Preface
Booksize Power Units
12 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Testing the protection against electric shock when using frequency converters
Protection on indirect contact in the motor circuit of a converter and automatic disconnection
in case of a fault in accordance with DIN EN 60364-4-4 VDE 0100, part 410 is ensured if the
following conditions are met:
● The installation instructions provided in the documentation of the converter have been
followed, in particular, regarding
– Equipotential bonding
– Conductor cross section
– Fuse protection
● The valid standards were complied with during installation:
– DIN EN 50178 VDE 0160
– DIN EN 60204-1 VDE 0113, part 1
– DIN EN 60364-5-52 VDE 0100-520
– DIN EN 60364-5-54 VDE 0100-540
● Continuity of the PE conductor is ensured according to DIN VDE 0100-600 (IEC 60364-6)
Converters of the SINAMICS series meet the requirements defined in DIN EN 60364-4-41
VDE 0100, part 410 and comply with the specified break times.
In the case of a short-circuit with negligible impedance to ground, the converter interrupts the
circuit within the shortest time (<< 100 ms). As a consequence, there is very high impedance
between the converter DC link and the output (> 1 MΩ) so that the possible voltage as result
of the voltage divider with the impedance of the ground connection between the motor and
converter is less than 50 VAC or 120 VDC.
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