Power Electronics SD300 Series User Manual

SD300
POWER ELECTRONICS
88
MAINTENANCE
Inspection site
Inspection
Period
Inspection
method
Criterion
Measurement
instrument
Monthly
1 year
2 years
Main circuit
CONDUCTOR / CABLE
Is the conductor
corroded?
Is the cable shield
damaged?
o
o
Visual check.
No anomaly.
TERMINAL
Is there any visible
damage?
o
Visual check.
No anomaly.
CORRECT CAPACITOR
Have fluid leakages
been observed?
Is the capacitor well
fastened?
Are there any signs of
dilation or retraction?
o
o
o
Visual check.
Measure the
capacitance with
a proper
instrument.
No anomalies.
Capacitance
higher than 85%
of rated
capacitance.
Instrument for
measuring
capacity.
CONTACTOR
Is there any contactor
chatter?
Is the contact
damaged?
o
o
Audible check.
Visual check.
No anomaly.
OPTIONAL BRAKING RESISTOR
Is there any damage
from resistance?
o
Visual inspection.
No anomaly.
Digital
multimeter /
analog tester
Check for disconnection
o
Disconnect one
side and
measure with a
tester.
Must be within +/-
10% of the rated
value of the
resistor.
Control circuit and
Protections
OPERATING CHECK
Is there any imbalance
between output voltage
phases?
o
Measure voltage
between output
terminals U, V
and W.
Balanced voltage
between phases.
Digital
multimeter /
RMS voltage
meter.
Are there any errors in
the display circuit after
the sequence protection
test?
o
Test the drive
output protection
in short and open
circuit conditions.
The circuit must
work according to
the sequence.

Power Electronics SD300 Series Specifications

General

Brand	Power Electronics
Model	SD300 Series
Category	Inverter
Language	English