A-TS
85
https://a-ts.cn/en/
Note
:
Dielectric test of the inverter has already been done in the factory. It is not
necessary for the user to do dielectric test again in order to avoid
potential damage of its internal components.
9.2.2 Replacing Easily-worn Parts
The easily-worn parts of the inverter are cooling fan and electrolytic
capacitor, whose life has close relation with the environment and
maintenance. Refer to the table below.
Part
Life
Fan
30~40 thousand hours
Electrolytic capacitor
40~50 thousand hours
Relay TA/TB/TC
About 100,000 times
You can decide the time when the components should be replaced
according to their service time.
1. Cooling fan
Possible cause of damages: wear of the bearing, aging of the fan vanes.
Criteria: After the inverter is switched off, check if an abnormal condition
such as crack exists on fan vanes and other parts. When the inverter is
switched on, check if inverter running is normal, and check if there is any
abnormal vibration.
2. Electrolytic capacitors
Possible cause of damages: high ambient temperature, aging of
electrolyte and large pulse current induced by rapid changing loads.
Criteria: Check if frequent over-current or over-voltage failures occur
during inverter start-up with load. Check if there is any leakage of liquids
( electrolytes ) . Check if the safety valve protrudes. Measure static
capacitance and insulation resistance.
3
．
Relay TA/TB/TC
Possible cause of damages: erosion, frequent operation..
Criteria: ON/OFF malfunction.
