Fault Tracking
123
Checking part
Checking item
Checking
method
Criterion
Ensure that there are no
crackles or color-changing
of the protective layers.
Visual
examination
NA
Terminals seat
Ensure that there is no
damage
Visual
examination
NA
Filter capacitors
Ensure that there is no
weeping, color-changing,
crackles and cassis
expansion.
Visual
examination
NA
Ensure the safety valve is
in the right place.
Estimate the
usage time
according to the
maintenance or
measure the
static capacity.
NA
If necessary, measure the
static capacity.
Measure the
capacity by
instruments.
The static
capacity is above
or equal to the
original value
*0.85.
Resistors
Ensure whether there is
replacement and splitting
caused by overheating.
Smelling and
visual
examination
NA
Ensure that there is no
offline.
Visual
examination or
remove one
ending to
coagulate or
measure with
multimeters
The resistors are
in ±10% of the
standard value.
Transformers and
reactors
Ensure there is no
abnormal vibration, noise
and smelling,
Hearing, smelling
and visual
examination
NA
Electromagnetism
contactors and
relays
Ensure whether there is
vibration noise in the
workrooms.
Hearing
NA
Ensure the contactor is
good enough.
Visual
examination
NA