of 0.7.. 3 kVA). | Blue | |
| 87 Warning | Heatsink NTC abnormal (only models of 0.7.. 3 kVA). | Blue | |
| 94 Warning | Byp relay sticked (only models of 4.. 10 kVA). | Blue | |
| A3 | Warning | Fatal EEPROM fault (only models of 4.. 10 kVA). | Blue |
Tabla 9. UPS status and color LCD display, as condition.
7.1.3. Main screen.
- UPS control panel provides useful information about the status of the load, events, measures, identification and setting through the screen of the front panel.
- Immediately after the start up, the LCD panel shows the SALICRU logo for few seconds and next the main screen by default is displayed, where the status of the equipment is represented (figure 21).
- When the same menu is displayed for 15 minutes in the LCD, and there has not been any manipulation over the buttons, it will return back to main screen automatically.
- The main screen shows the following information by default
☐ Summary of the status, including the operating mode and load.
☐ Status of the alarm, if there is any one active.

The alarm includes the fault and warning informations.
☐ Battery and status of the charge, including the battery voltage, charge level and charger status.
☐ Continuous information includes the UPS in parallel and running time.
- Figures corresponding to the displayed parameters of the control panel in this section are mere examples and they can differ in some models, although the parameters and information are the same, they can differ in shape and layout.

other
UPS power supply information | Category | Line (V) | Output (V) | Load (VA) | | :--- | :--- | :--- | :--- | | equipment operating mode | 220 | 220 | 1000 | | Information of the batteries | 50 Hz | 50 Hz | 900 | | Information of connected UPS load level | 100% | 100% | 100% |Fig. 21. Main screen of the equipment.
- All the screens shown in the figures of this chapter correspond to a 1kVA equipment, as an example. For more details of LCD screen shoots from control panel, see the next section 7.2.
7.2. Operating modes of the equipment.
- The different graphical symbols displayed in the LCD of the control panel, correspond to the following operating modes or status:
Normal mode:
The UPS is running on normal mode with power supply present.

Fig. 22. Normal mode screen.
Battery mode:
When the UPS is running on battery mode, the alarm beeps every 4 seconds.

Fig. 23. Battery mode screen.
☐ Bypass with output voltage:
The output voltage that feeds the load comes from the commercial mains directly through the internal filters. This way the loads are not protected against mains faults or blackouts. The acoustic alarm beeps every 2 minutes.

Fig. 24. Bypass with output voltage screen.
☐ Bypass without output voltage:
The UPS is running on bypass mode without output voltage.

other
| Line | Output | Load | | :--- | :--- | :--- | | 220 V 50 Hz | 0 V 0 Hz | 0VA 0 W | | 100% | [Bar] | 0% |Fig. 25. Bypass without output voltage screen.
□ ECO mode:
Once the UPS is started up, the energy that feeds the load/s comes from the commercial mains directly through the internal filters, meanwhile the voltage is inside the limits that are set as normals.
When input power supply fails, due to fault or wrong, the equipment will transfer from "Line mode" to "Battery mode" to supply the load/s properly.
-This function can be activated through the control panel (by means of password) or through a suitable software (WinPower, ...)
- The transfer time between "ECO mode" and "Battery mode" is around 10 ms. Nevertheless, this time can be excessive for some type of loads, so the ECO mode operating has to be considered according to this issue.

Fig. 26. ECO mode screen.
☐ Frequency converter mode.

bar
| Category | Value (%) | |---|---| | Line | 220 V 60 Hz | | Output | 220 V 50 Hz | | Load | 1000VA 900 W | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Output | 220 V 50 Hz | | Load | 1000VA 900 W | | ? | 100% | | ? | 100% |Fig. 27. Frequency converter mode screen.
In the frequency converter mode, the static bypass is disabled and any of the operating modes of itself, because the input and output frequencies of the UPS are different (50 or 60 Hz). When the input power supply fails, due to fault or wrong, the equipment will transfer to "Battery mode" to feed the load/s properly.
-This function can be activated through the settings of the control panel (by means of password) or by means of a suitable software (WinPower, ...)
- The power of the UPS will be the 80% of the nominal, when it is running on "Frequency converter mode".
□ Warning.
When there is a "Warning", it means that there is something wrong in the UPS operating. Usually, the problems are not serious and the equipment can be kept running. However, pay attention to it, because the UPS could fail.

Fig. 28. Warning screen.
□ Fault.
When a fault occurs, it reveals that some serious problems have happened, the UPS will break the output voltage or will transfer to bypass and the alarm will be saved. The screen will change its blue colour to orange as an intuitive warning mode.

Fig. 29. Fault screen.
Overload.

bar
| Metric | Value | | :--- | :--- | | Line | 220 V | | Output | 220 V | | Load | 1200 VA | | Line | 50 Hz | | Output | 50 Hz | | Load | 1080 W | | Bar height (%) | 100% | | Bar height (%) | 120% |Fig. 30. Overload screen.
When the UPS is overloaded, an alarm is triggered with a beeping of twice per second. Decrease the load level connected at the output of the equipment, till the power doesn't exceed from the nominal power of itself.
□ Battery test.
The UPS is running a battery test.

bar
| Category | Value | |---|---| | Line | 220 V (50 Hz) | | Output | 220 V (50 Hz) | | Load | 1000VA (900 W) | | ✓ | 100% [Bar] | | 100% Bar (Bar) | 100% [Bar with Bars]Fig. 31. Battery test screen.
Battery test screen.
When the battery status sensor shows "Faulty battery detected" or "Battery disconnected", the symbol of faulty battery is shown in the screen and the alarm will be saved.

Fig. 32. Faulty battery screen.
7.3. Operating of the LCD panel.
- Less in the main screen, which summarizes the UPS status, the user can get more useful information about the current conditions of the equipment, details of measures, event data logger, the own identification of the UPS, and change the settings to be adapted to the own needs, and optimise the function of the equipment.
7.3.1. Main screen.
- From main screen, when pressing the key ⚠️ for less than 1 sec., it is shown detailed information about the alarm, parallel system and batteries.
- From the same main screen, when pressing the key ⚠ for more than 1 sec., the Structure of the main menu will be displayed (see figure 33).
To display the different submenus, press the keys ☑ for less than 1 sec., considering that with each pulsation the submenus will be moved to the next or previous depending on the pressed key.
The Structure of the main menu includes six submenus:
UPS status.
□ Event log.
□ Measurement.
□ Control.
□ Identification.
☐ Setting. With password only and by the S.T.S.

flowchart
graph TD
A["Structure of the menu, UPS status"] --> B["Line: 220 V, 50 Hz"]
A --> C["Output: 0 V, 0 Hz"]
A --> D["Load: 0VA, 0 W"]
B --> E["100%"]
C --> F["0%"]
D --> G["Press or sec."]
H["Press"] --> I["UPS status summary (Screen by default)"]
I --> J["Alarm screen"]
J --> K["Alarm #600 Output Overload"]
K --> L["System UPS quantity Total 1 System mode Redundancy mode"]
L --> M["Work mode: Line Battery charging Charge level 100%"]
M --> N["Pantalla Estado baterias"]
N --> O["(*) Accessible with S.T.S password only."]
O --> P["Setting"]
P --> Q["Identification"]
Q --> R["Control"]
R --> S["Measurement"]
S --> T["Event log"]
T --> U["Press or sec."]
U --> V["UPS status"]
V --> W["Structure of main menu"]
W --> X["UPS status"]
X --> Y["Event log"]
Y --> Z["Measurement"]
Z --> AA["Control"]
AA --> AB["Identification"]
AB --> AC["Setting"]
Fig. 33. Main screen structure.

flowchart
graph TD
A["Main menu structure"] --> B["UPS status"]
B --> C["Event log"]
C --> D["..."]
B --> E["Structure of the menu, UPS status"]
E --> F["Input: 220 V, 220 V, 220 V, 50 Hz"]
E --> G["Output: 0 V, 0 Hz, 0 W"]
F --> H["Alarm #800 Output Overload"]
G --> I["Parallel system screen"]
H --> J["System UPS quantity Total:1 System mode: Redundancy mode"]
I --> K["Work mode: Line Battery charging Charge level: 100 %"]
J --> L["Press sec."]
K --> M["Press sec."]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style E fill:#cfc,stroke:#333
style F fill:#fcc,stroke:#333
style G fill:#fcc,stroke:#333
style H fill:#ffc,stroke:#333
style I fill:#ffc,stroke:#333
style J fill:#ffc,stroke:#333
style K fill:#ffc,stroke:#333
style L fill:#ffc,stroke:#333
Fig. 34. UPS status screens.
7.32 UPS status submenu.
- When pressing the key ⬇ for less than 1 sec. from the "UPS status" screen, it is returned to main screen.
- The contents of the UPS status menu, is the same as the main screen (see figure 34).
- When pressing the key ☐ or more than 1 sec., the LCD will show the "UPS status" screen of the main menu structure again.

flowchart
graph TD
A["Main menu structure"] --> B["UPS status"]
B --> C["Event log"]
C --> D["..."]
C --> E["Press sec."]
E --> F["Alarm #600 Output Overload"]
F --> G["35 hour 14 min 50 second"]
F --> H["Press sec."]
H --> I["Event #1450 Clock set done"]
I --> J["15 hour 10 min 30 second"]
J --> K["Press sec."]
K --> L["Alarm #603 Output Short circuit"]
L --> M["1 hour 10 min 02 second"]
M --> N["..."]
N --> O["Event logger structure menu"]
Fig. 35. Event logger submenu screens.

flowchart
graph TD
A["UPS status"] --> B["Event log"]
B --> C["Measurement"]
C --> D["..."]
C --> E["Ambient Temperature 29.1 °C 83.4 °F"]
C --> F["Battery 228.2v 100%"]
C --> G["DC Bus 226.3v 225.9v"]
C --> H["Output 850w 1130VA"]
C --> I["Output 24.9A 75%"]
C --> J["Output 220.4v 60.0Hz"]
E --> K["Press sec."]
F --> L["Press sec."]
G --> M["Press sec."]
H --> N["Press sec."]
I --> O["Press sec."]
J --> P["Press sec."]
style A fill:#f9f,stroke:#333
style B fill:#f9f,stroke:#333
style C fill:#f9f,stroke:#333
style D fill:#f9f,stroke:#333
style E fill:#ccf,stroke:#333
style F fill:#ccf,stroke:#333
style G fill:#ccf,stroke:#333
style H fill:#ccf,stroke:#333
style I fill:#ccf,stroke:#333
style J fill:#ccf,stroke:#333
style K fill:#cfc,stroke:#333
style L fill:#cfc,stroke:#333
style M fill:#cfc,stroke:#333
style N fill:#cfc,stroke:#333
style O fill:#cfc,stroke:#333
style P fill:#cfc,stroke:#333
style Q fill:#fcc,stroke:#333
Fig. 36. Measurement submenu screens.
7.3.3. Data logger submenu.
- When pressing the key ☑ for less than 1 sec. from the "Event log" screen, it is accessed to the event data logger structure (see figure 35).
- Alarm and faults data logger is registered in this submenu and each one includes the event code, as well as the period of time that the UPS was running under these conditions.
- When pressing the keys ☑ or ☑ for less than 1 sec. the next and previous events can be checked depending on the pressed key. The system is cyclic so you can move in both directions.
The maximum quantity of registers of the data logger is 50, so a new input will delete the oldest register.
- When pressing the key ☑ for more than 1 sec., the LCD panel will display the screen "Event log" from the main menu structure again.
7.3.4. Measurement submenu.
- When pressing over the key -for less than 1 sec. from "Measurement" submenu, it is accessed to the measurements structure (see figure 36).
- From this submenu the following information can be obtained:
☐ Input voltage and frequency.
☐ Output voltage and frequency.
☐ Output current and load level connected in %.
□ Supplied power at the output in W and VA.
☐ Ambient temperature in centigrade degrees (°C) and Fahrenheit (°F).
☐ DC bus voltage.
☐ Battery voltage and battery charge level.
- When pressing the key (for more than 1 sec., the LCD will display the "Measurement" screen from main menu structure again.

flowchart
graph TD
A["Main menu structure"] --> B["Control"]
B --> C["Identification"]
C --> D["Setting"]
D --> E["(*)"]
E --> F["Reset: no"]
B --> G["Buzzer mute"]
G --> H["Buzzer mute: no"]
G --> I["Start battery test"]
I --> J["Status: battery test Passed"]
I --> K["Schedule battery test: no"]
I --> L["Load segments"]
L --> M["Load segment 1: <on>"]
L --> N["Load segment 2: <off>"]
G --> O["Clear EPO status"]
O --> P["Status: EPO active"]
O --> Q["Clear: no"]
O --> R["Reset fault state"]
R --> S["Status: fault active"]
R --> T["Reset fault: no"]
O --> U["Clear event log"]
U --> V["Total events: 50"]
U --> W["Clear events log: no"]
O --> X["Restore factory settings"]
X --> Y["Reset: no"]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style C fill:#cfc,stroke:#333
style D fill:#fcc,stroke:#333
style E fill:#cff,stroke:#333
style F fill:#ffc,stroke:#333
style G fill:#fcc,stroke:#333
style H fill:#ffc,stroke:#333
style I fill:#fcc,stroke:#333
style J fill:#ffc,stroke:#333
style K fill:#fcc,stroke:#333
style L fill:#ffc,stroke:#333
style M fill:#fcc,stroke:#333
style N fill:#ffc,stroke:#333
style O fill:#fcc,stroke:#333
style P fill:#ffc,stroke:#333
style Q fill:#fcc,stroke:#333
style R fill:#ffc,stroke:#333
style S fill:#fcc,stroke:#333
style T fill:#ffc,stroke:#333
style U fill:#fcc,stroke:#333
style V fill:#ffc,stroke:#333
Control submenu for 0,7 to 3 kVA models.

flowchart
graph TD
A["Main menu structure"] --> B["..."]
B --> C["Control"]
C --> D["Identification"]
D --> E["(*) Setting"]
C --> F["Buzzer mute"]
F --> G["**"]
G --> H["Single UPS turn Off"]
H --> I["Hold enter key to turn Off UPS"]
I --> J["**"]
J --> K["Parallel UPS battery test"]
K --> L["Clear EPO status"]
L --> M["Reset fault state"]
M --> N["Clear event log"]
N --> O["Restore factory settings"]
O --> P["Reset: no"]
Q["(*) Acclesible with password only by the S.T.S."] --> R["**"]
S["(*) Equipments connected in parallel only"] --> T["**"]
U["Press 1 sec."] --> C
V["Press <1 sec."] --> D
W["Press >1 sec."] --> F
X["Press no"] --> D
Y["Press"] --> F
Z["Press"] --> H
AA["Press"] --> I
AB["Press"] --> J
AC["Press"] --> K
AD["Press"] --> L
AE["Press"] --> M
AF["Press"] --> N
AG["Press"] --> O
Control submenu for 4 to 10 kVA models.
Fig. 37. Control submenu screens.
7.3.5. Control submenu.
- When pressing the key the key (for less than 1 sec. from this "Control" submenu, it is accessed to the control structure (see figure 37 depending on the power rate of the model).
- The acoustic alarm can be activated or deactivated from this menu. Any new alarm, will activate the own acoustic alarm.
- Battery test: It is a control command of the UPS, to make a battery test of the equipment. It is also possible to do it in the 0,7 to 3kVA units manually (see section 7.1).
- By means of the "Loads segments" menu, the IEC outlets group stated as "LS1" and/or "LS2" can be activated "On" or deactivated "Off", so the UPS will supply or not voltage to the connected loads respectively.
Also by means of the WinPower software, it is possible to combine other functionality of this menu.
- EPO status cleared: When the EPO button is activated, the UPS output breaks the supply, either if the configuration is single or it is parallel and power supply to load/s is broken.
To restore the normal condition, the EPO button has to be deactivated previously (close the circuit again) and enter into the "Clear EPO status" submenu to clear the current status of the EPO. Doing this the alarm of the UPS is cleared and the output voltage is restored through the bypass (bypass mode). The equipment recover the start up functionality with its normal procedure. See figure 38 as an example.
- Error status cleared: When there is a fault in the UPS, the fault and alarm mode is activated.
To restore the normal status, enter into this menu to clear the error status. Doing this the alarm of the UPS is cleared and the output voltage is restored through the bypass (bypass mode). It is needed to check the cause and cancel it before starting up the equipment again with its normal procedure.
- The event log clearance of the last events can be done through this menu. But in lack of this the system logs in the memory the las 50 events.
- Restore the preset configuration from factory: All values are set to the preset values from factory. This action can only be done on bypass mode.
- Shutdown of a single UPS (individual): It is a command to shutdown the UPS that is running in a parallel system currently and other equipment of the system will supply the load/s in the parallel system.

flowchart
graph TD
A["Clear EPO status"] -->|Press ← sec.| B["Default: no ← (1)"]
B -->|Press ← o ← sec.| C["Default: Yes"]
C -->|Press ← < 1 sec.| D["Default: Yes ← (2)"]
Fig. 38. Example of screens of EPO status cleared.
- Battery test of a single UPS (individual): It is a control command for a UPS that it is running in a parallel system currently, to make a battery test equipment by equipment.
- Battery test of parallel UPSs: It is a control command of all parallel UPS, to make the battery test in all the equipments that made it up.
7.3.6. Identification submenu.
- When pressing over the key for less than 1 sec. from "Identification" submenu, it is accessed to the identification structure (see figure 39).
This submenu shows the serial number of the UPS, firmware version and model of the equipment.
- When pressing the key ☑ for more than 1 sec., the LCD panel will display the "Identification" screen from the main menu structure again.
Main menu structure

flowchart
graph TD
A["..."] --> B["Identification"]
B <--> C["Setting"]
B <--> D["Type/Model: TWIN RT 6000VA online"]
D <--> E["Serial Number: xxxxxxxx"]
E <--> F["UPS Firmware: xxxxx-xxxx"]
B <--> G["(*) Accessible with the S.T.S password only"]
B <--> H["(*) Accessible with the S.T.S password only"]
B <--> I["(*) Accessible with the S.T.S password only"]
J["Press"] --> K["sec."]
L["Press"] --> M["sec."]
N["Press"] --> O["or sec."]
P["Press"] --> Q["sec."]
Fig. 39. Identification submenu screens.
- When pressing the key ☑ for more than 1 sec., the LCD panel will show the "Identification" screen of the main menu structure again.
7.3.7. Setting submenu.
- This submenu is exclusively reserved for Service and Technical Support or authorised personnel and it is only accessible by password.
Some settings modify the specifications and settings to activate or deactivate some functions. Wrong modifications and/or settings can make possible faults or lack of protection to the own UPS and even they can affect or damage the load/s, battery or the own equipment directly.
- Almost all the settings can only be done meanwhile the UPS is on bypass mode.
7.4. Special functions
The UPS has some special functions, that could satisfy a special application of the user.
In case you require any of these special functionalists, contact with the S.T.S. to change the standard configuration from factory.
7.4.1. Operating on ECO mode.
7.4.1.1. Short description of the ECO mode.
- "ECO mode" function allows supplying the load/s from mains directly, through the internal filters only, meanwhile the energy is inside the limits, so the UPS allows an "Economy mode" and with high efficiency >0.97.
- When mains is out of tolerances (voltage and/or frequency), or there are mains failures or blackouts in the power supply, the UPS will transfer to "Normal mode" or "Battery mode" depending on the case and the load/s will be supplied in a safety way.
• Nevertheless, the disadvantages are:
☐ Load can't be protected at 100 %, because on "Line mode" the load/s are supplied from commercial mains directly and through the internal filters of the bypass.
☐ The transfer time of the "ECO mode" to "Battery mode" is 10ms approximately.
Therefore, this function is not suitable for some sensitive loads or areas with unstable power supply.
7.4.12 To establish the ECO mode function.
- The function can be activated or deactivated through the "Setting" submenu (see section 7.3.7).
7.5. Operating as frequency converter.
7.5.1.1. Short description of the frequency converter function.
- In the converter mode, the static bypass is disabled and any of the operating modes of itself, because the input and output frequencies are different (50 or 60 Hz). When input mains fails, either due to a blackout or wrong, the equipment will transfer to "Battery mode" to supply the load/s properly.
- The output frequency is set to the preset value and required by the loads. Nevertheless, the contra is the capacity of the UPS, which is derated up to the 70% of the nominal in the "Converter mode".
7.5.1.2 To establish the Converter mode function.
- The function can be activated or deactivated through the "Setting" submenu (see section 7.3.7).
8. Maintenance, warranty and service.
8.1. Battery maintenance.
- Pay attention to the safety instructions regarding battery (see document EK266*08).
- The UPSs from SLC TWIN RT series only requires a minimum maintenance. The used battery in the standard models is lead acid, sealed, VRLA and maintenance free. These models require a minimum of reparations. The only requirement is to charge the UPS regularly, in order to prolong the battery lifetime. Meanwhile, it is connected to the power supply, never mind if the UPS is ON or OFF, it will keep the batteries charged and will give protection against overcharging and undercharging.
- In equipments that include Pb-Ca batteries, the figures, stated in table 2 of the EK266*08 document, of charge period time depending on the temperature that they are exposed, must be respected, otherwise the warranty will be invalidated.
- Under normal conditions, the battery lifetime is from 3 to 5 years 25irc C. In case that the battery was not in good conditions, it has to be replaced before. This replacement has to be done by qualified staff.
• Always replace them with the same quantity and type. - Do not replace one battery only. All batteries have to be replaced at the same time and following the instructions of the manufacturer.
- Usually, the batteries should be charged and discharged every 4 or 6 months. The charging would be started after a UPS shutdown due to a low battery (discharging). Charging time for standard UPS should be 12 hours as minimum.
8.1.1. Notes for installing and replacing the batteries.
- If it is needed to replace the connection of any wire, purchase original parts through authorised distributors or service centres in order to avoid overheating and sparks with fire risk because the size is not enough.
- Do not short the + and - poles of the batteries, there is risk of fire or electrocution.
- Be sure that there is no voltage before touching the batteries. Battery circuit is not isolated from the input. Hazardous voltages can be found between the battery and earth terminals.
- Although the input and bypass circuit breaker switches (the last one in 4 to 10kVA models with the respective power supply mains) are turned off, the internal parts of the UPS are still connected to the batteries, so there are hazardous voltages inside.
Therefore, before doing any reparation or maintenance task, the internal battery fuses have to be removed and/or the interlink connections between them and the UPS.
- Batteries have hazardous voltages. The battery maintenance and replacement have to be done by qualified personnel and
familiarised with them. Nobody else can manipulate them.
8.2. UPS Trouble Shooting guide.
If the UPS doesn't work properly, check the information given by the LCD of the control panel, according to the models and power of the equipment. Try to solve the problem by means of the established steps in the tables 9 and 10. In case the problem persists, consult with our Service and Technical Support S.T.S..
When it is needed to contact with our Service and Technical Support S.T.S., provide the following information:
• UPS model and serial number.
• Date when the problem occurred.
- Complete description of the problem, including the information given by the led or LCD panel and the status of the alarms.
- Power supply condition, type of load and the level connected to the UPS, ambient temperature, cooling conditions.
- Information of the batteries (capacity and battery quantity), if the equipment is (B0) or (B1) -with external batteries-.
• Other informations that you may think that they are important.
8.2.1. Troubleshooting guide. Alarm or fault indications.
| Code Description of the LCD panel | Possible cause Solution | ||
| 21 | Bus Over Voltage | Fault due to positive DC bus overvoltage. | The UPS transfers the load over the inverter (battery mode). |
| 22 | Bus Under Voltage | Fault due to positive DC bus undervoltage.. | The UPS transfers the load over the inverter (battery mode). |
| 23 Bus | Unbalance | Fault in the balancing of positive and negative BUS. | The UPS transfers the load over the inverter (battery mode). |
| 24 | Bus Short | BUS voltage decreases very fast. | Consult with the S.T.S. |
| 25 | Bus Softstart Fail | Fault of the DC BUS soft start. | Consult with the S.T.S. |
| 31 Output Short Circuit | The UPS detects a wrong output imedance, considering a short-circuit. | The UPS will make a shutdown after five voltage cycles. | |
| 32 | Inv Over voltage | Inverter fault due to overvoltage. | The UPS transfers the load over the bypass (bypass mode). |
| 33 | Inv Under voltage | Inverter fault due to undervoltage. | The UPS transfers the load over the bypass (bypass mode). |
| 34 | Inv Softstart Fail | Fault of the inverter soft start. | Consult with the S.T.S. |
| 41 | Output Overload | Output overload. | Check the load and remove the non-critical ones or if any load has failed or it is damaged. The UPS is still working normally, but it can transfer to bypass mode in case the problem persists or the load is increased.When this condition is finished the alarm is cancelled. |
| 42 Inv Overload Fault | The UPS transfers the load over the bypass (bypass mode) due the inverter overload. | Check the load and remove the non-critical ones or if any load has failed or it is damaged. The UPS will transfer the load over the inverter (battery mode), when the load is the shuitable. | |
| 43 Byp Overload Fault | The UPS doesn't supply output voltage on bypass or ECO modes, due the overload. | Check the load and remove the non-critical ones or if any load has failed or it is damaged. | |
| 81 Heatsink Over Temperature | Heatsink overtemperature inside the equipment is too high. | Check the UPS cooling and ambient temperature of the room. | |
| 93 | Back Feed(sólo en modelos >3 kVA) | On battery mode, bypass has voltage. | Transfer to manual bypass and consult with the S.S.T..Do not touch the power supply terminals of the equipments that are connected to an electrical installation supplied by a UPS. Even, it is dangerous with no power supply, because the equipment is an energy genset. |
Tabla 10. Troubleshooting guide. Alarm or fault indications.
8.2.2. Troubleshooting guide. Warning indications.
| Code Description in the LCD panel | Possible cause Solution | ||
| 02 | Utility Abnormal | Input power supply out of range. | Check the AC input mains status. |
| 04 Site Wiring Fault | Neutral fault to earth detected. The alarm is triggered when there is a voltage difference between the earth and neutral >15V. | Reverse the polarity of the input cables 8phase and neutral). By default the detector is activated. It can be deactivated through the control panel with LCD. | |
| 11 | Battery Disconnect | Low battery voltage. It can be due a blown fuse, wrong connection of the battery module connector or fault in the connection among them, either in the UPS or int he module. | Check the connection of the battery module with the UPS, if any. For any other different incident or if the problem persists, contact with the S.T.S.. |
| 12 | Battery Low | The UPS works on battery mode and the batteries are depleted (low or very lows). | It is a warning indication, because the remaining back up time depends on the % of connected load. Depending on the load and quantity of external battery module (options), the warning can be activated when there is a 25% of their capacity. |
| 13 | Service Battery | Battery block voltage failure detected. The charger has been deactivated as caution measure. | Consult with the S.T.S.. |
| 15 | Charger Fail | Battery charge failure. | Charger is shutdown till the next charge cycle. Consult with the S.T.S.. |
| 16 | Battery Over Voltage | Battery overvoltage. | Charger is shutdown till the next charge cycle. Consult with the S.T.S.. |
| 71 EPO Active | EPO button open or close, depending on the selection set in the control pane. Factory preset is open. | Check the status or condition of the EPO button. | |
| 72 | On Maintain Bypass (>3 kVA models only) | Manual bypass switch on BYPASS position and/or the protection cover of the switch is removed. | Check the position of the swith and/or the protection cover is fitted in. |
| 82 | Ambient Over temperature | Ambient temperature of the room is high. | Check the cooling of the room and the distance with the environment is as minimum the one stated in the document EK266*08. |
| 83 | Ambient NTC abnormal (Up to 3 kVA models only) | Ambient temperature of the room is higher than the stated in the specifications. | Check the cooling of the room and the distance with the environment is as minimum the one stated in the document EK266*08. |
| 84 Fan Failure | Fan blocking or fault or failure of its power supply. | Check the fans of the UPS. | |
| 86 | Heatsink Over Temperature pre-alarm (Up to 3 kVA models only) | Temperature inside the equipment is very high, in short the temperature will exceed the UPS limit temperature for blocking it. | Check the UPS cooling, the ambient temperature of the room and the the distance with the environment is as minimum the one stated in the document EK266*08.If the UPS transfers to bypass mode, it will come back to its normal operating when the temperature is below of the blocking level.If the problem persists, shutdown the UPS, amke sure that the air flow around the UPS is not restricted and take out any heat source. Leave the equipment cool and re-start it up. |
| 87 | Heatsink NTC abnormal (Up to 3 kVA models only) | ||
| 94 | Byp Relay Sticked (>3 kVA models only) | Static bypass relay activated. Consult with the S.T.S.. | |
| A3 | Fatal EEPROM Fault (>3 kVA models only) | UPS can't read the EEPROM properly. Internal fault. | Consult with the S.T.S.. |
Tabla 11. Troubleshooting guide. Warning indications.
8.2.3. Troubleshooting guide. Other circumstances.
| Circumstance or conditionCode Description in the LCD panel | Possible cause Solution | ||
| 01 | Bypass Abnormal | Bypass power supply out of range. | Check the status of the AC bypasss. |
| 02 | Utility Abnormal | Input power supply out of range. | Check the status of the AC input mains. |
| 03 HE Abnormal | Bypass power supply out of range on ECO mode operating. | Check the status if the AC input mains. | |
| 17 | ABM State Charging | Battery charger on charge status. | - |
| 18 | ABM State Floating | Battery charger on floating status. | - |
| 19 | ABM State Resting | Battery charger on rest mode (no operation). | - |
| 1A | ABM State OFF | Battery charger shutdown. | - |
| 1B | Battery Test Fail | Battery test fault | Repeat the process. If the result is the same consult with the S.T.S. |
| 1C | Battery test Interrupt. | Battery test process interrupted. | - |
| 51 | UPS Control Power On | UPS control start up. | - |
| 52 | UPS On from Panel | UPS start up through the control panel. | Check the status if the AC input mains. |
| 53 | UPS On from COM | Start up through the COM port. | - |
| 54 | UPS Auto On | Automatic start up. | - |
| 55 | UPS Off from Panel | UPS shutdown by the control panel. | - |
| 56 | UPS Off from COM | Equipment shutdown through the COM port. | - |
| 57 | UPS Auto Off | Automatic shutdown of the equipment. | - |
| 62 In Battery mode | An AC power supply failure has occurred and the UPS is on battery mode. | The UPS is supplying energy to the load with the battery energy.Shutdown the load gradually and the equipment too. | |
| 63 In ECO mode | The UPS is on bypass when the it works on ECO mode. | The UPS is on bypass as normal mode of operating with high efficiency. The batteru mode is available, so the load protection too. | |
| 65 In converter mode | The equipment works as frequency converter. | On this operating mode, the bypass is disabled and the load limit is the 80% of the nominal of the equipment. | |
| A2 | Clock Set done | Time setting done. | - |
Tabla 12. Troubleshooting guide. Other circumstances or conditions.
8.3. WARRANTY CONDITIONS.
8.3.1. Warranty terms.
The warranty conditions for the acquired product can be found in our website and in that you will be able to register it. It is recommended to do it as soon as possible in order to include it in the Technical Service & Support (T.S.S.) database. Among other advantages, it will be easier to make any regulatory process to allow the T.S.S. action in case of any hypothetical fault.
8.3.2. Out of scope of supply.
Our company is not forced by the warranty if it appreciates that the defect in the product doesn't exist or it was caused by a wrong use, negligence, installation and/or inadequate testing, tentative of non-authorised repairing or modification, or any other cause beyond the foreseen use, or by accident, fire, lightnings or other dangers. Neither it will cover, in any case, compensations for damages or injuries.
8.4. Technical service network.
Coverage, both national and international, from our Technical Service & Support (T.S.S.), can be found in our Website.
9. Annexes.
9.1. General technical specifications.
| Models: TWIN RT TWIN RT (Bornes para dos lineas de AC) | ||||||||||
| Available powers (kVA / kW) (**) | 0.7 / 0.63 | 1 / 0.9 | 1.5 / 1.35 | 2 / 1.8 | 3 / 2.7 | 4 / 3.6 | 5 / 4.5 | 6 / 5.4 | 8 / 7.2 | 10 / 9 |
| Technologya On-line double conversion, PFC, double DC bus | ||||||||||
| Rectifier | ||||||||||
| Input tipology Single phase | ||||||||||
| Quantity of cables | 3 cables - phase R(L) + Neutral (N) and earth | |||||||||
| Nominal voltage | 208 / 220 / 230 / 240 V ac | |||||||||
| Input voltage range with 100 % load | 176÷276 V ac | |||||||||
| Input voltage range with 50 % load | 120÷276 V ac | |||||||||
| Transference voltage range: | Depending on the load percentage between 100 and 50 % | |||||||||
| - Low mains voltage | 176 / 110 V ac (±3 %) | |||||||||
| - Low mains voltage restored 186 / 130 V ac (±3 %) | ||||||||||
| - High mains voltage | 276 V ac (±3 %) | |||||||||
| - High mains voltage restored | 266 V ac (±3 %) | |||||||||
| Frequency | 50 / 60 Hz (autosensing) | |||||||||
| Input frequency range | ± 10 % (45-55 / 54-66 Hz) | |||||||||
| THDi | < 5 % at full load | |||||||||
| Power factor | >0.99 (at full load) | |||||||||
| Inverter | ||||||||||
| Technology | PWM | |||||||||
| Modulation frequency | 19.2 kHz | |||||||||
| Wave shape | Pure sinewave | |||||||||
| Nominal voltage | 208 / 220 / 230 / 240 V ac | |||||||||
| Output voltage accuracy | ± 1 % | |||||||||
| Voltage THD with linear load | < 2 % | |||||||||
| Voltage THD with non-linear load | < 5 % | |||||||||
| Transient recover time of the output voltage | 100 ms. (IEC 62040-3 non-linear load) | |||||||||
| Transient recover time of the output voltage (with load step 0 %-100 %-0 %) | ± 9 % | |||||||||
| Transient recover time of output voltage (with load step 20 %-100 %-20 %) | ± 6 % | |||||||||
| Frequency | With mains present, synchronised to input nominal frequency (45-55 / 54-66 Hz) | |||||||||
| Free running -battery mode- 50 / 60 ±0,2 Hz | Free running -battery mode- 50 / 60 ±0,1 Hz | |||||||||
| Slew rate | 1 Hz/sec. | |||||||||
| Power factor | 0.9 (by default) | |||||||||
| 0,5 to 1 | ||||||||||
| Permissible load power factor | 0.5 to 1 inductive | |||||||||
| Transfer time, inverter to battery | 0 ms. | |||||||||
| Transfer time to bypass of mains 2, out of range | - | 10 ms. | ||||||||
| Transfer time, inverter to ECO | 0 ms. | |||||||||
| Transfer time, ECO to inverter | < 10 ms. | |||||||||
| Efficiency at full load, on line mode with 100% charged battery | >87 % | >89 % | >90 % | >93 % | ||||||
| Efficiency at full load, on battery mode | >83 % | >86 % | >89 % | >90 % | >90 % | |||||
| Efficiency at full load, on ECO mode | >95 % | >96 % | >97 % | >90 % | ||||||
| Overload on line mode | 102-130 %, 12 sec. | 102-130 %, 2 min. | ||||||||
| 130-150 %, 1.5 sec. | 130-150 %, 30 sec. | |||||||||
| >150 %, 100 ms. | ||||||||||
| Overload on battery mode | 102-130 %, 12 sec. | 102-130 %, 10 sec. | ||||||||
| >130-150 %, 1.5 sec. | - | |||||||||
| >150 %, 100 ms | ||||||||||
| Crest factor | 3:1 | |||||||||
| Quantity of equipments in parallel | Not available | 2 UPSs | ||||||||
| Static bypass | ||||||||||
| Type | Common line with mains power supplyHybrid (thyristors in antiparallel + relay) | Separate terminalsHybrid (thyristors in antiparallel + relay) | ||||||||
| Nominal voltage | Mains power supply | 208 / 220 / 230 / 240 V | ||||||||
| Models: TWIN RT TWIN RT (Bornes para des líneas de AC) | ||||||||||
| Available powers (kVA / kW) (**) | 0.7 / 0.63 | 1 / 0.9 | 1.5 / 1.35 | 2 / 1.8 | 3 / 2.7 | 4 / 3.6 | 5 / 4.5 | 6 / 5.4 | 8 / 7.2 | 10 / 9 |
| Nominal frequency Mains power supply 50 / 60 Hz ±4 Hz | ||||||||||
| Batteries | ||||||||||
| Voltage 12 V DC | ||||||||||
| Capacity 7 Ah 9 Ah 5 Ah | 9 Ah | |||||||||
| Quantity of batteries in series / String voltage | 3 / 36 V DC | 4 / 48 V DC | 6 / 72 V DC | 15 / 180 V DC | 20 / 240 V DC | |||||
| Low battery voltage, block | 11,4 V DC | |||||||||
| Low battery voltage per string | 34.2 V DC | 45.6 V DC | 68.4 V DC | 171 V DC | 228 V DC | |||||
| Blocking voltage due to end of back up time | 10,5 V DC element | |||||||||
| Internal battery charger | ||||||||||
| Equalising voltage per block | 14.4 V DC | |||||||||
| Equalising voltage per string | 43.2 V DC | 57.6 V DC | 86.4 V DC | 216 V DC | 288 V DC | |||||
| Floating voltage per block | 13,65 V DC | |||||||||
| Floating voltage per string | 41.0 V DC | 54.6 V DC | 81.9 V DC | 204.7 V DC | 273 V DC | |||||
| Maximum charging current | 1,5 A | 1 A | 2 A | |||||||
| Recharging time | <3 horas al 90% | |||||||||
| Earth leakage current | <100 μA | <300 μA | ||||||||
| Voltage compensation / temperature | 18 mV per block / °C for temperatures >25°C | 20 mV per block / °C for temperatures >25°C | ||||||||
| Internal battery charger, option (B1) | ||||||||||
| Maximum charging current | 6 A | - | ||||||||
| Earch leakage current | <500 μA | - | ||||||||
| Generals | ||||||||||
| IEC inlet connectors | IEC connector 10 A | IEC connector16 A | - | |||||||
| Input terminals (Phase + Neutral + PE) | - | 3 (B1) | 3 | |||||||
| Bypass terminals (Phase + Neutral + PE) | - | - | 3 | |||||||
| IEC outlets connectors | 8 IEC 10A (4 x LS1 + 3 x LS2) + 1 IEC 16 A (4 kVA UPS only) | 4 IEC 10A + 2 IEC 16 A | 8 IEC 16 A | |||||||
| Output terminals | - | 3 (Phase, neutral and PE) | ||||||||
| Communication ports | 2 (RS232 -DB9- and USB, mutually exclusive) | |||||||||
| Monitoring software | WinPower (free download) | |||||||||
| Option cards (to be inserted into the slot) | Relays interface, SNMP, remote internet or intranet management | |||||||||
| Noise level at 1 m. | <45 dB | <50 dB | <55 dB | |||||||
| Operating temperature | 0.. +40 °C | 0.. +45 °C | ||||||||
| Storage temperature | -15.. +50 °C | |||||||||
| Storage temperature without batteries | -20.. +70 °C | |||||||||
| Operating altitude | <1000 m a.s.l. (for high altitude correct it according to table 14) | |||||||||
| Relative humidity | 0-95 % non-condensing | |||||||||
| Protection degree | IP20 | |||||||||
| Dimensions -Depth x Width x Height- (mm): UPS | 436 x 438 x 86.5 (2U) | 608 x 438 x 86.5 (2U) | 560 x 438 x 132 (3u) | 560 x 438 x 215.5 (5u) | ||||||
| Terminals | - | 70 x 194 x 118 | 80 x 416 x 108 | |||||||
| Total dimensions UPS + terminals | - | 630 x 438 x 132 (3u) | 640 x 438 x 215.5 (5u) | |||||||
| Battery | 436 x 438 x 86.5 (2U) | 608 x 438 x 86.5 (2U) | - | - | ||||||
| UPS weight (kg) | 14 | 15 | 19 | 19.5 | 29 | 45 | 47 | 47 | 82 | 83 |
| Battery module weight (kg) | 23 | 28 | 41 | - | - | |||||
| Safety | EN-IEC 62040-1; EN-IEC 60950-1 | |||||||||
| Electromagnetic compatibility (EMC) | EN-IEC 62040-2 | |||||||||
| Marking | CE | |||||||||
| Quality system | ISO 9001 and ISO 140001 | |||||||||
(**) As frequency converter mode, the supplied power is a 70% of the nominal.
Tabla 13. General technical specifications.
| Altitude (m.) | 1000 | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 | 4500 | 5000 |
| Power | 100% | 95% | 90% | 85% | 80% | 75% | 70% | 65% | 60% |
Tabla 14. Correction of power rate as regards to operating altitude.
9.2. Glossary.
- AC.- It is nominated as alternating current (abbreviation in Spanish CA and in English AC) to the electrical current in which the magnitude and direction varies in a cyclic way. The most common wave shape of the alternating current is sinewave, because the energy transmission is better. Nevertheless, some applications could need other period wave shapes, like triangular or square.
- Bypass.- Manual or automatic, it is the physical junction between the input and the output electric device.
- DC.- The direct current (CC in Spanish, DC in English) is the continuous electron flow through a cable between two points with different potential. Unlike the alternating current, in direct current the electrical loads always flow in the same direction from the highest potential point to the lowest one. Although, usually the direct current is identified with the constant current (for example the one supplied by the battery), it is continuous any current that always maintain the polarity.
- DSP.- It is the acronym of Digital Signal Processor. A DSP is a system based on a processor or microprocessor that has instructions in it, a hardware and an optimised software to develop applications where numerical operations are needed with very fast speed. Due to this, it is very useful to process analogical signals in real time: in a system that runs in this way (real time) samples are received, usually coming from an analogical/digital converter(ADC).
- Power factor.- It is defined as power factor, p.f., of an alternating current circuit, as the ratio between the active power, P, and the apparent power, S, or as the cosines of the angle that make the current and voltage vectors, designating as cos , being the value of that angle.
- GND.- The term ground, as its name states, refers to the potential of the earth surface.
- EMI filter.- Filter able to decrease the electromagnetic interferences, which is the perturbation that happens in a radio receptor or in any other electrical circuit caused by the electromagnetic radiation coming from an external source. Also it is known as EMI, ElectroMagnetic Interference, Radio Frequency Interference or RFI. This perturbation can derate or limit the efficiency of the circuit.
- IGBT.- The Insulated Gate Bipolar Transistor is a semiconductor device that is used as a controlled switch in power electronic circuits. This device has the feature of the gate signal of the effect field transistors with the capacity of high current and low voltage saturation of the bipolar transistor, combining an isolated FET gate for the input and a bipolar transistor as switch in a single device. The triggering circuit of the IGBT is as the MOSFET one, while the driving features are like the BJT.
- Interface.- In electronic, telecommunications and hardware, an interface (electronic) is the port (physical circuit) through which are sent or received signals from a system or subsystems toward others.
- kVA.- The voltampere is the unit of the apparent power in electrical current. In direct current is almost equal to the real power but in alternating current can defer depending on the power factor.
-
LCD.- LCD acronym of Liquid Crystal Display, device invented by Jack Janning, who was employee of NCR. It is an electric system of data presentation based on 2 transparent conductor layers and in the middle a special crystal liquid that have the capacity to orientate the light when trespassing.
-
LED.- LED acronym of Light Emitting Diode, is a semiconductor device (diode) that emits light almost monochrome with a very narrow spectrum, it means, when it is direct polarized and it is crossed by an electric current. The colour, (wave longitude), depends on the semiconductor material used in its construction, being able to vary from the ultraviolet one, going through the visible spectrum light, to the infrared, receiving these last ones the denomination of IRED (Infra Red Emitting Diode).
- Circuit breaker.- A circuit breaker or switch, is a device ready to break the electrical current of a circuit when it overcomes the maximum set values.
- On-Line mode.- Regarding to an equipment, it is on line when it is connected to the system, and it is in operation, and usually has its power supply turned on.
- Inverter.- An inverter, is a circuit used to convert direct current into alternating current. The function of an inverter is to change an input voltage of direct current into a symmetrical output voltage of alternating current, with the required magnitude and frequency by the user or the designer.
- Rectifier.- In electronic, a rectifier is the element or circuit that allows to convert the alternating current into direct current. This is done by rectifier diodes, which can be solid state semiconductors, vacuum or gassy valves as the mercury vapour. Depending on the features of the alternating current power supply used, it is classified as single phase, when they are fed by a single phase electrical mains, or three phase when they are fed by the three phases. Depending on the rectification type, they can be half wave, when only one of the current semi-cycles is used, or full wave, where both semicycles are used.
- Relay.- The relay(in French relais, relief) is an electromechanical device that works as a switch controlled by an electric circuit where, through an electromagnet, a set of contacts are moved and it allows to open or to close other independent electric circuits.
- SCR.- Abbreviation of «Silicon Controlled Rectifier», called commonly as Thyristor: semiconductor device of 4 layer that works as almost an ideal switch.
- THD.- They are the acronyms of «Total Harmonic Distortion». The total harmonic distortion is done when the output signal of a system is not equivalent to the one that enter into it. This lack of linearity affects to the wave shape, because the equipment has introduced harmonics that they were not in the input signal. As they are harmonics, it means multiple of the input signal, this distortion is not so dissonant and it is more difficult to detect.
salicru
The Technical Service & Support (T.S.S.) network, Commercial network and warranty information are available in website:
www.salicru.com
Product Range
Uninterruptible Power Supplies (UPS)
Lighting Flow Dimmer-Stabilisers
DC Power Systems
Static Inverters
Photovoltaic Inverters
Voltage stabilisers

@salicru_SA
www.linkedin.com/company/salicru















