Froling T4e - 2.3.4 Potential equalisation; potential separation

2 | Power connection and wiring
32 B1820023_en | Service handbook Lambdatronic H 3200 - T4e
2.3.4 Potential equalisation / potential separation
There can be potential shifts between buildings. In this case, equalising currents flow via the bus connection
shield which can damage the modules.
To prevent this, buildings must be connected using a potential equalisation conductor.
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Expansion
module
BUS connection
Potential equalisation line
NOTICE!The dimensions of the equalization line must be installed by a specialist in accordance with
regional regulations.
Instead of the potential equalisation, a Fröling bus repeater can be used in the bus connection line to the next
building. The potential separation (galvanic isolation) allows the bus network to be split into two separate sub-
networks.
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Bus repeater
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Bus side B
Expansion
module