It is 3 phase 480 volts on a 12-lead reconnectable generator end. There is no other load on the generator.
Question; Where do you get the 40hp=45 Amps and why do you multiply by 3?
How would a PMG or other excitation boost help the application?
I have a customer who wants a generator to start a 40HP 480V electric motor. I used this formula Motor HP xKva per HP x (1000/(Volts x1.73)) = LRA
So:
40x5.59x(1000/480x1.73))
40 x 5.59 x (1000/830.4)
223.6 x 1.204
=269 Amps or 178Kw
I then use a manufacturer's caluclating program and come up...
