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Thermal capacity of liquid resistance started motor

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thehoover

thehoover

Electrical
Joined
Nov 18, 2002
Messages
5
Location
AU
How would I calculate the Kjoule thermal capacity for a rotor starter.

Rotor current=1805A
Rotor Voltage = 1335V
Stator voltage= 11000V
Stator current=243.1A
Motor rating 4000kW
3 phase Y
cos 0.89
Starting torque 200%
 
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Since kJoule=kWattsecond, the time needs to be given or estimated. Some idea about the motor prospective acceleration curve would help.
 
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The run up time for the liquid resistance starter is 10 seconds.
 
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Possibly applicable discussion/links at thread237-24735
 
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