Sanken Samco SVC06, Инструкция по эксплуатации, Страница: 117 / 136

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10
10-3 Part Replacement
10-3-2 Smoothing Capacitors
Aluminum electrolytic capacitors for smoothing deteriorate over time. It must be replaced approximate every ten
years. Since the service life varies greatly depending on the ambient temperature, load and using frequency, this
time period is only an approximate limit rather than a guaranteed limit.
When used continuously in a high temperature (averagely 40
℃
and above), the service life will be shortened.
The inverter must receive transmitted electricity at least once a year when it is stored and not energized.
The capacitors must be inspected at least once a year, and once in 6 months when they are near the end of their
lifetime.
10-4 Megger Test

When performing a megger test on the motor and the sequential circuit, be careful not to apply the test voltage
to the inverter.

For the inverter itself, perform the megger test only on the main circuit as shown below. Do not conduct a
megger test on the control circuit.
Test points
Motor
Power supply
Grounding
Megger
Figure 10-3 Circuit diagram for megger test
Use a multimeter (high resistance range) for continuity testing of the control circuit. Do not use the
testing instruments such as megger or buzzer.
Note: Use a megger for measurement when the connector status is OFF (in 4-7 About EMC filter).