Emc-Compliant Cabinet Design - Siemens SINAMICS V20 Operating Instructions Manual

Shielding method
The following illustration shows an example with and without the shielding plate.
4.4

EMC-compliant cabinet design

The most cost-effective method of implementing interference suppression measures within
the control cabinet is to ensure that interference sources and potentially susceptible
equipment are installed separately from each other.
The control cabinet has to be divided into EMC zones and the devices within the control
cabinet have to be assigned to these zones following the rules below.
● The different zones must be electromagnetically decoupled by using separate metallic
housings or grounded separation plates.
● If necessary, filters and/or coupling modules should be used at the interfaces of the zones.
● Cables connecting different zones must be separated and must not be routed within the
same cable harness or cable channel.
● All communication (e.g. RS485) and signal cables leaving the cabinet must be shielded.
SINAMICS V20 Inverter
Operating Instructions, 11/2016, A5E34559884-006
Electrical installation
4.4 EMC-compliant cabinet design
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