Siemens SINAMICS G120 Operating Instructions Manual page 80

Low voltage inverters built-in units with cu250s-2 control units and encoder evaluation

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4.4 Connecting the line supply and motor

Additional requirements placed on the protective conductor

● For permanent connection, the protective conductor must fulfill at least one of the following

– The protective conductor is routed so that it is protected against damage along its

– As a conductor of a multi-conductor cable, the protective conductor has a cross-section

– For an individual conductor, the protective conductor has a cross-section ≥ 10 mm² Cu.

– The protective conductor consists of two individual conductors with the same cross-

● When connecting a multi-core cable using an industrial plug connector according to EN

60309, the protective conductor must have a cross-section of ≥ 2.5 mm² Cu.

complete length.

Cables routed inside switch cabinets or enclosed machine housings are considered to

be adequately protected against mechanical damage.

≥ 2.5 mm² Cu.

Converter with the CU250S-2 Control Units

Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG