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Location
Control
wiring
equipment
Auxiliary switch
Drive unit
Insulation
Main circuit
resistance
Operation
circuit
Dielectric
Main circuit
strength
Open/close operation
Remarks: For extraordinary (unscheduled) inspections , pick up check items from the above
table.
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
What to inspect
Check for discoloration
and tightness.
Amount of dust attached.
Overheat, discoloration.
Measure insulation
resistance between
phases, between
electrodes and between
circuits and ground.
(Measurement is taken
by 1000V megger.)
Measure insulation
resistance between
circuits and ground.
(Measurement is taken
by 500V megger.)
Measure dielectric
strength between phases,
between electrodes and
between circuits and
ground.
Perform open/close
operation by electric
operation test to confirm
the correct operation.
-
１８ -
Decision criteria
What to do
－
Retighten.
Check by sight.
Replace if damage
is excessive.
Check by sight.
Replace if abnormal
More than 50MΩ
When the insulation
resistance is
below the standard
level, investigate the
cause and, if
necessary, replace
parts.
More than 1MΩ
AC 1.5E for
If found abnormal
10 minutes.
inform the maker.
If found abnormal,
check and repair.
If necessary,
replace faulty parts.
6F9G0154
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