Delta VFD-S Series Drive
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May 16, 2022 11:07 am
How can resolve problem GF Ground fault in delta VFD-S series drive ?
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May 16, 2022 11:08 am
Ground fault
When (one of) the output terminal(s) is grounded, short circuit current is more than 50% of AC motor drive rated current, the AC motor drive power module may be damaged.
NOTE: The short circuit protection is provided for AC motor drive protection, not for protection of the user.
1. Check whether the IGBT power module is damaged.
2. Check for possible poor insulation at the output line.
