BENSHAW Rsi S Series, Инструкция по эксплуатации

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347
Maintenance
Inspection
area Inspection item Inspection details Inspection method Judgment
standard
Inspection
equipment
overheating?
Cable
connections Are there any
corroded cables? Visual inspection
No
abnormality -
Is there any
damage to cable
insulation?
Terminal block Is there any
damage?
Visual inspection
No
abnormality -
Smoothing
condenser Measure
electrostatic
capacity.
Measure with
capacity meter.
Rated
capacity over
85% Capacity meter
Relay Is there any
chattering noise
during operation? Visual inspection
No
abnormality -
Is there any
damage to the
contacts? Visual inspection
Braking resistor Is there any
damage from
resistance?
Visual inspection
No
abnormality Digital
multimeter /
anaog tester
Check for
disconnection. Disconnect one
side and measure
with a tester. Must be
within
±
10% of the
rated value of
the resistor.
Control
circuit
Protection
circuit Operation
check Check for output
voltage imbalance
while the inverter
is in operation. Measure voltage
between the
inverter output
terminal U/ V/ W. Balance the
voltage
between
phases:
within 4V for
200V series
and within 8V
for 400V
series. Digital
multimeter or
DC voltmeter
Is there an error in
the display circuit
after the
sequence
protection test? Test the inverter
ouput protection
in both short and
open circuit
conditions. The circuit
must work
according to
the
sequence.
Cooling
system Cooling fan Are any of the fan
parts loose? Check all
connected parts No
abnormality -