Inspection and Maintenance
Inspection and Maintenance
147
6.6 IGBT Module Test
Before check, first dismount the external wires for the main-circuit terminals. Then, set your
multi-meter to the ohm-testing position.
Positive
voltage
Negative
voltage
Normal
result
Positive
voltage
Negative
voltage
Normal
result
Terminal
mark
R/L1
+/P
Conducting
Terminal
mark
U/T1
+/P
Conducting
S/L2
+/P
Conducting
V/T2
+/P
Conducting
T/L3
+/P
Conducting
W/T3
+/P
Conducting
+/P
R/L1
Not
conducting
+/P
U/T1
Not
conducting
+/P
S/L2
Not
conducting
+/P
V/T2
Not
conducting
+/P
T/L3
Not
conducting
+/P
W/T3
Not
conducting
R/L1
-/
N
Not
conducting
U/T1
-/
N
Not
conducting
S/L2
-/
N
Not
conducting
V/T2
-/
N
Not
conducting
T/L3
-/
N
Not
conducting
W/T3
-/
N
Not
conducting
-/
N
R/L1
Conducting
-/
N
U/T1
Conducting
-/
N
S/L2
Conducting
-/
N
V/T2
Conducting
-/
N
T/L3
Conducting
-/
N
W/T3
Conducting