SG12RT - Battery charger Sungrow - Free user manual and instructions
Find the device manual for free SG12RT Sungrow in PDF.
| Product type | Photovoltaic inverter (DC/AC converter) |
| Brand | Sungrow |
| Model | SG12RT |
| Nominal power | 12 kW |
| Input | Direct current (DC) from photovoltaic panels |
| Output | Alternating current (AC) for grid connection |
| Input voltage range | Not specified, typical 200-1000 V |
| Output voltage range | Not specified, suitable for local grid |
| Maximum efficiency | Not specified, typical >97% |
| Dimensions | Not specified, estimated 600 x 500 x 200 mm |
| Weight | Not specified, estimated 30-40 kg |
| Protection rating | Not specified, typical IP65 |
| Operating temperature range | Not specified, typical -25 °C to +60 °C |
| Main functions | DC/AC conversion, maximum power point tracking (MPPT), grid communication |
| Safety | Protection against overvoltage, overcurrent, ground faults, and automatic disconnection |
| Communication | WLAN 802.11b/g/n, 2.4 GHz band, max power 20 dBm |
| Maintenance | External cleaning with a dry cloth; periodic inspection by a professional |
| Spare parts | Contact Sungrow after-sales service for original parts |
| Repairability | Repair by qualified personnel only; unauthorized opening voids warranty |
| Standards | CE, TUV, UKCA, RoHS, compliance with EU directives 2014/35, 2014/30, 2011/65 |
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USER MANUAL SG12RT Sungrow
3-Phase PV Grid-Connected Inverter
Quick Installation Guide
SG3.0RT / SG4.0RT / SG5.0RT / SG6.0RT / SG7.0RT
SG8.0RT / SG10RT / SG12RT / SG15RT / SG17RT
SG20RT / SG5.0RT-P2 / SG6.0RT-P2 / SG7.0RT-P2
SG8.0RT-P2 / SG10RT-P2 / SG12RT-P2 / SG15RT-P2
SG17RT-P2 / SG20RT-P2
EN
- The Contents may be periodically updated or revised due to product development. The information in this guide is subject to change without notice. In no case shall this guide substitute for the user manual or related notes on the device.
- Make sure to read over, fully understand and strictly follow the detailed instructions of the user manual and other related regulations before installing the equipment. The user manual can be downloaded by visiting the website at http://support.sungrowpower.com/; or it can be obtained by scanning the QR code on the side of the equipment or the back cover of this guide.
- All installations must be performed by qualified personnel who should have training for installation and commissioning of electrical system, as well as dealing with hazards, have knowledge of the manual and of the local regulations and directives.
- Before installation, check that the package contents are intact and complete compared to the packing list. Contact SUNGROW or the distributor in case of any damaged or missing components.
- The cable used must be intact and well insulated. Operation personnel must wear proper personal protective equipment (PPE) all the time.
- Any violation could result in personal death or injury or device damage, and will void the warranty.
Safety
The inverter has been designed and tested strictly according to international safety regulations. Read all safety instructions carefully prior to any work and observe them at all times when working on or with the inverter. Incorrect operation or work may cause:
- injury or death to the operator or a third party;
• damage to the inverter and other properties.
Please follow the safety instructions related to the PV strings and the utility grid.
DANGER
Lethal voltage!
- PV strings will produce electrical power when exposed to sunlight and can cause a lethal voltage and an electric shock.
- Only qualified personnel can perform the wiring of the PV panels.
NOTICE
Danger to life from electric shock due to lethal voltage!
- All electrical connections must be in accordance with local and national standards.
- Only with the permission of the utility grid, the inverter can be connected to the utility grid.
Inverter
The icons on the inverter body are as follows.
Disconnect the inverter from all the external power sources before maintenance!
Burn danger due to hot surface that may exceed 60\ °C .
Read the user manual before maintenance!
RCM mark of conformity.
 | Danger to life due to high voltages!Only qualified personnel can open and maintain the inverter. |  |  10 min | Danger to life due to high voltages!Do not touch live parts for 10 minutes after disconnection from the power sources.Only qualified personnel can open and service the inverter. |
| TÜV mark of conformity. | CE | CE mark of conformity.EU/EEA Importer. | ||
 | Do not dispose of the inverter together with household waste. |  | The inverter does not have a transformer. | |
 | Additional grounding point. UKCA mark of con  | |||
 | RoHS labelingThe product complies with the requirements of the applicable EU directives. |  | CMIM-Prüfzeichen. | |
Users may also attach other warning signs as per the requirements of the local standards or installation specifications.
Security Declaration
- For details on the product's network security vulnerability response process and vulnerability disclosure, please scan the QR code on the right or visit the following website: https://en.sungrowpower.com/security-vulnerability-management
- For more information on network security, please refer to the user manual of the communication module or the Data Logger that comes with the product.
EU Declaration of Conformity
within the scope of the EU directives:
• Low Voltage Directive 2014/35/EU (LVD)
• Electromagnetic compatibility Directive 2014/30/EU (EMC)
• Restriction of the use of certain hazardous substances 2011/65/EU and 2015/863/EU (RoHS)
The manufacturer Sungrow Power Supply Co., Ltd, China hereby confirms that the product SG3.0-20RT&SG5.0-20RT-P2 complies with the essential requirements and other relevant provisions of Directives 2014/35/EU, 2014/30/EU, 2011/65/EU, 2015/863/EU. The full EU Declaration of Conformity can be found at https://support.sungrowpower.com/PdfDetail?id=1697881433535078402.
- The communication module that comes with the inverter and the technical parameters of wireless communication are listed in the table below. The model of the communication module actually delivered shall prevail. The EU Declaration of Conformity for the communication module can be found at support.sungrowpower.com.
WiNet-S/WiNet-S2:
Technologie radio WLANI 802.11b/g/n20/n40
| Radio spectrum | 802.11b/g/n | 2412 MHz ~ 2472 MHz |
| 802.11n40 | 2422 MHz ~ 2462 MHz |
Maximum transmitted power ≤ 20 dBm
Technical parameters listed above apply to EU countries only.
Manufacturer:
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. P.R China
For EU only
EU/EEA Importer:
Danger to life from electric shocks due to live voltage
- Do not open the enclosure at any time. Unauthorized opening will void warranty and warranty claims and in most cases terminate the operating license.
- When the enclosure lid is removed, live components can be touched which can result in death or serious injury due to electric shock.
Lethal danger from electric shock due to possibly damaged inverter
- Only operate the inverter when it is technically faultless and in a safe state.
- Operating a damaged inverter can lead to hazardous situations that can result in death or serious injuries due to electric shock.
WARNING
Risk of inverter damage or personal injury
- Do not connect or disconnect the PV and AC connectors when the inverter is running.
- Wait at least 10 minutes for the internal capacitors to discharge after all electric devices are removed and the inverter is powered off.
- Ensure that there is no voltage or current before connecting or disconnecting the PV and AC connectors.
WARNING
All the warning labels and nameplate on the inverter body:
- must be clearly visible; and
- must not be removed, covered or pasted.
CAUTION
Risk of burns due to hot components!
- Do not touch any hot parts (such as the heat sinks) during operation. Only the DC switch can safely be touched at any time.
NOTICE
Only qualified personnel can perform the country setting. Unauthorized alteration may cause a breach of the type-certificate marking.
Risk of inverter damage due to electrostatic discharge (ESD)!
By touching the electronic components, you may damage the inverter. For inverter handling, be sure to:
- avoid any unnecessary touching; and
- wear a grounding wristband before touching any connectors.
DE
Sungrow Power Supply Co., Ltd.
Nr. 1699. Xiyou Road, Hefei 230088. P.R. China
Nur für die EU
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. R. P. Cinese
Solo per l'UE
Importatore UE/SEE: Sungrow Deutschland GmbH
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. P.R. China
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. P.R. China
Alleen voor de EU
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. ChRL
Tylko na eksport do UE
Users may also attach other warning signs as per the requirements of the local standards or installation specifications.
Security Declaration
For details on the product's network security vulnerability response process and vulnerability disclosure, please scan the QR code on the right or visit the following website: https://en.sungrowpower.com/security-vulnerability-management
- For more information on network security, please refer to the user manual of the communication module or the Data Logger that comes with the product.
• PV strings will produce electrical power when exposed to sunlight and can cause a lethal voltage and an electric shock.
- Only qualified personnel can perform the wiring of the PV panels.
ADVERTÊNCIA
Maximum transmitted power ≤ 20 dBm
Technical parameters listed above apply to EU countries only.
Fabricante:
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088.P.R.China
Apenas para a UE
Importador UE/EEE: Sungrow Deutschland GmbH
Balanstraße 59, 81541 München, Alemanha
PERIGO
Sungrow Power Supply Co., Ltd.
No 1699. Xiyou Road, Hefei 230088. P.R. China
Sólo para la UE
Importador UE/EEE: Sungrow Deutschland GmbH
Balanstraße 59, 81541 München, Alemania
PELIGRO
Read the user manual before maintenance!
(1) The images shown here are for reference. The actual quantity is based on delivery.
(2) For countries except Brazil.
(3) For Brazil.
Mounting location / Montageort / Luogo di montaggio / Lieu de montage / Montagelocatie / Miejsce montażu / Monteringsplats / Asennuspaikka / Localização na parede / Local de instalação / Ubicación del montaje / Lugar de montaje / Mecto установki
Installation tools / Werkzeug zur Installation / Strumenti di installazione/ Outils d'installation / Montagegereedschap / Narzędzia montażowe / Installationsverktyg / Asennustyökalut / Ferramentas de instalação / Ferramentas de instalação / Herramientas de instalación / Herramientas para la instalación / Монтажный инструмент
Mounting / Montage / Montaggio / Montage / Montage / Montaz / Montering / Asentaminen / Montagem / Montagem / Montaje / Montaje / Монтаж
Use appropriate mounting hardware for wall type.
The image shown here is for reference only. The actual product received may differ.
Optimizer:
- Please ensure that the optimizer is installed facing the back of the module. Otherwise, the clip may be damaged.
- Do not forcibly bend the clips when installing the optimizer by clips. Otherwise, the clip may be damaged.
- Do not clamp the optimizer into holes in the module frame during installation. Otherwise, the optimizer cannot be removed or the clips may be damaged.
- It is recommended to install optimizers on the same side of modules.
- Do not clamp and remove the optimizer multiple times. Otherwise, the clip may become loose, affecting normal use.
PE / Erdung / messa a terra / Mise à la terre / Aarding / PE / Skyddsjord / PE / EP / PE / PE / Energía potencial / Заземление
AC
It is recommended to use heavy duty conduits when run cables through Cavity walls, or lay out cables with corresponding conduits.
A RCD is not required if either of these two installation methods is adopted according to the local standard AS3000-2018. (For "AU" and "NZ")
For inverter models > 15 kW
DC
If the DC protection cover delivered separately need to be installed on site, please firstly lead the DC cables through the waterproof terminal on the DC protection cover and then assemble the DC connectors.
It is recommended to use heavy duty conduits when run cables through Cavity walls, or lay out cables with corresponding conduits.
A RCD is not required if either of these two installation methods is adopted according to the local standard AS3000-2018. (For "AU" and "NZ")
Optimizer
![graph TD A["Panel 1: Solar Panel"] --> B["PV-"] A --> C["PV+"] B --> D["OUT- OUT+"] C --> E["OUT- OUT+"] D --> F["Panel 2: Solar Panel"] E --> G["Panel 2: Solar Panel"] F --> H["..."] G --> I["..."] H --> J["N: Solar Panel"] I --> K["N: Solar Panel"] J --> L["Out- OUT+"] K --> M["Out- OUT+"] L --> N…](/content/2026/04/603094/images/12de67fb6373d92dde54ae56b0650358a7a46989ea835d0d840fa6e84bc34cf7.jpg)
WLAN
Ethernet
(Cannot be used simultaneously with A1 and B1 terminals for RS485 daisy chain)
COM2
| RSD | NS | DRM | RS485-1 | DO | ||||
| RSD-1 | RSD-2 | NS-1 | NS-2 | D1/5 | D3/7 | R | A1 | NO |
| B3 | A3 | B2 | A2 | D2/6 | D4/8 | C | B1 | COM |
| RS485-3 | Meter | |||||||
| Label. Description | |
| RSD (RSD-1, RSD-2) For inverter emergency stop | |
| NS (NS-1, NS-2) For inverter emergency stop | |
| DRM (D1/5, D2/6, D3/7, D4/8, R, C) | For external Demand Response Enabling Device ("AU"/"NZ")For Ripple Control |
| RS485-1 (A1, B1) | For inverter daisy chain(Cannot be used simultaneously with COM1 port for WiNet-S/WiNet-S2) |
| DO (NO, COM) | External alarm interface, e.g. light indicator and/or buzzerThe external DC voltage should not be higher than 30 V and the current not higher than 1 A. |
| RS485-3 (B3, A3) Reserved | |
| Meter (B2, A2) | If the device is connected to iHomeManager, ensure that the corresponding Smart energy meter interface |
• The connections for Meter (single inverter), DO, NS and DRM are the same. Take meter connection as an example.
B = E + (2\~3) mm
For multi-core multi-strand wire
Inverter RS485 Daisy Chain (≤ 5)
The followings describe the procedure to crimp two wires to the two-wire core end terminal. Other steps are the same as meter connection described previously.
![graph TD A["Logger"] --> B["Ethernet"] A --> C["RS485"] D["PC Network port"] --> E["Meter"] F["Inverter 1 Inverter 2"] --> G["< 10 m"] H["Inverter 2"] --> I["< 10 m"] J["Inverter 5"] --> K["..."] G --> L["..."] I --> L K --> L style A fill:#f9f,stroke:#333 style D fill:#f9f,stroke:#333 style F fill:…](/content/2026/04/603094/images/39529ce067e2cc16f6dc2ba41a73dea4b67482553f4529a20b8d50ab3f669cc9.jpg)
Ripple control
Power on / Ein / Accensione / Allumer / Schakel in / Włącznik / Effekt på / Virta kytketty / Ligação / Ligar / Encendido / Encendido / Включение питания
LED indicator / LED-Anzeigetafel / Indicatore LED / Voyants LED / Led-indicators / Kontrolki LED / LED-indikator / Merkkivalo / Indicador de LED / Indicador LED / Indicador LED / Indicador LED / ЖК-панель
LED indicator LED state Definition
ON The inverter is normally running.
Flashing The inverter is at standby or startup state (not feeding power into the gird).
ON A system fault has occurred.
OFF Both the AC and DC sides are powered down.
More information in the QR code or at http://support.sungrowpower.com/
Brand : Sungrow
Model : SG12RT
Category : Battery charger