Isolated phase buswork fan motor

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SUMMARY

The discussion centers on finding a replacement for a specialized fan motor originally manufactured by Canadian General Electric, with the model number 712-903074. This motor operates on induction from attached bus work, requiring a minimum excitation of 500 amps and a maximum of 5000 amps. Participants suggest exploring alternatives such as standalone fans, either single-phase or polyphase, and recommend checking with surplus motor suppliers, particularly substation or power plant contractors, for potential replacements.

PREREQUISITES
  • Understanding of electromagnetic motor specifications
  • Knowledge of phase induction motors
  • Familiarity with bus work systems in electrical engineering
  • Experience with sourcing industrial electrical components
NEXT STEPS
  • Research standalone fan motor options suitable for bus work applications
  • Investigate surplus motor suppliers and contractors in the power industry
  • Learn about the specifications and performance of single-phase and polyphase motors
  • Explore the operational principles of induction motors and their applications
USEFUL FOR

Electrical engineers, maintenance technicians, and procurement specialists seeking to replace or source specialized fan motors for industrial applications.

kman699
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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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