Installation Instructions

Table Of Contents
5.1.2 TT line system
In a TT line system, the transformer grounding
and the installation grounding are independ‐
ent of one another.
There are TT line supplies where the neutral
conductor N is either transferred – or not.
7UDQVIRUPHURU
JHQHUDWRU
7RWKHV\VWHP
([DPSOH 7UDQVIHURI1JURXQGHGQHXWUDO
SRLQW
/
/
/
1
3(
Inverter operated on a TT line system
Inverter with integrated or external line filter:
Operation on TT line systems with grounded neutral point permissible.
Operation on TT line systems without grounded neutral point not permissible.
Inverter without line filter:
Operation on all TT line systems permissible.
For installations in compliance with IEC, operation on a TT line system is permissible. For
installations in compliance with UL, operation on a TT line system is not permissible.
Connecting
5.1 Permissible line supplies
Power Module PM230, IP20 / Push-through technology (PT)
42 Hardware Installation Manual, 08/2016, A5E34331322B AB