5-15
5.5 Maintenance
To ensure long-term reliability, follow the instructions below to perform regular inspection. Turn the power off
and wait for a minimum of 5 minutes before inspection to avoid potential shock hazard from the charge stored in
high-capacity capacitors.
1. Maintenance Check List.
Ensure that temperature and humidity around the inverters is as required in the instruction manual,
installed away from any sources of heat and the correct ventilation is provided..
For replacement of a failed or damaged inverter consult with the local supplier.
Ensure that the installation area is free from dust and any other contamination.
Check and ensure that the ground connections are secure and correct.
Terminal screws must be tight, especially on the power input and output of the inverter.
Do not perform any insulation test on the control circuit.
2. Insulation test Method .
Single Phase
INV
L1(L)
L3(N)
T1
T2
T3
Dielectric
Withstand
Voltage Test
Power
Source
Motor
Three Phase
INV
L1(L)
L3(N)
T1
T2
T3
Dielectric
Withstand
Voltage Test
Power
Source
Motor
L2
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