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Motor Rated BP
3

Motor Rated BP

Motor Rated BP

(OP)
Help!  I am a Gas Engineer and am reading a document with spec for electric motor.  One section states "....unless the full load BP is less than or equal to 85% of the motor rated BP".  Q. Is BP referring to Byass?  If not, what?

Grateful for nay help.  jjgas

RE: Motor Rated BP

It would make sense if "BP" was actually "bhp" for brake horsepower.  This is the power required by the driven equipment at the shaft.  

A common motor sizing spec is to require the motor nameplate horsepower to be equal to the driven equipment's maximum bhp IF the motor has a Service Factor of 1.15.  If the motor has a Service Factor of 1.00, the driven equipment bhp cannot exceed 85% (or 87%) of the motor nameplate hp.  

RE: Motor Rated BP

It seems to be "braking power" , the mechanical power applied by the load to the motor shaft as for stopping it. In America we use BHP for the power measured in Horsepower.

RE: Motor Rated BP

Could be either really, depending on the context. Can you give us more details?

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