CAUTION
Burns due to touching hot surfaces
Certain components (e.g. the heat sink or line reactor) can become very hot during operation.
The components can remain hot for some time after operation. Touching hot surfaces can
cause burns to the skin.
● Do not touch hot components during operation or immediately following operation.
WARNING
Electric shock and fire hazard caused by unsuitable protective equipment
Overcurrent protective equipment that trips too late or not all can cause electric shock or fire.
● In the case of a conductor-conductor or conductor-ground short-circuit, ensure that the
short-circuit current at the point where the converter is connected to the line supply
corresponds as a minimum to the requirements of the protective equipment used.
● You must use an additional residual-current protective device (RCD) if the required short-
circuit current is not reached for a conductor-ground short circuit. Especially for TT line
systems, it is possible that the required short-circuit current is not reached.
● It is not permissible that the short-circuit current exceeds the SCCR or the I
CC
of the
converter and the disconnecting capacity of the protective equipment.
Protection and monitoring equipment
To provide protection against short-circuit, use the overcurrent devices listed in Technical data
(fuses, circuit breakers etc.).
If the apparent impedance of the line supply at the infeed point is not suitable, so that fuses
do not rupture in the specified time in the case of insulation failure (ground fault, fault to frame),
then you must use additional fault current protective devices RCD (RCCB or MRCD), type B.
In order that an RCD does not unnecessarily trip as a result of operational leakage currents,
the following preconditions must be fulfilled:
● The neutral point of the line supply is grounded.
● For inverters with rated input currents ≤ 125 A referred to LO, use an RCCB type B with a
response limit current of 300 mA. Connect the RCCB in series with the overcurrent
protective devices.
Connecting-up
Power Module PM240-2
48
Hardware Installation Manual, 08/2017, A5E33294624B AG
