IEEE 112 Testing

[magneticted]

Hi guys can you tell me the difference between testing motors between IEEE 112 Method F & F1

 

[petronila]

Hello magnetited,

In North America the electric motors are tested in accordance with IEEE 112, But you can find this methods: B,C,E,E1,F and F1.

In The F method is not neccesary to couple up the motor and a is necesarie to perform a Dual-Frecuency heat run and use
stray loads.

The F1 method use an assigned value to the load loss.

Regards

Petronila.

 

[TommyOO7]

Basically in Method F, Stray Losses are measured, and in Method F1 are calculated or assumed!

Is that correct?

 

[aolalde]

Both are Test Methods for Efficiency based on calculation of the performance at various loads by solution of the equivalent circuit.
As Tommy007 said; On method F the stray-load loss is directly meassured. For method F1 stray-load loss is assumed