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Westinghouse type DHP breaker

Westinghouse type DHP breaker

Westinghouse type DHP breaker

(OP)
I am in desperate need of an instruction manual for a Westinghouse type DHP 3000A circuit breaker. We have burnt two trip coils because the mechanism is hanging up and need a drawing(parts layout) of how the trip mechanism works. Oh yeah, we found a broken bolt under the breaker when we racked it out - that's why we need the mechanical layout. We're hoping that the piece was old and not from the breaker-because it is threaded and not a pin. We're praying that it is just old grease hogging down the mechanism. Any help would be greatly appreciated. Hint....ZogZog

RE: Westinghouse type DHP breaker

Sounds like she needs a complete rebuild, either way you will be taering down and rebuilding the mech, you cant properly lubricate it without doing so.

DHP's can be tough, I stock all the mech parts here and we rebuild them all the time. I have the book I can send you but it is too large a file to attach here.

RE: Westinghouse type DHP breaker

Hi Pawdge:
I found a pretty good source for old equipment manuals recently.  I believe you can find what you are looking for at www.electricalmanuals.net.
I saw a DH & DHP Maintenance Manual that has some mech. drawings that were pretty good.  The document number is NP-7410.
Good Luck.

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