• Interference-free operation with residual current device is guaranteed at a trip-
ping current ≥ 30 mA if the following points are observed:
− one-phase power supply (L1/N): Pulse current and alternating current sensi-
tive residual current devices (Type A to EN 50178)
− two-phase power supply (L1/L2) or
three-phase power supply (L1/L2/L3):
All-current sensitive residual current devices (Type B to EN 50178)
− Use EMC filters with reduced leakage current or, if possible, do not use EMC
filters at all.
− The length of the shielded motor cable is ≤ 10 m and there are no additional
capacitive components between the mains or motor cables and PE.
06/13 Operating Instructions ACU 49
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