Power Electronics SD750K, Hardware And Installation Manual

Page: 95 / 100

POWER ELECTRONICS SD750K
MAINTENANCE
93
Note: Long life of the main components above indicated are based on a continuous operation for the stipulated load.
These conditions can change according to the environment conditions.
In
sp
ec
tio
n
si
te
Inspection
element
Inspection
Period
Inspection method Criterion
Instrument of
Measurement
M
on
th
ly
3
mo
nt
hs
2
ye
ar
s
D
is
pl
ay
Measurement
Is the displayed value
correct?
o o
Check the reading
instrument with an external
measurement.
Check the specified
values and the control
values.
Voltage meter /
Current meter
etc.
M
ot
or
All
Is there any noise or
abnormal vibrations?
Has any unusual smell
been perceived?
o
o
Audible, sensory and visual
check.
Check if damages have
been
produced by
overheating.
No anomaly.
Insulation
resistance
Megger check (between
terminals of output circuit
and ground terminal) o
Disconnect the cables U, V
and W and join them
together. Check the
resistance between this join
and ground.
More than 5MΩ
Megger type
500V