Mitsubishi FR - S500 Instruction Manual page 160

Inspection
Description
Item
(1) Check with
megger
(across
main circuit
terminals
and ground
terminal).
General
(2) Check for
loose screws
and bolts.
(3) Check for
overheat on
each part.
(4) Clean.
(1) Check
conductors
Conductors, for distortion.
cables (2) Check cable
sheaths for
breakage.
Terminal Check for
block damage.
Inverter Check
module resistance
Converter across
module terminals.
(1) Check for
liquid
leakage.
(2) Check for
Smoothing safety valve
capacitor projection
and bulge.
(3) Measure
electrostatic
capacity.
(1) Check for
chatter
during
operation.
Relay
(2) Check for
rough
surface on
contacts.
Interval
Periodic*
Method
(1) Disconnect
all cables
from inverter
and measure
across
terminals R,
S, T, U, V, W
and ground
terminal with
megger.
(2) Retighten.
(3) Visual check.
(1), (2) Visual
check.
Visual check
Disconnect
cables from
inverter and
measure across
terminals R, S,
T P, N, and
across U, V,
W P, N with a
meter with a
100 range.
(1), (2) Visual
check.
(3) Measure with
capacity
meter.
(1) Auditory
check.
(2) Visual check.
151
Criterion Instrument
(1) 5M or 500VDC
more. class
(2), (3) No megger
fault.
(1), (2) No fault.
No fault
Refer to page Analog
153. meter
(1), (2) No fault. Capacity
(3) 85% or meter
more of
rated
capacity.
(1) No fault.
(2) No fault.