Unitronics UMI-B1 UL Series Operation Manual page 101

UMI-B1 UL Series Inverter
Checking part
The lead of the
conductors
Terminals seat
Filter capacitors
Resistors
Checking item
Ensure that there is no
distortion or
color-changing of the
conductors caused by
overheating.
Ensure that there are
no crackles or
color-changing of the
protective layers.
Ensure that there is no
damage
Ensure that there is no
weeping,
color-changing,
crackles and cassis
expansion.
Ensure the safety
valve is in the right
place.
If necessary, measure
the static capacity.
Ensure whether there
is replacement and
splitting caused by
overheating.
Ensure that there is no
offline.
99
Checking
method
not mean that
there is
something
wrong with the
features.
Visual
NA
examination
Visual
NA
examination
Visual
NA
examination
Visual
NA
examination
Estimate the
usage time
according to the
NA
maintenance or
measure the
static capacity.
The static
Measure the capacity is
capacity by above or equal
instruments. to the original
value x 0.85.
Smelling and
visual NA
examination
Visual The resistors
examination or are in ±10% of
Fault tracking
Criterion