moresimms2
New member
Given a 3-phase wound rotor induction motor with 4 poles, having the rating of 150 hp, 1460 rpm, 2.3 kV, and 50 Hz. The rotor connected in wye and the nominal open-circuit voltage between the slip rings is 530V. find the rotor winding resistance per phase.
So what I know here is:
p = 4
n(m) = 1460 rpm
f = 50 Hz
P = 150 hp = 111.9 kW
for the 2.3kV and 530 V I don't know where should it goes. What's a nominal open circuit voltage between the slip rings? What's the symbol(in equation) to it?
I don't even know how to find the rotor winding resistance per phase and what equation to use. I don't even know what to draw, the per-phase equivalent circuit or the complete per-phase equivalent circuit.
Can you show me the steps and formulas to find this? Answer is not necessary. I really need you help.... thank you!
So what I know here is:
p = 4
n(m) = 1460 rpm
f = 50 Hz
P = 150 hp = 111.9 kW
for the 2.3kV and 530 V I don't know where should it goes. What's a nominal open circuit voltage between the slip rings? What's the symbol(in equation) to it?
I don't even know how to find the rotor winding resistance per phase and what equation to use. I don't even know what to draw, the per-phase equivalent circuit or the complete per-phase equivalent circuit.
Can you show me the steps and formulas to find this? Answer is not necessary. I really need you help.... thank you!