MV510 series high-voltage inverter maintenance manual
10
Table 2.2 Periodic inspection table
Check parts Check item
Inspection matters
Inspection
methods and
criteria
Check bar
Transformer
part
Power cell
Overall
Check
with
megger
(between main circuit
terminal
and
ground
terminal)
Visual
/
Instrument
inspection:
no
damage,
no
pollution,
no
abnormalities.
Are screws, bolts and
connectors loose?
Is there any damage,
deformation
or
discoloration of parts
caused by overheating or
aging?
Are dirt, garbage, and
dust attached?
Wire
Is the wire cladding
damaged or aged?
Transformer
Is the coil part and
insulation
paper
damaged?
Is there any dust or
foreign matter on the coil
part?
Power cell
Does the capacitor leak
liquid?
Is the safety valve of the
capacitor extended?
Does
the
capacitor
expand?
Are the screws and bolts
loose?
Is the main circuit fuse
and the control fuse on
the board normal?
Is there any dirt or dust
on the heatsink?
Surge
suppressor
Is there any appearance
of dirt, loose parts of the
terminals
and
loose
mounting bolts?
Control section Loop
Is there any abnormality
between the protection
circuit and the display
Visual inspection:
no damage, no
pollution,
no
