Table of Contents
Inspection
Check item
item
(1) Check output line
voltage balance
between phases
during inverter
operation without
application.
Operation
(2) Check the
checks
protection and
display circuits
with the
sequence
protection
operation test.
(1) Any strange
smells or
All parts
discoloration?
(2) Is there heavy
rusting?
Any trace of liquid
Capacitor
leaks or
deformation?
(1) Is there any
abnormal
vibration or
Cooling
abnormal noise?
(2) Are any of the
fan
connections
loose?
Display
Are any LEDs not
unit
working?
Are all readings
Meter
correct?
(1) Is there any
abnormal
vibration or
General
abnormal noise?
(2) Strange smells?
Check
Check method
frequency
(1) Measure voltage
between output
terminals.
(2) Simulate a
short-circuit
between the
inverter warning
outputs.
(1), (2)
Visual inspection
and smell
Visual inspection
(1) Audible check
(2) Tighten
fastenings
Visual inspection
Check indicated
value
(1), (2)
Visual, audible and
smell test
Test criteria
Instrument
(1) Line output
balance is 4V
max.
Rectifier type
voltmeter
(2) The sequence
protection circuit
must function
correctly.
(1), (2) Normal
Normal
(1), (2) Normal
Normal
Must be within
Voltmeter
standard value and
Ammeter
control value.
(1), (2) Normal
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