TM 10-3510-226-23
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TEST-CONTINUED
Test the Transformer
WARNING
Ensure that all electrical power is shut off and disconnected before proceeding. The
Circuit Breaker box should be locked by personnel following this procedure. Serious
injury or death can result from electrocution if proper safety precautions are not observed.
1. Disconnect power by switching the circuit breakers to OFF.
2. Remove screws retaining contactor box cover and remove cover.
3. Tag and disconnect the electrical quick disconnects (Figure 2, Items 3 and 4) from transformer
(Figure 2, Item 5).
4. Use an ohmmeter to test for 0.2 ohms resistance across the terminals 1 and 4 on the four-pin
electrical quick disconnect (Figure 2, Item 3).
5. Use an ohmmeter to test for 0.2 ohms resistance across the terminals 2 and 3 on the four-pin
electrical quick disconnect (Figure 2, Item 3).
6. Use an ohmmeter to test for 6.5 ohms resistance across the terminals on the tow-pin electrical quick
disconnect (Figure 2, Item 4).
7. Replace an open or shorted transformer (Figure 2, Item 5).
8. Connect wiring to replacement transformer (Figure 2, Item 5) as tagged.
9. Install contactor box cover and retain with screws.
10. Connect power, operate IAW procedures given in TM 10-3510-226-10, and monitor for normal
operation.
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