BKFDE300145 - Système d'installation électrique au sol HAGER - Free user manual and instructions

Product Type	Residual Current Circuit Breaker (RCCB)
Dimensions (H x W x D)	85 mm x 36 mm x 70 mm
Weight	0.1 kg
Rated Voltage	230 V AC
Rated Current	16 A
Rated Frequency	50/60 Hz
Number of Poles	2
Tripping Characteristics	Type A
Rated Residual Operating Current	30 mA
Breaking Capacity	10 kA
Protection Degree	IP20
Operating Temperature	-25°C to +55°C
Mounting	DIN rail (35 mm)
Material	Thermoplastic
Energy Limiting Class	3
Functions	Overload protection, short-circuit protection, residual current protection, isolation
Maintenance	Clean with dry cloth; no lubrication required
Safety	Do not open; installation by qualified electrician only
Spare Parts	Not user-serviceable; contact Hager support
Reparability	Replaceable unit; no internal repairs possible
General Information	Hager brand; manufactured in Germany

Frequently Asked Questions - BKFDE300145 HAGER

What is the rated current of the Hager BKFDE300145?

The rated current is 16 A, suitable for standard lighting and socket circuits.

Can I install this device myself?

No, installation must be performed by a qualified electrician to ensure safety and compliance with local regulations.

What does the BKFDE300145 protect against?

It provides overload, short-circuit, and residual current protection (RCD) for personal safety against electric shock.

What is the breaking capacity?

The breaking capacity is 10 kA, suitable for residential and light commercial installations.

How do I test the device?

Press the test button (marked 'T') monthly to ensure the RCD function works. The device should trip immediately.

What does the LED indicator mean?

A green LED indicates normal operation; if off or red, the device has tripped or is faulty. Refer to the manual for details.

Can I use this device in a 3-phase system?

No, this model is a 2-pole device for single-phase systems up to 230 V.

What are the dimensions?

The device measures 85 mm x 36 mm x 70 mm (height x width x depth) and fits on a standard 35 mm DIN rail.

Where is the manual located?

The manual can be downloaded from the notice-facile.com website in PDF format.

What type of residual current does it detect?

It is Type A, which detects sinusoidal AC and pulsating DC residual currents.

USER MANUAL BKFDE300145 HAGER

Floor installation systems

Basic manual

Modern office interior with white tile flooring, white desks, and large windows overlooking greenery (no visible text or symbols)

Table of Contents

FAQs 4

Basic knowledge ....18

Basic planning principles ....20

Requirements for installation technology 20

Requirements from building conception 20

Requirements for organisation 20

Requirements for security 21

Installation requirements / construction requirements ....21

Duct systems 22

Screed-covered duct system 22

Screed-flush duct systems 23

On-floor duct system 24

Raised floor installation system 24

Cavity floor installation system 25

Basic principles of screed ....26

Screed structure 26

Screed work 27

Screed types 27

Floor structure 29

Floor structure 50 mm 29

Floor structure 75 mm ....30

Floor structure 105 mm ....30

Information on the floor covering and for the floor layer 31

Information on the floor covering ....31

Information for the floor layer 31

Determining the cable volume 32

Bend radii 33

Cable volume of most common installation cables 34

Power supply and device installation units 36

IP degree of protection 42

IK degree of impact resistance 43

Mechanical/thermal loads 44

Standardisation and testing 45

Erector specifications ....48

Protection against electric shock 48

Mechanical load of cables 48

Separation of different services 49

Fire protection 49

Equipotential bonding 50

Inter-unit working 51

Inter-unit working - Screed work 51

General information for screed layers ....51

Inter-unit working - Floor covering work 51

Inter-unit working - Building cleaning ....51

Sound protection and impact noise ....52

Impact noise reduction for floor installation systems ....52

Appendix 54

Overview of floor installation systems - cable assignment ....54

Reference sources of standards and specifications ....61

FAQs

7 questions - 7 answers

To meet all the requirements during the planning phase, you should get to grips with these 7 questions. This ensures that you will obtain the right duct system solution for your construction project.

The answers to your questions will provide you with the right solution for your construction project. Starting with the right duct system, the screed height, the floor coverings and their care through to the installation units.

Question 1: Which floor installation system is to be used?

☑ Screed-covered floor system
☑ Screed-flush floor system
On-the floor system
☑ Cavity floor system
☑ Raised floor system

Question 2: How is the cable volume calculated?

Cable volume calculation ( d^2 )

Data/communication technology
Multimedia technology
Energy technology

Question 3: How high is the planned floor structure?

☑ Nominal screed thickness, incl. possible insulation layers
√ Thickness of floor covering

Question 4: Which floor covering will be laid?

Parquet
Vinyl
Linoleum
☑ Tiles/granite
Carpet

Question 5: How will the floor covering be cleaned?

Dry/moist cleaned
Wet cleaned

Question 6: What are the maximum loads that can occur?

Standard
Drive-over
Heavy-duty

Question 7: Which supply and installation units are required?

Size
☑ Number of installable devices
Shape
Material

Answer 1: Which floor installation system is to be used?

A distinction is made between 5 standard floor systems. The appropriate floor system sets the course from the very start. Depending on the system, only certain products may be used. Whether this is a screed-covered duct system, which is often used in new buildings, or an on-floor duct system, which is often used during renovations. The rough direction is entirely different. Specific solutions and combination options are available for each system.

Using these aspects, it is possible to make a rough selection of the right duct system.

Screed-covered duct system

3D architectural rendering of a modern building complex with curved walkways and structural elements (no text or symbols visible)

The screed-covered duct system is suitable for all types of screed. No matter whether composite cement, floating screed, flowing screed or, with special precautions, also mastic asphalt / hot floor screed. The screed-covered duct system can be used in residential and functional buildings.

Flush-screed duct systems

3D rendering of a corner wall with plastic components and a curved architectural element (no text or symbols visible)

The screed-flush tehalit.BKB makes energy, data and communication connections available around the room. Besides its adaptability to state-of-the-art technology, it is also open to any form of interior design: It can be assigned with all kinds of dry cleaned floors. Here, the height adjustment, which is accurate to the millimetre, can offer a "smooth" end - whilst the comprehensive range of fittings adapts exactly to any angle.

Architectural floor plan showing structural beams and a curved water channel (no text or labels)

This height-variable system is used anywhere where it is not clear how the "final installation" will be and/or the highest level of flexibility is desired. Duct widths of up to 600 mm allow the duct to be used wherever high volumes of cables occur. The shiny version of the screed-flush duct is used in production halls and in office and administration buildings. Its very low height means that the duct is also suitable for very flat screed heights of 30 mm or more.

On-floor duct system

Interior architectural rendering of a modern room with wall and floor elements (no text or symbols)

industrial buildings.

This duct system is particularly suitable for renovations of old buildings and the modernisation and expansion of building installations. The main areas of use are renovations of office and administration buildings, as well as construction projects requiring the rapid erection of electrical systems on already completed floors. If it is not possible to install underfloor ducts in the screed due to building protections on static or monument protection grounds, then the on-floor ducts are routed on the floors. The robust on-floor ducts are also used in assembly facilities, laboratories or

Raised floor system

Industrial testing setup with a perforated metal panel and connected cables (no visible text or symbols)

Open plan offices or large-area call centres divided up into many computer workstations using partitions and which must remain structured cannot avoid this flexible system. This also applies to computer server rooms constructed with raised floors, which offer the greatest possible flexibility through their construction. In this way, completely networked power and data networks are integrated into showrooms or trade fair stands which are rebuilt according to requirements.

Cavity floor system

Architectural floor plan showing wall and floor structure with wiring and a small component (no text or symbols visible)

In cavity floors, prefabricated lined bodies are laid out on the raw ceiling and then cast with screed. In contrast to raised floors, in which individual plates can be exchanged as required, a cavity floor is a closed screed plate on stilts. In a similar manner to the raised floor, wiring can be designed very flexibly using plug and play systems.

Answer 2: How is the cable volume calculated?

The cable volume is required to define the correct duct size. However, as, in practice, cables can never lay next to each other in a perfectly parallel and space-saving manner, the formula (d)^2 or the diameter squared is used. The ducts should only be 50% full, to leave space for possible refitting later on. This means that the cables can also be pulled through the duct more easily.

In addition, it should be noted that, in this calculation, no floor tanks or outlets which might interrupt the cable path are taken into account.

In practice, power and data cables are routed separately in the duct. Separating webs divided the duct up into multiple compartments. If this applies, then the space requirements must be calculated for each compartment individually.

With stronger current loads of the cables, cable heating should be taken into account. In addition, all the relevant regulations, such as DIN VDE 0100, must also be taken into account.

Answer 3: How high is the planned floor structure?

The height of the planned underfloor system also has a key role to play in the planning and installation of underfloor cable systems. In particular, with screed-covered floors and screed-flush floors, this information is used to include the appropriate elements for height adjustment into the planning and installation. Different products and solutions are used, depending on the height.

In general, the prescribed floor structure specifies the area available for the floor solution.

• Hinged cover with ultra-flat installation depth for a floor structure of 50 mm or more
• Standard supply units with floor covering recesses of 5 mm for a floor structure of 75 mm or more
• Standard supply units with floor covering recess of 12 mm for a floor structure of 100 mm or more
• Stainless steel cassettes for a floor structure of 105 mm or more

Answer 4: Which floor covering will be laid?

Often, the floor covering is specified in a construction project. It is stated whether there will be a carpeted floor, laminate, parquet, tiles, stone, PVC or a linoleum covering. Each covering has a different height. This means that not every covering fits in every installation unit. Three different heights are available here. Supply units are available for smaller covering heights up to 5 mm or up to 12 mm and stainless steel cassettes are available for heights of up to 23 mm.

Close-up of a circular device with a 5 mm scale label on a textured surface (no other text or symbols visible)

PVC coverings are often only 3 to 4 mm thick. For such coverings, and for thin carpets and linoleum, standard supply units with a 5 mm frame height are ideal.

Blue textured surface with a small blue object labeled '32 mm' attached to its top, no other text or symbols visible.

Carpeted floors and laminate generally have a thickness of 8 to 10 mm, whilst some laminate types with adhesive are thicker still. Here, standard frames of 10 mm height are insufficient. Therefore, Hager offers, as the sole provider, standard supply units with a 12 mm frame height. If the frame is too high, then cover inlays of 1 to 2 mm can be inserted to support the floor covering.

Exterior view of a modern office building (no signage)

For coverings such as parquet or stone tiles, Hager can offer stainless steel cassettes with a base recess of up to 23 mm or up to 38 mm, according to the version. Even with very thick floor coverings, this guarantees tidy work without bumps and dips.

Answer 5: How will the floor covering be cleaned?

The cleaning category is aligned to the type of floor covering. Carpeted floors are usually dry cleaned, whilst tiles are normally moist or wet cleaned.

Dry cleaned and "moist cleaned" floors

Floor coverings that can be vacuumed (e.g. carpeted floors) or those which can be wiped over with moist but not wet cleaning devices (e.g. laminate) are combined as “dry cleaned floors”. All the standard supply units, cable outlets and pedestals from Hager can be used on such floors.

Close-up of a vacuum cleaner placed on a carpet with wires and a small rectangular component (no visible text or symbols)

Image 1: Dry cleaned floors

Wet cleaned floors

Floors subject to serious degrees of contamination - such as stone floors in factory halls - must be wet cleaned using liquid cleaning agents. For these “wet cleaned floors”, Hager can offer “water-tight” system components, such as supply units with integrated water stream protection, which is offered in either aluminium or polyamide.

Close-up of a black cylindrical object placed on a metallic circular base on a tiled floor (no text or symbols visible)

Image 2: Wet cleaned floors

Answer 6: Which loads can occur?

Different load requirements occur, depending on the circumstances. In everyday office life, loads of up to 1500 N will generally occur. However, in public buildings, such as airports or stations, this amount is usually incorrect. Daily work with luggage carts, cleaning machines or mobile scaffolding increases the load. The ability to be driven on is often also a condition in car or other showrooms. In assembly halls or warehouses, the load is frequently greatly increased by loaded forklifts or trucks.

1500 N Standard

3D rendered image of a mechanical component pressing a square component on a textured surface (no text or symbols visible)

Image 3: 1500 N Standard

All the supply units and stainless steel cassettes are designed according to the standard for a 1500 N load. These include all the supply units, all the stainless steel cassettes, screed-flush ducts, on-floor ducts, etc. This is fully sufficient for the normal loads of everyday office life.

7500 N drive-on

Close-up of a metallic circular component with concentric rings placed on tiled floor (no text or symbols visible)

Image 4: 7500 N drive-on

VANR12 supply unit

The VANR12 supply unit is designed for increased loads. The supply unit is made of aluminium and can be driven over in a car.

20000 N heavy duty

Close-up of a car's wheel connected to a power plug on tiled floor (no visible text or symbols)

Image 5: Heavy duty cassettes

The EKSQ405xx heavy duty cassette is used in car showrooms. This stainless steel cassette is supported by a solid heavy duty frame, thus offering sufficient stability for extremely high loads.

Answer 7: Which installation units are required?

Supply and installation units

To supply commercial buildings in a sensible manner, it is wise not to cut corners - with regards to both energy and also information and data. The electraplan supply and installation units. VE-EEs can cover any customer requirements.

They are compatible with almost any electraplan floor installation system and can be equipped with six to twelve connector boxes, according to requirements. The supply units are available in a range of materials, shapes and colours.

Each device casing can be equipped variably: With protective contact sockets or support bar devices for network and multimedia technology.

Polyamide supply unit

Exterior view of a modern cylindrical mechanical or architectural component with mounting brackets (no text or symbols visible)

The standard material for supply units is polyamide. Polyamide frames can withstand a load of up to 1.5 kN (DIN specification) - ideal for classic floor use. Large selection for use with 6, 9, 10 or 12 sockets, for example:

Aluminium supply unit

Exterior view of a mechanical component with mounting holes and ventilation slots (no text or symbols visible)

In conjunction with high-quality floor coverings - e.g. stone tiles - it is wise to use aluminium supply units. They are not only more stable, but also provide a more elegant floor appearance. Hager can offer aluminium units that can withstand loads of up to 7.5 kN for strong loads in public buildings - e.g. showrooms, stations or airports. Sizes: 2 sizes for use with 6 or 12 sockets, for example.

Stainless steel supply units

Exterior view of a modern office building (no signage)

Stainless steel supply units are particular robust:

They correspond to the DIN load specifications of 1.5 kN. As a heavy duty cassette, they can even withstand loads of up to 20 kN (see Page 48). A further advantage: Thanks to their thin edge, they are barely noticeable in the floor - if they are, then its due to their fine appearance.

Sizes: 2 sizes for use with 6 or 12 sockets, for example.

Basic knowledge

Important note

This document explains the relevant principles for the installation of floor installation systems and routing cables in these systems.

The contents of this document are based on the currently applicable rules and regulations as well as our own test findings. No generally applicable legal obligation shall be derived from the contents of this document.

Basic planning principles

Overhead view of four people gathered around a white table with blueprints and a laptop, no visible text or symbols.

Image 6: Planning

Requirements for installation technology

When planning and selecting the floor installation system, the following points must be observed with regard to the installation system requirements:

– Number of services (power, communication, data, multimedia)
– Filling factor of the electrical installation ducts
- Cable bend radii
- Reserve
- Concurrence factors
- Intended for indoor areas

Requirements from building conception

The following preconditions are to be taken into account on account of the use profiles of the individual rooms or the overall building:

• Type of room (dry or wet)
  – Floor covering version (dry or wet cleaned)
  – Thickness of the floor covering
• Type and version of the screed
• Traffic loads
  – Ambient temperature (interior, e.g. underfloor heating)

Requirements for organisation

Areas of use and the specifications of the customer regarding installation technology (power, data, communication, multimedia) must also be taken into account during the planning of a floor installation system:

• Flexibility of use (e.g. light adjustment to changing use specifications)
  – Easy changing of device equipment
• Use of fixed or portable installations

Floor installation systems

Basic manual

Requirements for security

Security and unauthorised access by third parties play an increasingly important role in the planning and selection of a floor installation system. Therefore, in data infrastructure areas (e.g. computer centres), particular attention must be placed on security, which must be taken into account during planning.

Installation requirements / construction requirements

To be able to begin with the installation of a floor installation system, the following conditions must be fulfilled:

- Approved and dimensioned routing plan, which specifies the position of all installation parts

– Project parts list with the materials to be used

– Information on the floor structure and floor covering

- A swept and approved raw construction ceiling in accordance with DIN 18 202 (tolerances in building construction)

– Cutting check data as reference point for the appropriate screed height

– Data on the traffic loads, fire protection measures and the impact noise

- Installation area must be free of rubble and outside materials

– There must be guaranteed protection against the influence of weathering and moisture

- Details on the minimum installation depth and floor cleaning of the installation units must be available

Duct systems

A distinction is made between 5 standard floor systems. The appropriate floor system sets the course from the very start. Depending on the system, only certain products may be used. Whether this is a screed-covered duct system, which is often used in new buildings, or an on-floor duct system, which is often used during renovations, the rough direction is entirely different. Specific solutions and combination options are available for each system.

The following points, defined in the planning phase, are of decisive importance for the correct selection of the right duct system:

– Building type (office/administrative building, car showrooms, etc.)

– Building substance (new building, old building with/without protection)

– Building structure (single or open plan offices)

- Use practices (flexible for changes of use)

Screed-covered duct system

Architectural model of a modern building complex with curved walkways and structural elements (no text or symbols visible)

Image 7: electraplan.UK

The electraplan.UK floor installation system is quick and easy to install and is suitable for virtually all types of screed. The underfloor duct and floor boxes made from galvanised sheet steel, which offers optimal protection against corrosion, are secured to the bare floor. Since the upper sections of the basic profile are detachable, the cables can be placed into the duct from above and do not need to be pulled in. The screed is administered flush with the upper edge of the floor boxes such that the underfloor duct is covered. See catalogue

Screed-flush duct systems

3D rendering of a curved wall assembly with metal brackets and wiring, no visible text or symbols

Image 8: tehalit.BKB / tehalit.BKG

The screed-flush tehalit.BKB makes energy, data and communication connections available around the room. Besides its adaptability to state-of-the-art technology, it is also open to any form of interior design: It can be assigned with all kinds of dry cleaned floors. Here, the height adjustment, which is accurate to the millimetre, can offer a “smooth” end - whilst the comprehensive range of fittings adapts exactly to any angle.

Architectural structural components including L-shaped beams and a curved beam, shown in grayscale (no text or symbols)

Image 9: electraplan.BK

This height-variable system is used anywhere where it is not clear how the “final installation” will be and/or the highest level of flexibility is desired. Duct widths of up to 600 mm allow the duct to be used wherever high volumes of cables occur. This screed-flush duct is used in a shiny version in production halls, but also in office and administrative buildings with duct covers with floor covering stuck on. Its very low height means that the duct is also suitable for very flat screed heights of 30 mm or more.

On-floor duct system

Interior architectural rendering of a modern room with wall-mounted fixtures and a curved staircase (no text or symbols visible)

Image 10: electraplan.AK

For renovated properties or listed buildings, an on-floor duct is the perfect solution. Thanks to the range of moulded parts available for it, the electraplan.AK system is easy to assemble. Blind covers are screwed to the lower sections of the duct; these blind covers are angled towards the floor and flooring can be laid over them. Installation apertures in the cover allow installation units, supply units, floor connection columns or on-floor pedestals to be installed. See catalogue

Raised floor installation system

Experimental setup with a perforated panel, connected tubing, and three metal components (no visible text or symbols)

Image 11: electraplan.DB

Open plan offices or large-area call centres divided up into many computer workstations using partitions and which must remain structured cannot avoid this flexible system. This also applies to computer server rooms constructed with raised floors, which offer the greatest possible flexibility through their construction. In this way, completely networked power and data networks are integrated into showrooms or trade fair stands which are rebuilt according to requirements.

Cavity floor installation system

Interior view of a modern kitchen or kitchen area with curved ceiling and wall-mounted electrical components (no visible text or symbols)

Image 12: electraplan.HB

In cavity floors, prefabricated polystyrene or plastic shells are laid out on the raw ceiling and then cast with screed. In contrast to raised floors, in which individual plates can be exchanged as required, a cavity floor is a closed screed plate on stilts.

In a similar manner to the raised floor, wiring can be designed very flexibly using plug and play systems.

Basic principles of screed

Screed structure

The screed structure is a key precondition for the correct installation of underfloor systems. With screed-covered systems, it is essential that the screed thickness above the duct corresponds to the value stated in the standard, in order to avoid crack formation.

The screed is located above the load-bearing storey ceiling or above the floor plate and beneath floor covering.

The nominal screed thickness is dependent on the insulating layer, the individual load and the screed type. Refer to DIN EN 13813 for more information on the nominal screed thickness.

The minimum nominal thickness ^1 is regulated according to the hardness class (DIN EN 13813) for perpendicular loads ≤ 2 kN/m ^2 .

Under some circumstances, chemical or thermal loads may occur, which require additional measures to protect the installed system.

The electraplan.BK screed-flush duct systems and the BKSA underfloor sockets only receive their load capacity for correct use through being joined with the adjacent screed.

For this reason, the following points are important and must be observed:

• After the duct system has been permanently installed on the raw concrete, then the system may no longer be walked on or subjected to similar loads
• The duct system must form a composite system with the adjacent screed

With electraplan.BK, the following points must be particularly observed:

• The side profiles need to be supported with screed, in order to achieve a good static support in the screed. The screed is to be carefully worked and compacted
• The opened duct system may neither be walked on nor subjected to similar loads. Measured for the necessary protection must be taken in agreement with the construction management

1) For increased use and surface loads, appropriately increased minimum nominal thicknesses shall apply

Image 13: General floor structure

(1) Raw ceiling / floor plate
(2) Thermal insulation (e.g. polystyrene)
(3) Impact noise insulation
(4) PE film
(5) Cement screed with underfloor heating
(6) Floor covering

Screed work

Ducts and accessory parts only obtain their full load capacity for correct use through the fixed composite with the screed. For this, the following preconditions are of importance:

- The duct system must be sealed before screed is applied

- All the system elements are permanently anchored on the raw ceiling

- The installed duct system may neither be walked on nor subjected to any other loads

– Any hollow spaces created must be filled with screed

- The duct system may only be subjected to loads after the screed has hardened and must be blocked off prior to this

– Screed deformations and shrinkages must be observed in advance

With a screed-covered duct, it is essential that the screed thickness above the duct corresponds to the value stated in the standard, in order to avoid crack formation.

The nominal screed thickness is dependent on the insulating layer, the individual load and the screed type. For more detailed information on screed types and the nominal screed thickness, refer to DIN EN 13318, DIN EN 13813, DIN EN18560. Here, under certain circumstances, chemical or thermal impacts may occur, which may require additional measures to protect the installed system.

Screed-flush ducts (BKF/D and BKW/D) and floor boxes (UDHx, UDBx, UDSx) must be levelled to the intended height before screed laying (construction side height line). The screed layer should check the levelling height.

Smooth and compress screed well on the screed-flush ducts and floor boxes (no insulation strip). Only this achieves the required load capacity.

The BKB/BKG screed-flush duct system is decoupled from the screed using an insulating strip, as it could otherwise lead to damage to the screed and/or floor covering.

Screed types

When selecting the screed structure, it is necessary to clarify which screed mortar types are possible for the application. There are difference types of screed mortars.

Flowing screed:

Before screed application, these tasks must be observed and completed:

- Duct system and boxes are to be weighed down --> Floating of the screed

- Duct system and boxes are to be sealed against the ingress of flowing screed and protected on the construction side

– Side profiles and film must be jacketed with sufficient screed.

- Avoid cavities

Aggressive screed:

When using aggressive screed types, all the metal parts must be insulated during construction using a chloride and alkali-free bitumen layer or other suitable means (VOB Part C).

Corrosion:

Corrosion on metallic underfloor components is reduced to a minimum when

- The maximum moisture content of screeds corresponds to DIN EN 1264-4.

- Underfloor ducts are ventilated sufficiently for drying.

Floor installation systems

Basic manual

:hager

Hot floor screed:

Screed-flush duct systems and boxes may not come into direct contact with the hot screed mass. With film lining, there must be an approx. 10 cm-thick layer of cement screed, for example, by the components for heat insulation. With metal lining and floor troughs, waterproofed corrugated card, for example, can be used for insulation. Screed-covered ducts must be protected against the hot screed mass with 2 - 3 layers of waterproofed corrugated card.

Avoid cavities! Hager is not liable for any damaged cause by improper installation on the duct system or the floor box in conjunction with hot screed!

Expansion pressure of the screed plate:

According to the size of the screed plate and the composition of the screen, it is possible that the boxes may press against the electraplan.BK duct whilst the screed is hardening. For this, Hager can offer a matching self-adhesive foam rubber strip (BKZM203), which is fitted in the upper profile area, in order to reduce the expansion pressure of the screed plate on the duct. The use of the foam rubber strip must be agreed with the screed layer.

Floor structure

A decisive criterion in the correct selection is the floor structure. The screed height specifies the amount of play for the underfloor installation. Different products and solutions are used, depending on the height. It is ever often the case that the screed height is even thinner for reasons of cost. Hager can offer a range of finished solutions for this. However, should the screed height be extremely low, then special, project-related special solutions can be provide assistance here.

Image 14: Floor structure

Floor structure 50 mm

3D rendered diagram of a rectangular structure with colored blocks and a 50mm scale indicator (no text or symbols beyond the scale)

The two hinged covers KDQ08x and KDE04x were developed specially for the requirements, in which only a screed height of 50 mm or more is available.

Thanks to their horizontally arranged socket outlets in the GBES2x device casing, the hinged covers are suitable anywhere where the screed height is only very low. Special solutions can also be used to install data technology in the two hinged covers.

Floor structure 75 mm

3D rendering of a mechanical component with internal structure, labeled '75mm' at bottom (no other text or symbols)

From a screed height of 75 mm, standard supply units with device carrier of type GTVR400, GTVR300 can be used for socket outlets or GTVD300, GTVD200 for data technology.

Here, a large selection of sizes and combination options are available.

Exterior view of a modern office building (no signage)

Floor structure 105 mm

Stainless steel cassettes can be used with floor structure heights of 105 mm or more. The stainless steel cassettes can be equipped with the standard device carriers in the same way as the supply units.

Here too, there is a large selection of sizes and combination options. If a higher load is required, the heavy duty variant is available in the same sizes.

Information on the floor covering and for the floor layer

Information on the floor covering

When selecting the floor covering materials, it should be noted that floor installation systems are subject to the impacts of payloads and must be classified using testing loads of 500 N up to 20,000 N, in accordance with DIN EN 500 85.

In so doing, dynamic bending of up to 6 mm and residual deformations of up to 3 mm shall not be considered faults. Evenness dimensions for finished floors can be found in DIN 18202 Tab. 3 Line 3.

Self-carrying layer thicknesses for facing concrete, artificial resin, mastic asphalts, as well tiles or natural stone can therefore prevent later crack formation of the covering with changing dynamic loads.

Even small bends can cause damage to thin, hard floor coverings, such as tiles. Thick floor coverings, such as granite plates, increase the load capacity of the underfloor system, producing a more beneficial load distribution.

Information for the floor layer

The floor covering, carpet, tiles, laminate, etc. to be laid must be installed correctly according to VOB Part C/DIN 18352, DIN 18353 and DIN 18365. In addition, possible trip points must be avoided using suitable measures, in accordance with the Workplaces Ordinance ArbStättV ASR A1.5/1.2 Floors of the German Federal Institute for Occupational Safety and Health.

Preconditions for laying floor coverings

Before the floor covering can be laid, the following conditions must be fulfilled:

• Dust and dirt must be removed from the floor ducts and universal floor boxes, in order to improve the adhesion of the floor coverings.
• Coverings made of wooden materials for covers must be treated on both sides, so that they do not warp. With single-sided adhesion, use double-sided carpet tape.
• With many wooden materials, it is wise to plan for expansion joints, which compensate for expansion and also shrinkage. These are then located, for example, along the side walls of floor ducts and on outer frames of cassettes.
• With floor coverings, observe the course of the surface structure.
• Long-tufted floor covers can get in the way when inserting the duct covers.

Laying floor covers on BKB / BKG ducts

When laying floor coverings on BKB and BKG ducts, particular attention must be placed to these two points:

• With hard floor coverings, such as wood or tiles, expansion joints must be planned for.
• With floor coverings that tend to fray, the edges should be sealed.

Laying floor covers on BKF(D) / BKW(D) ducts

• A covering joint cover (BKZBSA7011) should be preferred to the covering joint edge for lightly fraying textile floor coverings. These are available in 2.4 m lengths.
• Use the cut floor covering to lay the duct covering.
• Work hard floor coverings, such as wood or tiles, up to the inner side of the plastic profile.
• With hard floor coverings, such as wood or tiles, expansion joints must always be planned for.
• A PVC floor covering can be welded to the covering joint edge.

Special features for cassettes with covering joint edge

• Work hard floor coverings, such as wood or tiles, up to the cassette which has already been inserted. Always plan for an expansion unit to the supply unit.
• With hard coverings, an expansion joint should also be planned in the cover flap.

Determining the cable volume

A key point in the selection of the correct trunking is the cable volume, i.e. the quantity of cables that must be routed in the trunking. As cables cannot usually be routed in an absolutely straight line on account of their properties (mostly sold from reels), cables can thus not be located close together and in parallel in the duct system.

Image 15: Cable volume

To calculate the cable volume, not only the cable diameter must be used as a basis, but the formula (d)^2 must be included as a basis for calculation.

3D illustration of a cable with colored insulation layers (no text or symbols)

Image 16: Determining the cable volume

On the next page, we have listed the space requirements/duct cross-section for the most common duct types.

The listed values are average values, which can vary from manufacturer to manufacturer.

Refer to the manufacturer's data for the exact values.

Use the following table for the correct selection of the duct size. In addition, these factors from the current DIN/VDE standards must be observed:

• Usable cross-section of the duct
• Filling factor
• Heating up of the routed cables
  – Separation of heavy and weak current
• Bend radii

Art. number Art. designation Width		[mm]	Height min [mm]	Height max [mm]	Duct cross section [cm^2] ^2	Number of cables (3 x 1.5 mm ^2 ) ^3
AKU1500401 On-floor duct base 150 40 X 60 24
BKF400105	On-floor duct, screed-flush with the film	416 105	150 540 223
BKW200060	On-floor duct, screed-flush with the trough	216 60	100 88 36
BKFD150065	On-floor duct, screed-flush with the film/sealing option	170 65	110 121 50
BKWD200090	On-floor duct, screed-flush with the trough/sealing option	220 90	130 143 59
BKB25085	Screed-flush floor duct with brush	250 85	X 212 45
BKG30060 Screed-flush floor duct, closed 300		60 X 154 16
UK340483	Underfloor duct, 3-compartment, screed-covered	340 48	X 163 65
^2) Values are rounded		^3) Values are rounded / duct assignment of 50 %

Table 1: Duct size/duct cross-section/number of cables

i Further details on Table 1 can be found in the Appendix.

Bend radii

Bend radii are dealt with in the standard VDE 0298 (Part 3) and must be complied with when routing cables in floor installation systems.

Cable volume of most common installation cables

	Jacketed cable, rigid
Designation	External diameter [mm]	Bending radius	Cable volume [cm2]
NYM-J 3G1.5 8.4 4xD 0.71
NYM-J 3G2.5 9.6 4xD 0.92
NYM-J 3G4 11.3 4xD 1.28
NYM-J 3G6 12.8 4xD 1.64
NYM-J 3G10 14.7 4xD 2.16
NYM-J 3G16 19.0 4xD 3.61
NYM-J 5G1.5 10.0 4xD 1.00
NYM-J 5G2.5 12.0 4xD 1.44
NYM-J 5G4 14.0 4xD 1.96
NYM-J 5G6 15.5 4xD 2.40
NYM-J 5G10 19.5 4xD 3.80
NYM-J 5G16 23.4 4xD 5.48

Table 2: Cable volume, jacketed cable, rigid

	Jacketed cable, flexible
Designation	External diameter [mm]	Bending radius	Cable volume [cm2]
H05VV-F 3G1.5 8.2	3xD 0.67
H05VV-F 3G2.5 9.8	3xD 0.96
H05VV-F 5G1.5 10	2 3xD 1.04
H05VV-F 5G2.5 13	3xD 1.69

Table 3: Cable volume, jacketed cable, flexible

The data for the external diameter and cable volume is estimates and is rounded. Refer to the manufacturer's data for exact details.

		IT data cables
	Designation		External diameter [mm]	Bending radius	Cable volume [cm2]
Cat 5e	1x4xAWG 22/7	shielded	6.5 4xD 0.42
Cat 6	4x2xAWG 23/1	shielded	7.4 4xD 0.55
Cat 6	4x2xAWG 23/1	unshielded	6.4 4xD 0.41
Cat 6a	4x2x AWG 23/1	U/UTP	6.4 4xD 0.41
Cat 6a	4x2x/ AWG 23/1	U/FTP	7.2 4xD 0.52
Cat 6a	4x2x/ AWG 23/1	F/FTP	7.5 4xD 0.56
Cat 6a	4x2x/ AWG 23/1	S/FTP	7.4 4xD 0.55
Cat 7a	4x2x/ AWG 22/1	S/FTP	8.6 4xD 0.74
Cat 7a	4x2x AWG 26/7 flex	S/FTP	5.8 4xD 0.34
Cat 6	2x(4x2xAWG 23/1)	shielded	7.4 x 15.0 4xD 1	1.10
Cat 6	2x(4x2xAWG 23/1)	unshielded	6.4 x 12.8 4xD 8	1.19
Cat 6a	2x (4x2x AWG23/1)	U/FTP	7.4 x 15.0 4xD 1	1.10
Cat 6a	2x (4x2x AWG23/1)	F/FTP	7.5 x 15.2 4xD 1	1.40
Cat 6a	2x (4x2x AWG23/1)	S/FTP	7.4 x 15.0 4xD 1	1.10
Cat 7a	2x (4x2x AWG22/1)	S/FTP	8.6 x 17.5 4xD 1	5.05

Table 4: Cable volume, data cables

	Fibre optic cables
		External diameter [mm]	Bending radius	Cable volume [cm2]
Internal cables 1 x 6 6.5 15xD 0.42
	1 x 8 6.5	15xD 0.42
	1 x 12 6.5	15xD 0.42
	1 x 24	7	15xD 0.49
	2 x 12 8.3	10xD 0.69
	4 x 12 8.6	10xD 0.74
	6 x 12 8.6	10xD 0.74
	8 x 12 9.9	10xD 0.98
	12 x 12 1	1.4	10xD 1.30
Duplex cables	2 x 1	5.6 x 3.2	5xD	1.79

Table 5: Cable volume, fibre optic cables

The data for the external diameter and cable volume is estimates and is rounded. Refer to the manufacturer's data for exact details.
Further details on the duct area and cable volume can be found in the "Appendix"

Power supply and device installation units

Supply units VQ/VE/VR

The supply units are the tried-and-trusted solution for office installations with carpeted floors. They are available in plastic or metal. The solution is not connected to the substrate, but is clamped to the UDB floor box or directly onto the screed using the universal fastening claw.

Simple diagram of a rectangular device with a horizontal line and cable, placed on a textured gray surface (no text or symbols)

Metallic electronic device with open case and internal components, placed on a concrete floor (no visible text or symbols)

Supply units
Forms
Nominal sizes Q12, R12, R10,E09, Q06, R06,
Number of socket outlets	12,10,9,6
Floor covering depth 5 mm, 12 mm
Version Blank, cable outlet
Minimum installation depth	60 mm, 75 mm, 82 mm
Material Plastic, stainless steel
Colours RAL 7011, RAL 9005, stainless steel

Table 6: Overview of supply units

Stainless steel cassette EKQ/EKR/EKSQ/EKSR

The cassettes can be levelled to be flush with the height of the floor and can be completely decoupled from the socket base. Cassettes are particularly suitable for floor coverings like tiles or parquet. Various versions are available for dry/moist and wet cleaned floor coverings. The stainless steel cassettes offer continuous quality and also look attractive.

Levellable stainless steel cassettes for dry or moist cleaned floors are available in two versions. The minimum installation depth from the top edge of the finished floor is 100 mm for the blank stainless steel cassette and between 105 and 115 mm for stainless steel cassettes with device casing. The device casings can be lowered in stages down to 18 mm and a mounting device for a locking extension is possible.

Close-up of a tiled floor with a black cable and a small electronic device attached to the surface (no text or symbols visible)

Metallic open electrical enclosure with internal compartments and mounting base, placed on a tiled floor (no text or symbols visible)

Stainless steel cassette EKQ/EKR/EKSQ/EKSR
Forms
Nominal sizes Q12, R12, Q06, R06,
Number of socket outlets	12.6
Floor covering depth 23 mm, 38 mm
Version Blank, cable outlet, cone
Minimum installation depth	100 mm, 105 mm, 115 mm
Material Stainless steel
Colours Stainless steel

Table 7: Overview of stainless steel cassettes

Wet-cleaned supply units VANR

Close-up of a circular metal plate with a black central component and two wires attached, placed on a tiled floor (no text or symbols visible)

The VANR wet-cleaned supply units are suitable for greater loads, such as car showrooms, and especially for floor coverings such as tiles or stone floors. The supply units are made of aluminium and are available with various cover versions.

Wet-cleaned supply unit VANR
Forms
Nominal sizes R12, R02
Number of socket outlets	12/6
Floor covering depth 3	mm, none
Version Tube
Minimum installation depth	90 mm
Material Aluminium
Colours Aluminium, Aluminium/RAL9005, Aluminium/Al-uminium

Table 8: Overview of wet cleaned supply units

UD floor box set UDKPQ

Exterior view of a wooden floor with exposed brick and concrete panels (no text or symbols)

The UD floor box set series is supplied as a complete installation unit. The installation unit consists of a floor box as a screed lining and either a stainless steel cassette or supply unit for device installation. The individual elements for device installation are included in the scope of delivery. The floor box is installed directly on the raw concrete and connected with flexible installation tubes. In addition, if necessary, the floor tank can be combined individually from the individual parts and assembled on the construction site.

UD floor box set
Forms
Nominal sizes Q06
Number of socket outlets	6
Floor covering depth 5	mm, 23 mm
Version Cable outlet
Minimum installation depth	95 mm, 105 mm
Material Plastic/stainless steel
Colours Stainless steel, RAL 7011, RAL 9005

Table 9: Overview, UD floor box set

Floor socket outlets BSR02

Close-up of a circular component with black wires attached to a tiled floor (no text or symbols visible)

The BS floor socket outlets are particularly suitable where aesthetics, a high load capacity and versatile functionality are required.

Handling is both safe and simple: Insert the pipelines into the installation space. The installation space is closed with a cover.

The installation box of the floor socket outlets is pre-equipped with two sockets outlets. Next to the socket outlets, there is space for a maximum of two connection sockets for network applications.

Floor socket outlet BSR02
Forms
Nominal sizes R02
Number of socket outlets	2
Floor covering depth None
Version Cable outlet, cone
Minimum installation depth	86 mm
Material Plastic, die-cast zinc
Colours Old copper, old brass, silver, RAL 7011, RAL 9005

Table 10: Overview, floor socket outlet BS

Hinged cover for flat floor mounting KDQ/KDE

Simple diagram of a rectangular device with wires attached, placed on a textured surface (no text or symbols)

Special solutions are required for low assembling heights. The KDQ/KDE series contains hinged covers special for very flat floor mountings.

With the help of a special socket outlet GBExx, this series can allow power supplies, even with a floor mounting of 50 mm of more.

Supply units
Forms
Nominal sizes Q08, E04
Number of socket outlets	8/4
Floor covering depth 5	mm, 8 mm, 12 mm
Version Blank, cable outlet
Minimum installation depth	50 mm, 60 mm
Material Plastic
Colours RAL 7011, RAL 9005

Table 11: Overview, hinged cover for flat floor structure

IP degree of protection

The IP degree of protection of floor installation systems is tested and categorised according to EN 50085-2-2 and the type of floor care according to EN 60529. Floor installation systems are only intended for use in interior areas.

The supply unit is tested in its used and unused states to determine the degree of protection. All the duct systems and supply units must fulfil at least the IP 20 degree of protection in the used and unused states.

In addition to the categorisation of the IP degree of protection, with wet cleaning, it must be ensured that, in the used state, all the openings through which cables exit must be at least 10 mm above the floor surface.

The floor covering cleaning type - dry, moist, wet - is the decisive factor in the selection of the suitable supply unit.

Dry cleaning

Dry cleaned floors are primarily textile floor covers, which are cleaned by sucking up the dirt (with small amounts of liquids or completely without). Should a cleaning solution be used, then it must be dosed as low as possible, in order to prevent puddle formation or the floor covering being soaked through.

Moist cleaning

Smooth floor coverings such as linoleum, PVC, laminate, parquet or polished stone floors fulfil the requirements for moist care of the floor covering. The building cleaning trade defines this type of floor covering as a manner of binding dust with moistened or prepared cleaning textiles.

Wet cleaning

Wet cleaning is primarily used with stone coverings, tiles, ceramic floors, linoleum and PVC. This type of cleaning removes particularly tough and sticky contamination. In so doing, as much cleaning liquid is applied in the first cleaning operation with cleaning textiles as is required to soften contamination and release it. In a second operation, this liquid is wiped up again, together with the contamination, using cleaning textiles.

Image 17: Arrangement of IP code

Component Digits or letter Meaning for the protection of the resource			Meaning for the protection of people
Code letters IP - -
First code digit Against the ingress of solid foreign bodies			Against access to dangerous parts with

Table 12: Components of the IP code and their meaning

IK degree of impact resistance

The IK code according to (DIN) EN 50102 is a dimension for knock and impact loads. The IK code specifies the maximum mechanical load of housings of electrical resources/equipment.

Mechanical/thermal loads

Mechanical and thermal loads (load) are forces impacting on the floor installation duct system from outside. With improper installation and use, mechanical forces can cause deformations and destruction. Thermal forces, cause by excessive sunlight and/or heated screeds, cause the installed materials to expand. This can lead to crack formation.

Loads and their impacts on installation systems

Floor installation duct systems are exposed to the traffic loads typical for the building. They must withstand the loads occurring at the place of use and, in so doing, maintain their function. The loads can be triggered by different factors:

• Being walked over by people
• Stands of office furniture
• Loads from vehicles and means of transport

The load is applied directly to the floor or the entire ceiling construction. This means that the load also has a direct influence on the installation floor installation systems.

Standardisation and testing

Standardisation

The EN 50085 series of standards specifies the general requirements for electrical installation duct systems. In particular, Part 2-2 describes the requirements for floor installation systems and took effect in July 2009.

The standard is divided up into two sections:

– Erector specifications

The electrical installation engineer is usually responsible for compliance with the requirements described in the erector specifications.

– Device testing specifications

The device test specifications specify the testing criteria of the products/devices. The manufacturer of the products/device is responsible for compliance with it.

Device testing specifications

- Define the function of the product/device

- Define the load capacity of the product/device

- Define the area of use of the product/device

- Are primarily responsible for the safety of the product/device (e.g. protection against electric shocks)

Classification of floor installation systems

EN 50085-1, as a general section for electrical installation duct systems, and EN 50085-2-2, as a system-specific section for floor installation systems, prescribe a classification of the products.

This standardises product properties across Europe. For the first time, a standard for installation systems has also been given an optional load test for vertical loads that impact over a large area (heavy duty).

Classification according to EN 50085-1

6.1 Based on material

6.2 Based on impact resistance

6.3 Based on temperature

6.4 Based on resistance to flame propagation

6.5 Based on electrical conductivity

6.6 Based on electrical insulating properties

6.7 Based on degrees of protection afforded by housing/casing in accordance with EN 0529:1991

6.8 Based on protection against corrosive or contaminated substances

6.9 Based on fastening type for system duct cover

6.10 Based on electrical protection separation

Classification according to EN 50085-2-2

6.101 Based on type of floor care

6.102 Based on resistance to vertical loads applied to a small area ( +/-13 mm)

6.103 Based on resistance to vertical loads applied to a large area ( +/-130 mm)

Table 13: Classification according to EN 50085

Testing

Load testing of electrical installation duct systems

Electrical installation duct systems for electrical installations must conform with the standard (DIN) EN 50085-2-2.

The standard states that electrical installation duct systems must possess sufficient mechanical stability.

Load capacity for screed-flush duct systems (BK) and their installation units

(DIN) EN 50085-2-2 defines load classes for two applications.

Tests are carried out according to:

- 6.102 with a stamp (∅ 13 mm) for standard applications (Image 18, left)

- 6.103 with a plate (∅ 130 mm) for high loads (Image 18, right)

Image 18: Test die (left) / test plate (right)

Testing Load class (DIN) EN 50085
Standard application (tested with test die 13 mm)	6.102.1 500 N
	6.102.2 750 N
	6.102.3 1000 N
	6.102.4 1500 N
	6.102.5 2000 N
	6.102.6 2500 N
	6.102.7 3000 N
High load (tested with a test plate ∅ 130 mm)	6.103.1 2000 N
	6.103.2 3000 N
	6.103.3 5000 N
	6.103.4 10000 N
	6.103.5 15000 N

Table 14: Load classes according to (DIN) EN 50085-2-2

The testing of the floor installation systems with high load requirements may be dealt with in the standard (DIN) EN 500085-2-2, but the bending during the test (6 mm) permitted in the standard and that after the test ( ≤ 3 mm) is not practical. Bending of this magnitude inevitably leads to damage to hard floor coverings (e.g. tiles).

Floor installation systems

Basic manual

:hager

Load capacity of screed-covered floor installation systems

Screed-covered duct systems are only subjected to a load during the installation phase. After this, ducts are “protected” by the screed layer and the traffic loads are distributed across the screed.

In general, it is considered that all screed-covered duct systems must be constructed in such a way so as to be stable enough to withstand the loads occurring on the construction site during storage, transport and processing.

Erector specifications

The erector specifications according to DIN VDE describe a wide range of points, which the electrician must observe and comply with during the construction and installation of the floor installation systems.

The erector specifications are particularly important for:

– Safety (protection against electric shock)
– Maintenance of function - function maintenance
– Electromagnetic compatibility
- Fire protection

The following section explains some of the key points from the erector specifications:

Protection against electric shock

For the erection of a cable system with electrical installation duct systems, multiple standards from the VDE 0100 series are important, in particular:

• DIN VDE 0100-410:2018-10, which describes the protection measures for protection against electric shock, as well as
  – DIN VDE 0100-520:2013-06, which describes the selection and erection of cable systems.

Electrical installation duct systems are a component part of the cable system (Section 520.3.1 in DIN VDE 0100-520) and thus of the electrical installation. They are thus not covered by Section 411.3.1.2 of DIN VDE 0100-410.

In Section 410, DIN VDE 0100-410 refers to DIN EN 61140 (VDE 0140-1), which, as a basic safety standard, describes the shared requirements for protection against electric shock for electrical systems and resources. Accordingly, the basic rule of protection against electric shock is that dangerous active parts may not be touchable and touchable, electrically conductive parts, may not become dangerous active parts, neither under normal conditions, nor under conditions of individual errors.

In addition, it describes that safety measures against electric shocks must consist of a suitable combination of two independent protective measures - of a basic protection measure and an error protection measure.

In a cable system, a basic protection measure would typically be basic insulation (e.g. wire insulation) or a protective housing.

An error protection measure is frequently the automatic switch-off of the power supply (Section 411) or double insulation (Section 412).

Table A.52.1 of DIN VDE 0100-520 defines that insulated cables (wire cables) may only be used in the electrical installation duct systems to be opened (including underfloor systems) if the duct system offers at least the protection rating IP4x and can only be opened with a tool. Jacketed cables can be used without restrictions.

In addition, Section 526.5 of DIN VDE 0100-520 defines that electrical connections must be made in suitable jacketing (e.g. boxes or in resources, if planned).

Metallic duct systems must be included in the safety measures and the equipotential bonding. This guarantees protection against electric shock according to DIN VDE 0100-410 and electromagnetic compatibility (EMC) according to EN 50310, EN 50173, EN 50174-2.

Mechanical load of cables

Floor installation systems

Basic manual

According to DIN VDE 0298, specific values for strain relief and bend radii may not be under-shot during the routing of heavy current cables and data cables. The standard also describes the permitted types of fastenings of cables using clips and their strain reliefs.

Separation of different services

DIN VDE 0100-520 states that cables of different voltage classes may only be installed together in a routing system if all the cables have protective insulation against the highest occurring voltage. Separating webs can be used to separate the different cables, as can the guarantee of a sufficient spacing.

Fire protection

The avoidance of fires, particularly in public buildings, is the main aim of fire protection. The spread of fire and particularly of smoke into other fire sections must be prevented with all the means available for a sufficiently long period of time. This provides the opportunity to take escape, rescue and extinguishing measures.

Fire protection measures should be taken on duct systems connecting/crossing fire sections, escape and rescue routes. The directives for cable systems (M)LAR system floors (M)SysBör regulate this in more detail.

The main causes for a fire on heavy current cables are:

- Incomplete short circuits or ground faults, e.g. on mechanically or thermally damaged cables

- Incorrect electrical connections, e.g. through a loose contact

- Heat build-ups

Equipotential bonding

The certified floor installation system must offer the option of being included in the equipotential bonding.

All the Hager underfloor cable duct systems are constructed in such a way that the connection and inclusion in the equipotential bonding is possible without major work.

The earthing clamp BKZSAK00 is used to include the duct system in the equipotential bonding. The earthing clamp is inserted in the existing grooves and screwed tight. The terminal area is designed for a conductor cross-section of up to 4 mm ^2 .

Touchable, electrically conductive electrical installation duct systems are not included in the protective equipotential bonding (see Section 411.3.1.2 of DIN VDE 0100-410) and thus are not to be used as an error protection measure. However, they can, for example, for EMC reasons, be included in the functional equipotential bonding or in the additional protective equipotential bonding and in the lightning protection equipotential bonding.

Conversely, this means that the resources installed within the electrical installation duct system must automatically fulfil the requirements for basic protection and error protection. This also includes the cable systems according to DIN VDE 410 Section 412.2.4.

The floor installation system is an electrical installation duct system and does not fulfil the requirements for double insulation (VDE 0100-410 Section 412). This means that the use of conductors with basic protection (e.g. H07V-K) is not permitted. At least jacketed cables (e.g. NYM-J) must be used, which end or are connected in suitable jackets (e.g. in boxes or in resources). Strain relief must always be provided.

Inter-unit working

On today's construction sites, inter-unit working is a matter of course and the associated intensive communication with the neighbouring units essential.

For this reason, we at Hager recommend, at the beginning of the construction phase and in agreement with the construction management, co-ordination between electricians and the conterminous inter-unit working, in order to guarantee a flawless procedure for installing the floor installation system and the quality of the entire construction section.

Inter-unit working - Screed work

Screed-flush cable duct systems and the connector boxes of the screed-covered duct system are a binding draw-off gauge for the screed. The levelling height of the system components is aligned to the structural specifications of the construction management (observe the cutting check).

The screed layer must work, compact and draw off the screed carefully in the area of the connector boxes and cable trunking. Screed can be destroyed through crack formation. Screed-flush systems and system components may not be subjected to loads before the screed has finally hardened, in order to avoid crack formation in the screed.

General information for screed layers

The duct system levelled to the target screed height and the levelled floor boxes may not be subject to a load, walked on or opened before the target screed stability is reached. With covers with snap fastenings, the transport lock screws of the cover may only be removed when the screed has hardened. Screed-flush ducts and floor boxes must be levelled to the intended height before screed laying (construction side height line). The screed layer should check the levelling height. Smooth and compress screed well on the screed-flush ducts and floor boxes. Only this achieves the required load capacity. All the duct openings larger than the grain size used must be sealed.

Inter-unit working - Floor covering work

The company responsible for the floor covering work is also responsible for the exact routing and adaptation of the floor covering to the connector boxes and cable outlets.

The exact joint dimensions must be clarified in advance with the construction management.

The covers of the screed-flush connector boxes must also be covered with floor covering.

Any carpet used must be permanently laid and must be resistant to cutting.

Inter-unit working - Building cleaning

In particular during the initial cleaning of the floor surfaces, building installation units and installation spaces must be carefully cleaned of construction dust and other impurities, so that their function does not lead to impairments later.

During the use phase, building installation units must be checked for their intended use and possible damage, in order to avoid later damage (Facility Management / Electricians).
In particular, device installation units for wet cleaned floors are to be maintained regularly and the seals checked for their function. For this, it is necessary to relubricate the seal regularly (Facility Management / Electricians).

Sound protection and impact noise

The aim of sound protection in buildings is to prevent sound from being transferred between various rooms and/or floors. The DIN 4109 standard contains guidelines on sound and impact noise levels in residential buildings. Impact noise con sists of two types of sound.

Airborne sound travels through the air, whereas structure-borne sound travels through solid bodies.

Standard DIN 4109 specifies noise limits L_n,w that must not be exceeded in certain areas of application.

Examples of segment-related noise limits:

• Office buildings: Residential dividing ceilings and ceilings between third-party office rooms L_nw ≤ 53 dB
• Recreation rooms and hotels (increased sound protection requirements): L_n,w ≤ 46 dB

The following always applies: The lower the values, the better the impact noise insulation is. The value can be reduced, for instance, by laying a floor covering (such as carpet). The transfer of impact noise can also be reduced by laying the screed on an insulation layer ("floating screed").

Impact noise reduction for floor installation systems

Reducing the transfer of impact noise is also relevant when laying underfloor installations. A test institute was therefore engaged to measure the impact noise reduction in selected Hager products. The requested test consisted of the measurement of the vertical spread of the structure-borne sound, in other words the transmission of sound between floors.

Müller-BBM GmbH measured the impact noise reduction in the ceiling test station in accordance with the DIN EN ISO 10140 standard and evaluated the findings in accordance with the ISO 717-2 standard.

The results of the measurement of the impact noise reduction are summarised below for the floor duct and the stainless steel cassette.

The installation of the floor duct has no significant influence on the impact noise reduction of the sc reed.

The installation of the stainless steel cassette has no significant influence on the impact noise reduction of the sc reed.

▶ You can find detailed information and an evaluation of the impact noise at www.hager.de.

Appendix

Overview of floor installation systems - cable assignment

Cable assignment, BKF ducts
Ducts	Nominal dimension	External width a [mm]	Duct height b max. [mm]	Levelling range [mm]	Usable cross-section [cm^2]	Max. cable as-signment ∅ 11 mm Filling level 0.5
BKF150045 150	166 70 45	-70 77 31
BKF150065 150	166 110 65	-110 121	50
BKF150105 150	166 150	105-150 165	68
BKF150145 150	166 190	145-190 209	86
BKF200045 200	216 70 45	-70 112 46
BKF200065 200	216 110 65	-110 176	72
BKF200105 200	216 150	105-150 240	99
BKF200145 200	216 190	145-190 304	125
BKF250045 250	266 70 45	-70 147 60
BKF250065 250	266 110 65	-110 231	95
BKF250105 250	266 150	105-150 315	130
BKF250145 250	266 190	145-190 399	164
BKF300045 300	316 70 45	-70 182 75
BKF300065 300	316 110 65	-110 286	118
BKF300105 300	316 150	105-150 390	161
BKF300145 300	316 190	145-190 494	204
BKF350045 350	366 70 45	-70 217 89
BKF350065 350	366 110 65	-110 341	140
BKF350105 350	366 150	105-150 465	192
BKF350145 350	366 190	145-190 589	243
BKF400045 400	416 70 45	-70 252 104
BKF400065 400	416 110 65	-110 396	163
BKF400105 400	416 150	105-150 540	223
BKF400145 400	416 190	145-190 684	282
BKF500045 500	516 70 45	-70 322 133
BKF500065 500	516 110 65	-110 506	209
BKF500105 500	516 150	105-150 690	285
BKF500145 500	516 190	145-190 874	361
BKF600045 600	616 70 45	-70 392 161
BKF600065 600	616 110 65	-110 616	254
BKF600105 600	616 150	105-150 840	347
BKF600145 600	616 190	145-190 1064	439

Cable assignment, BKW ducts

Ducts	Nominal dimension	External width [mm]	Drawing height [mm]	Levelling range [mm]	Usable cross-section [cm2]	Max. cable assignment ∅ 11 mm Filling level 0.5
BKW150040	150 166 28	40 - 60 37,5	15
BKW150050	150 166 38	50 - 70 50,9	21
BKW150060	150 166 48	60 - 100 64,3	26
BKW150070	150 166 58	70 - 110 77,7	32
BKW200060	200 216 48	60 - 100 88,3	36
BKW200070	200 216 58	70 - 110 106,7	44
BKW200080	200 216 68	80 - 120 125,1	51
BKW200090	200 216 78	90 - 130 143,5	59
BKW250060	250 266 48	60 - 100 112,3	46
BKW250070	250 266 58	70 - 110 135,7	56
BKW250080	250 266 68	80 - 120 159,1	65
BKW250090	250 266 78	90 - 130 182,5	75
BKW300060	300 316 48	60 - 100 136,3	56
BKW300070	300 316 58	70 - 110 164,7	68
BKW300080	300 316 68	80 - 120 193,1	79
BKW300090	300 316 78	90 - 130 221,5	91
BKW350060	350 366 48	60 - 100 160,3	66
BKW350070	350 366 58	70 - 110 193,7	80
BKW350080	350 366 68	80 - 120 227,1	93
BKW350090	350 366 78	90 - 130 260,5	107
BKW400060	400 416 48	60 - 100 184,3	76
BKW400070	400 416 58	70 - 110 222,7	92
BKW400080	400 416 68	80 - 120 261,1	107
BKW400090	400 416 78	90 - 130 299,5	123
BKW500060	500 516 48	60 - 100 232,3	96
BKW500070	500 516 58	70 - 110 280,7	116
BKW500080	500 516 68	80 - 120 329,1	136
BKW500090	500 516 78	90 - 130 377,5	156
BKW600060	600 616 48	60 - 100 280,3	115
BKW600070	600 616 58	70 - 110 338,7	139
BKW600080	600 616 68	80 - 120 397,1	164
BKW600090	600 616 78	90 - 130 455,5	188

Cable assignment, BKFD ducts

Ducts	Nominal dimension	External width [mm]	Duct height max. [mm]	Levelling range [mm]	Usable cross-sec-tion [cm2]	Max. cable as-signment ∅ 11 mm Filling level 0.5
BKFD150045 150	170 70	45-70 77 31
BKFD150065 150	170 110	65-110 121 50
BKFD150105 150	170 150	105-150 165 68
BKFD150145 150	170 190	145-190 209 86
BKFD200045 200	220 70	45-70 112 46
BKFD200065 200	220 110	65-110 176 72
BKFD200105 200	220 150	105-150 240 99
BKFD200145 200	220 190	145-190 304 125
BKFD250045 250	270 70	45-70 147 60
BKFD250065 250	270 110	65-110 231 95
BKFD250105 250	270 150	105-150 315 130
BKFD250145 250	270 190	145-190 399 164
BKFD300045 300	320 70	45-70 182 75
BKFD300065 300	320 110	65-110 286 118
BKFD300105 300	320 150	105-150 390 161
BKFD300145 300	320 190	145-190 494 204
BKFD350045 350	370 70	45-70 217 89
BKFD350065 350	370 110	65-110 341 140
BKFD350105 350	370 150	105-150 465 192
BKFD350145 350	370 190	145-190 589 243
BKFD400045 400	420 70	45-70 252 104
BKFD400065 400	420 110	65-110 396 163
BKFD400105 400	420 150	105-150 540 223
BKFD400145 400	420 190	145-190 684 282
BKFD500045 500	520 70	45-70 322 133
BKFD500065 500	520 110	65-110 506 209
BKFD500105 500	520 150	105-150 690 285
BKFD500145 500	520 190	145-190 874 361
BKFD600045 600	620 70	45-70 392 161
BKFD600065 600	620 110	65-110 616 254
BKFD600105 600	620 150	105-150 840 347
BKFD600145 600	620 190	145-190 1064 439
Cable assignment, BKWD ducts
Ducts	Nominal dimension	External width [mm]	Drawing height [mm]	Levelling range [mm]	Usable cross-sec-tion [cm2]	Max. cable as-signment∅ 11 mmFilling level 0.5
BKWD150040 150	170 28	40-60 37,5 15
BKWD150050 150	170 38	50-70 50,9 21
BKWD150060 150	170 48	60-100 64,3 26
BKWD200060 200	220 48	60-100 88,3 36
BKWD200070 200	220 58	70-110 106,7 44
BKWD200080 200	220 68	80-120 125,1 51
BKWD200090 200	220 78	90-130 143,5 59
BKWD250060 250	270 48	60-100 112,3 46
BKWD250070 250	270 58	70-110 135,7 56
BKWD250080 250	270 68	80-120 159,1 65
BKWD250090 250	270 78	90-130 182,5 75
BKWD300060 300	320 48	60-100 136,3 56
BKWD300070 300	320 58	70-110 164,7 68
BKWD300080 300	320 68	80-120 193,1 79
BKWD300090 300	320 78	90-130 221,5 91
BKWD350060 350	370 48	60-100 160,3 66
BKWD350070 350	370 58	70-110 193,7 80
BKWD350080 350	370 68	80-120 227,1 93
BKWD350090 350	370 78	90-130 260,5 107
BKWD400060 400	420 48	60-100 184,3 76
BKWD400070 400	420 58	70-110 222,7 92
BKWD400080 400	420 68	80-120 261,1 107
BKWD400090 400	420 78	90-130 299,5 123
BKWD500060 500	520 48	60-100 232,3 96
BKWD500070 500	520 58	70-110 280,7 116
BKWD500080 500	520 68	80-120 329,1 136
BKWD500090 500	520 78	90-130 377,5 156
BKWD600060 600	620 48	60-100 280,3 115
BKWD600070 600	620 58	70-110 338,7 139
BKWD600080 600	620 68	80-120 397,1 164
BKWD600090 600	620 78	90-130 455,5 188

Cable assignment, BKB ducts
Ducts	Duct width [mm]	Duct height [mm]	Version	Usable cross-section [cm2]	Max. cable as-signment ∅ 11 mm Filling level 0.5
BKB15085 150	85 2-compartment	10000 28
BKB25085 250	85 2-compartment	21250 45

Cable assignment, BKG ducts
Ducts	Nominal dimension [mm]	External width [mm]	Duct height without levelling screw [mm]	Usable cross-section [cm2] Duct height incl. levelling screw [mm]	Version	Usable cross-sec-tion [cm2]	Max. cable assign-ment ∅ 11 mm Filling level 0.5 Internal levelling
BKG20060	200 200	60,3 73			2-compartment	104.7 8
BKG30060	300 300	60,3 73			3-compartment	154.2 16
BKG40060	400 400	60,3 73			3-compartment	214.2 37
BKG50060	500 500	60,3 73			4-compartment	263.7 50
BKG30080	300 300	80,3 93			3-compartment	205.6 28
BKG40080	400 400	80,3 93			3-compartment	285.6 60
BKG50080	500 500	80,3 93			4-compartment	351.6 77

Cable assignment, UK ducts

Ducts Duct	width [mm]	Duct height [mm]	Version Dimensions, compartments [mm]	Usable cross-sec-tion [cm^2]	Max. cable as-signment ∅ 11 mm Filling level 0.5
UK190282 190	28		2-compartment	75/115 53,2 21(8 / 13)
UK190283 190	28		3-compartment	60/70/60 53,2 20(6 / 8 / 6)
UK190382 190	38		2-compartment	75/115 72,2 29(11 / 18)
UK190383 190	38		3-compartment	60/70/60 72,2 28(9 / 10 / 9)
UK190482 190	48		2-compartment	75/115 91,2 36(14 / 22)
UK190483 190	48		3-compartment	60/70/60 91,2 35(11 / 13 / 11)
UK240282 240	28		2-compartment	100/140 67,2 27(11 / 16)
UK240283 240	28		3-compartment	85/70/85 67,2 26(9 / 8 / 9)
UK240382 240	38		2-compartment	100/140 91,2 36(15 / 21)
UK240383 240	38		3-compartment	85/70/85 91,2 36(13 / 10 / 13)
UK240482 240	48		2-compartment	100/140 115,2 46(19 / 27)
UK240483 240	48		3-compartment	85/70/85 115,2 45(16 / 13 / 16)
UK340282 340	28		2-compartment	140/200 95,2 39(16 / 23)
UK340283 340	28		3-compartment	115/110/115 95,2 38(13 / 12 / 13)
UK340382 340	38		2-compartment	140/200 129,2 52(21 / 31)
UK340383 340	38		3-compartment	115/110/115 129,2 53(18 / 17 / 18)
UK340482 340	48		2-compartment	140/200 163,2 66(27 / 39)
UK340483 340	48		3-compartment	115/110/115 163,2 65(22 / 21 / 22)

Cable assignment, AK ducts

Duct bases Duct	width [mm]	Duct height [mm]	Version Usable	cross-sec-tion [cm2]	Max. cable assignment ∅ 11 mm Filling level 0.5
AKU1500401 150 40			Single-sided	60 24
AKU2000401 200 40			Single-sided	80 33
AKU2500401 250 40			Single-sided	100 41
AKU3000401 300 40			Single-sided	120 49
AKU1500701 150 70			Single-sided	105 43
AKU2000701 200 70			Single-sided	140 57
AKU2500701 250 70			Single-sided	175 72
AKU3000701 300 70			Single-sided	210 86
AKU3500701 350 70			Single-sided	245 101
AKU4000701 400 70			Single-sided	280 115
AKU1500402 150 40			Two-sided	60 24
AKU2000402 200 40			Two-sided	80 33
AKU2500402 250 40			Two-sided	100 41
AKU3000402 300 40			Two-sided	120 49
AKU1500702 150 70			Two-sided	105 43
AKU2000702 200 70			Two-sided	140 57
AKU2500702 250 70			Two-sided	175 72
AKU3000702 300 70			Two-sided	210 86
AKU3500702 350 70			Two-sided	245 101
AKU4000702 400 70			Two-sided	280 115

Reference sources of standards and specifications

10772 Berlin, Germany

50939 Cologne, Germany

MLAR publication in the DIBt notifications

10829 Berlin, Germany

Procurement of DIBt notifications at

Verlag Ernst & Sohn

Bühringstrasse 310

13086 Berlin, Germany

50735 Cologne, Germany