Rectifier Diode / Bridge: Testing and Inspection
Rectifier60 A / 70 A Types
1. Using ohmmeter, check continuity between each of upper and lower rectifier bodies and each diode lead (2). Check both directions by reversing probes of ohmmeter and there should be only one-way continuity in each case. If check result is not satisfactory, replace rectifier (1).
2. In the same manner as described in above Step 1), check that there is only one-way continuity between both leads of diode trio.
80 A Types
- Positive rectifier
a. Using an ohmmeter, connect one tester probe to the "B" terminal (1) and the other to each rectifier terminal (2).
b. Reverse the polarity of the tester probes and repeat Step 1).
c. Check that one shows continuity and the other shows no continuity. If there is continuity, replace the rectifier.
- Negative Rectifier
a. Using an ohmmeter, connect one tester probe to each negative terminal (1) and the other to each rectifier terminal (2).
b. Reverse the polarity of the tester probes and repeat Step 1).
c. Check that one shows continuity and the other shows no continuity. If there is continuity, replace the rectifier.