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E-Flex drive is blowing the secondary fuse of a control transformer. What are some possible causes?

Issue:
E-Flex drive is blowing the secondary fuse of a control transformer. What are some possible causes?

Product Line:
E-Flex

Environment:
Class 8839

Cause:
A possible short circuit in the control circuit

Resolution:
Remedy

Check bypass, DOC, and IS contactors. 
Ohm out all relays and contactors
Check any user supplied contactors. Make sure only a dry contactor between pins 6 & 7

 

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