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Troubleshooting procedure
Nature of Fault
APFC-05
resets
occasionally on
turning OFF of
any contactor.
TAS POWERTEK PVT.LTD.
Probable Reason
• The contactor supply
phase may be the
same as used for
APFC-05
auxiliary
supply.
• R-C Snubbers or
MOVs for AC Circuits
or free-wheeling
diodes for DC Circuits
are not put with
contactor coils.
VERSION 1.0
- 32 -
... continued
Action to be taken
• Use the different
phase for control
supply of contactors
APFC-05
and for
supply
• Usage of R-C
Snubbers or MOVs /
free-wheeling diodes,
across the Contactor
Coils is mandatory.
Updated on: FEB. 18, 2015
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