Siemens SIMOTICS GP series - Tightening Torques; Cable Entries, Sealing Plugs and Thread Adapters; Connecting the Grounding Conductor

Electrical connection
6.3 Tightening torques
Standard motors SH 63 ... 355
68 Operating Instructions, 12/2018, A5E38483075A
Cable glands with connecting thread in the terminal box (EN 50262)
②
O ring
6.3 Tightening torques
Note the information in Chapter Tightening torques (Page 141).
6.3.1 Cable entries, sealing plugs and thread adapters
Note the following when mounting:
● Avoid damaging the cable jacket.
● Adapt the tightening torques to the cable jacket materials.
Observe the documentation for tightening torques of the cable entries and sealing plugs for
direct mounting at the machine as well as additional glands (e.g. adapters).
6.4 Connecting the grounding conductor
The machine's grounding conductor cross-section must comply with EN / IEC 60034-1.
Please also observe installation regulations such as those specified in EN / IEC 60204-1.
Basically, there are two ways of connecting a grounding conductor to the machine.
● Internal grounding with a connection in terminal box at the location intended for this
purpose and marked accordingly.
● External grounding with connection at the stator housing at the locations intended for this
purpose and marked accordingly.