Kruger Ecowatt K320 Series Operation Manual page 280

Ecowatt Drive K320 series
®
Subject
Conductor and
wire
Terminal
block
Filter capacitor
Resistor
Item
Check whether the
conductors are deformed or
their color change due to
overheat.
Check whether the wire
sheaths are cracked or their
color changes.
Check whether there is
damage.
Check whether there is
electrolyte leakage,
discoloration, cracks, and
chassis expansion.
Check whether the safety
valves are released.
Check whether the
electrostatic capacity is
measured as required.
Check whether there is
displacement caused due to
overheat.
Check whether the resistors
are disconnected.
Method
Visual inspection
Visual inspection
Visual inspection
Visual inspection
Determine the
service life based
on the
maintenance
information, or
measure them
through
electrostatic
capacity.
Use instruments to
measure the
capacity.
Olfactory and
visual inspection
Visual inspection,
or remove one end
of the connection
cable and use a
multimeter for
measurement.
-271-
Maintenance
Criterion
Discoloration of
copper bars does
not mean that
they cannot work
properly.
No exception
occurs.
No exception
occurs.
No exception
occurs.
No exception
occurs.
No exception
occurs.
Electrostatic
capacity ≥ initial
value × 0.85
No exception
occurs.
Resistance range:
±10% (of the
standard
resistance)