Converter Operation On A Grounded Network - Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions

6.5.5.2

Converter operation on a grounded network

NOTICE
Damage resulting from protective conductor currents
When the machine is operated on a converter with current limiter, but without ground-fault
monitoring, protective conductor currents of up to 1.7 times the external conductor current
can arise if there is a ground fault on the output side. Neither the PE conductors of normally
rated multi-core connecting cables nor the PE connecting points of normal terminal boxes
are suitable for this purpose. Material damage can result.
● Use an appropriately sized PE conductor.
● Connect the PE conductor to the grounding terminal on the motor enclosure.
SIMOTICS FD 1LH1
Operating Instructions 04/2016
Electrical connection
6.5 Connecting the auxiliary circuits
95