Honeywell SmartVFD HVAC2 Applications Manual page 6

Earthing and earth fault
protection
The SmartVFD HVAC2 frequency converter must
always be earthed with an earthing conductor
connected to the earthing terminal. See figure
below:
Fig. 1. MI1 - MI3
MCR36496
• The earth fault protection inside the frequency
• If fault current protective switches are used
6
Fig. 2. MI4
Fig. 3. MI5
converter protects only the converter itself
against earth faults.
they must be tested with the drive with earth
fault currents that are possible to arise in fault
situations.
MCR36497
MCR36498
31-00108—07