Panasonic VF200, Инструкция по эксплуатации

Страница: 134 / 289

10. Maintenance and Inspection
12
7
Loc
ati
on
Inspection
item
Inspection
details
Inspection
interval
Inspection
method
Judgment
criteria
Instrument
Operation
check
1) Check the
balance
condition of
output
voltage
between each
phase during
operation of
single unit;
2) Inspect the
protection
and display
circuit with
timing
protection
operation
test.
1) Measure the
voltage between
output terminals;
2) Simulate a
short circuit
condition
between the
inverter alarm
outputs.
1) Line
output
balance is
4 V max.
(8 V max.
for 400 V
type)
2) Timing
protection
circuit
must
function
properly.
Rectifier
voltmeter
The whole
part
1) Check for
strange smell
and
discoloration;
2) Check if there
is heavy
rustling.
1), 2): Smell and
check visually.
1), 2): In
normal status
C
ontr
o
l c
ir
c
ui
t and pr
otec
ti
on c
ir
c
ui
t
Capacitor
Check for liquid
leakage and
deformation.
✩
Check visually.
In normal
status
C
o
o
lin
g
syst
e
m
Cooling fan
1) Check for
abnormal
vibration and
noise;
2) Check if
connected parts
are loose.
✩
1) Just listen;
2) Strengthen the
fasteners.
1), 2): In
normal status