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Cable entry systems

Flexible system with coordinated components

Over the course of its life, a building frequently undergoes renovation or refurbishment. In most cases, however, these activities only take place in the parts of the building located above ground level. Nonetheless, the requirements for the cable infrastructure in a building can also change significantly over time. 

This is where it is recommended during construction of a building to provide for spare openings and lay a robust, durable empty conduit route via which lines can be replaced or new lines laid without having to dig up the entire conduit route every time.
For this purpose, Hauff-Technik offers the KES150 pressure-tight cable entry system, which is compatible with the Hateflex14150 and Hauff-Flex 150 spiral hoses, as well as various options for cable sealing. This system can be relied upon to provide optimum protection for the cables that are being laid. 

The main areas of application for pressure-tight cable entry systems are building entries, substations, converter stations or cable shafts.

Inserts for wall and floor slab

The Hateflex and Hauff-Flex 150 plastic spiral hoses are developed and optimised for civil engineering applications. They are made of UV-stabilized soft PVC, reinforced with spiral of hard PVC. The smooth inside ensures easy and gentle cable feeding thanks to minimal frictional forces. The impact and break resistance of the materials used enables loading and transport tasks, even at low temperatures. 

Thanks to their flexibility, Hateflex and Hauff-Flex 150 are simple and easy to install. They are available up to a length of 25 m and can be freely extended with the aid of connecting sleeves. At the end of the hose, transition and end sleeves enable cables laid to be sealed and combined with conventional cable ducts. 

Other combination options according to application

Pressure tightness up to 0.5 bar
Pressure tightness up to 0.5 bar

The HSI150 KMA WR can be used for connecting conventional corrugated pipes. With this cable entry system, the pressure-tightness depends on the corrugated pipe, but is generally up to 0.5 bar. 

Pressure tightness up to 0.5 bar
Pressure tightness up to 0.5 bar

At a required pressure-tightness up to 0.5 bar, the HSI150 GSM can be used for the connection of smooth cable ducts. An HSI150 DG system cover is installed on the inside of the building for cable sealing.

Pressure tightness up to 1 bar
Pressure tightness up to 1 bar

At a required pressure-tightness up to 1 bar, the Hauff-Flex 150 cable duct hose can be used. Connection to the building is via HSI150 KMA. An HSI150 DG system cover is installed on the inside of the building for cable sealing. 

Pressure tightness up to 2.5 bar
Pressure tightness up to 2.5 bar

For a cable entry system with a pressure-tightness up to 2.5 bar, use the Hateflex14150 cable duct hose. The connection to the building is via the HSI150 KMA, cable sealing on the inside of the building with an HSI150 DG system cover.


Tips on installation


The pipe trench should be excavated to the necessary depth; the trench bottom must be compressed in such a way that subsidence is ruled out.

The trench bottom should be levelled free of stones and kept free of foreign bodies. A sand bed of approx. 10 cm should be added.

The Hateflex hose system should be covered with 10 cm of sand and compressed by hand. The remaining pipe trench should be filled in 30-cm layers with stone-free fill material and compressed.

If more than two hoses are being installed, connect the spacers together. 

Slot the eyelet onto the pin for this purpose.

In the first layer, place the spacers directly on the soil and clip in the hose.

Fill up space between and next to the pipes and compress.

In the case of multi-layer hose systems, the spacers are placed on the layer of hoses immediately below. The hoses can then be clipped in again.

Bending radiuses

The following minimum radiuses apply to Hateflex systems at an installation temperature of 20° C.

Peak compressive strength according to DIN EN 61386-24

An important property of cable hoses is their mechanical load capacity. This is calculated and classified according to the pressure test described in DIN EN 61386-24. The test describes the maximum vertical force that needs to be exerted on the pipe apex for its inner diameter to be deformed by 5%. 

Solution overview cable entry systems