Isolated phase buswork fan motor

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A user is seeking a replacement for a specialized fan motor powered by induction from bus work, originally manufactured by GE. The motor specifications include a minimum excitation of 500 amps and a maximum of 5000 amps. Suggestions include considering a standalone fan instead of a phase induction model and checking with surplus suppliers or contractors from substations and power plants. The complexity of the original design is noted, particularly regarding the fan's speed dependency on bus work loading. The search for a suitable replacement continues.
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I am looking for a replacement for a fan motor the runs off of induction from attached bus work. It is very specialized and I have not been able to find a manufacture. It was made by GE but not for years

The original motor:
MOTOR, ELECTROMAGNETIC;CANADIAN GENERAL ELECTRIC,
MFG NO # 712-903074,MINIMUM EXCITATION 500 AMPS,
MAXIMUM EXCITATION 5000 AMPS

any help would be great. see pictures
 

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Wow. That's some motor.

If it were me, I would be looking for a fan that in not a phase induction one. Maybe just a stand alone fan (single or polyphase).

But I'll keep searching with you for a replacement.

There may be a surplus motor somewhere. You might want to check with substation or power plant contractors.
 
the speed of the fan depends on the bus work loading. not sure why they made it over complicated.
 

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