22 Rockwell Automation Publication 520-UM001I-EN-E - July 2016
Chapter 1 Installation/Wiring
RFI Filter Grounding
Using a drive with filter may result in relatively high ground leakage currents.
Therefore, the filter must only be used in installations with grounded AC
supply systems and be permanently installed and solidly grounded (bonded)
to the building power distribution ground. Ensure that the incoming supply
neutral is solidly connected (bonded) to the same building power distribution
ground. Grounding must not rely on flexible cables and should not include any
form of plug or socket that would permit inadvertent disconnection. Some local
codes may require redundant ground connections. The integrity of all
connections should be periodically checked.