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Only training and service purposes.
2.5 Inverter IGBTM Checking Method
1. Wait until Comp PCB DC voltage is discharged after main power off.
2. Pull out DC_Link connector and U,V,W comp connector connected with Inverter PCB
3. Set multi tester in diode mode.
4. Measured value should be 0.2~0.6V measuring as below table.
5. In case the measured value is different from the table, set multi tester to resistance mode and measure. If the
value is small(0Ω) or high( hundreds MΩ), PCB needs to be replaced.
6. In case that IGBTM is damaged, check if comp is needed to be replaced
]
Red(+) and black(-) are the measuring terminals of multi tester.
P
N
Inverter PCB
U
V
W
3
1
8
9
:
Checking Method for Key Components
P terminal : black(-)
N terminal: red(+)
U terminal : red(+)
0.2V~0.6V
V terminal : red(+)
0.2V~0.6V
W terminal : red(+)
0.2V~0.6V
U terminal : black(-)
0.2V~0.6V
V terminal : black(-)
0.2V~0.6V
W terminal : black(-)
0.2V~0.6V
