We have two compressors in the plant, one running on VFD and has an AEGIS ring at motor DE. Two motors and a spare are used interchangeably. Can we also use the VFD motor with AEGIS ring on the direct drive if needed? Plant electrical people saying we should not use the motor with AEGIS ring on the direct drive, it might cause grounding issue in case of an electrical failure.
Any insights on this is much appreciated.