Panasonic VF200 Instruction Manual page 134

Inspection Inspection
item details
1) Check the
balance
condition of
output
voltage
between each
phase during
operation of
Operation
single unit;
check
2) Inspect the
protection
and display
circuit with
timing
protection
operation
test.
1) Check for
strange smell
and
The whole
discoloration;
part
2) Check if there
is heavy
rustling.
Check for liquid
Capacitor
leakage and
deformation.
1) Check for
abnormal
vibration and
Cooling fan noise;
2) Check if
connected parts
are loose.
Inspection Inspection
interval method
1) Measure the
voltage between
output terminals;
2) Simulate a
short circuit
condition
between the
inverter alarm
outputs.
1), 2): Smell and
check visually.
✩
Check visually.
✩
1) Just listen;
2) Strengthen the
fasteners.
10. Maintenance and Inspection
Judgment
criteria
1) Line
output
balance is
4 V max.
(8 V max.
for 400 V
type)
2) Timing
protection
circuit
must
function
properly.
1), 2): In
normal status
In normal
status
1), 2): In
normal status
Instrument
Rectifier
voltmeter
127