31
Location Inspection item Inspection details Inspection
interval
Inspection
method
Judgment criteria
Instrument
Main Circuit
Operation
Check
1) Check the
balance condition
of the 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 4V max.
(400V type is 8V
max.)
2) Timing protection
circuit must function
properly.
Rectifier
voltmeter
Whole unit
1) Check if there is
burning smell and
discoloration.
2) Check if there is
heavy rustling.
○
○
1), 2): Smell
and
check visually.
1), 2): In normal state
Capacitor
Check for liquid
leakage and
deformation.
☆
Check visually. In normal state
Cooling system
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 state
Display
Display unit
Check if the
indicator
malfunctions.
☆
Check visually. In normal state
Meter
Check if the
indication is
correct.
☆
Check the
indication.
Within specifications
or control values.
Voltmeter
Ammeter
Motor
Whole unit
1) Check for
abnormal vibration
and noise;
2) Check if there is
burning smell.
☆
☆
Check visually,
listen and smell
1), 2): In normal state
Summary of Contents for AMK3000114
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