Description
WARNING
Electric shock due to interrupted protective conductor
The drive components conduct a high leakage current via the protective conductor. Touching
conductive parts when the protective conductor is interrupted can result in death or serious
injury.
● Observe the minimum cross-section of the protective conductor.
① Protective conductor for line feeder cables
② Protective conductor for converter line feeder cables
③ Protective conductor between PE and the control cabinet
④ Protective conductor for motor feeder cables
The minimum cross-section of the protective conductor ① … ④ depends on the cross-section
of the line or motor feeder cable:
● Line or motor feeder cable ≤ 16 mm
2
⇒ Minimum cross-section of the protective conductor = cross-section of the line or motor
feeder cable
● 16 mm² < line or motor feeder cable ≤ 35 mm
2
⇒ Minimum cross-section of the protective conductor = 16 mm
2
● Line or motor feeder cable > 35 mm
2
⇒ Minimum cross-section of the protective conductor = ½ cross-section of the line or motor
feeder cable
Wiring
4.1 Line supply and motor
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 81
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