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Converter Operation On A Grounded Network - Siemens 1LA8 Operating Instructions Manual

Simotics tn series induction motor.
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Electrical connection
6.5 Connecting the auxiliary circuits
Note
Converter documentation
The operating instructions for the converter are not part of this documentation. Refer also to
the configuration information for the converter.
6.5.5.4

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.
80
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016

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