Motor Cable Lengths And Cross-Sections - Siemens SINAMICS G120P Hardware Installation Manual

4.3

Motor cable lengths and cross-sections

Permissible Cable Length
The use of unshielded motor cables is possible. However to meet C1/C2 EMI classes,
shielded cables with appropriate EMC installation are required.
The EMI classes relevant to the PM230 are explained below:
First Environment
An environment that includes domestic premises and establishments that are connected
directly to a public low-voltage power supply network without the use of an intermediate
transformer.
Note
For example: houses, apartments, commercial premises or offices in a residential building.
Category C1
Power Drive System (PDS) of rated voltage less than 1000 V intended for use in the First
(Domestic) Environment.
Category C2
Power Drive System (PDS) of rated voltage less than 1000 V, which is neither a plug in
device nor a movable device, and when used in the First (Domestic) Environment, is only
intended to be installed and commissioned by a professional.
Note
A professional is a person or an organization having necessary skills in installing and/or
commissioning a Power Drive System (PDS), including their EMC aspects.
The following cable specifications should be adopted to reach the standards indicated in the
table below.
Power Module PM230 IP55
Hardware Installation Manual, 2010-07-02, A5E02923635A AB
4.3 Motor cable lengths and cross-sections
Connecting
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