Installation
4.2 Electrical Installation
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
39
Dimensioning the protective conductor
Observe the local regulations for protective conductors subject to an increased leakage
current at the installation site.
①
Protective conductor for line feeder cables
②
Protective conductor for inverter line feeder cables
③
Protective conductor between PE and the electrical 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
●
Line feeder cable = 16 mm² … 35 mm
2
⇒ Minimum cross
-section of the protective conductor = 16 mm
2
●
Line feeder cable> 35 mm
2
⇒ Minimum cross
-section of the protective conductor = ½ cross-section of the line or
motor feeder cable