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Troubleshooting Problems With Diode Stack - Mitsubishi Electric PURY-HP72 Service Handbook

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[8-10 Troubleshooting Inverter Problems (TKMU) ]
8-10-15

Troubleshooting Problems with Diode Stack

Measure resistances between each pair of terminals on the diode stack with a tester, and use the results for troubleshooting.
For cautionary notes on measuring diode stack resistance and information on the types of testers to be used, refer to the fol-
lowing page(s). [8-10-14 Troubleshooting Problems with Intelligent Power Module](page 296)
Judgment value (reference)
+ (P)
- (N)
to (L1)
Red (-)
to (L2)
to (L3)
HWE13080
Black ( + )
+ (P)
- (N)
to (L1)
-
-
5 - 200
5 - 200
-
-
5 - 200
-
5 - 200
-
5 - 200
-
- 297 -
External view
to (L2)
to (L3)
5 - 200
-
-
Internal circuit diagram
-
-
-
-
L1
L2
L3
+
L1
L2
L3
-
GB

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