Maintenance and Inspection
Maintenance and Inspection
196
6.6 IGBT Module Test
Before conducting the IGBT module test, first dismount the external wires from the
main-circuit terminals. Then set the multi-meter to the ohm-testing position.
Positive
voltage
Negative
voltage
Normal result
Positive
voltage
Negative
voltage
Normal result
Terminal
mark
R
P
Conductive
Terminal
mark
U
P
Conductive
S
P
Conductive
V
P
Conductive
T
P
Conductive
W
P
Conductive
P
R
Non-conductive
P
U
Non-conductive
P
S
Non-conductive
P
V
Non-conductive
P
T
Non-conductive
P
W
Non-conductive
R
N
Non-conductive
U
N
Non-conductive
S
N
Non-conductive
V
N
Non-conductive
T
N
Non-conductive
W
N
Non-conductive
N
R
Conductive
N
U
Conductive
N
S
Conductive
N
V
Conductive
N
T
Conductive
N
W
Conductive
Note: The above diagram is the schematic diagram for frame A and B.
