2 electrical isolation, 3 use of residual current protection devices, Electrical isolation – JUMO 709050 IPC IGBT Power Converter IPC 70A Operating Manual User Manual

Page 24: Use of residual current protection devices, 4 electrical connection

4 Electrical connection

4.1.2 Electrical isolation

The control section, including the inputs and outputs, as well as all operator
controls have been laid out for connection to SELV circuits.

4.1.3 Use of residual current protection devices

The converter is equipped with an internal input rectifier. A short to the housing
can result in a residual DC current that blocks the tripping of the conventional
residual current protection device. For this reason, any RCD used must be an
„all-current sensitive“ version of Type B.
When defining the trip current for the RCD, the leakage currents of the EMC
filter caused by the Y capacitors (<3mA) as well as the capacitive currents
from the cable shielding have to be taken into account.

There is no electrical isolation between the voltage supply of the
power section and the load.

Ensure that the metal housing of the oven or combustion chamber
is properly earthed.

v Chapter 3.2 „Filtering and interference suppression“ Installation

must comply with EVC requirements.