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GE Elec Motor from the 50's Heating Load?

GE Elec Motor from the 50's Heating Load?

GE Elec Motor from the 50's Heating Load?

(OP)
Hi,

I have been asked to have a contractor to place a sound encloser around a 50's model GE motor that was 2000 hp and sometime in the last 12 years was rewound to be 2500 hp.  Since it was rewound GE will not give me even a suggestion of the heating load and the amount of air needed to cool it.   What would be the best way to calculate this.

thanks Trav

RE: GE Elec Motor from the 50's Heating Load?

If whatever the motor is driving is outside of the enclosure 20% of the input power is probably a reasonable first SWAG.

If you want to do it a bit more scientific measure the surface temperature and set up a simple heat transfer model.  Solve for the heat load.

RE: GE Elec Motor from the 50's Heating Load?

My understanding of rewound rotors and stators is that a slightly heavier guage wire is used meaning less heat generated, therefore, use the original heat load to be on the safe side.

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