Manual calculation of short-circuit current in a complex network may be difficult to perform. Any network configuration can be reduced to a simple equivalent scheme, usually referred to as "positive-sequence equivalent diagram". It consists of an equivalent e.m.f. (E – line to neutral)...
For an induction motor, one can write the formula:
s2=s1*(u1/u2)^2, where:
s1 is the slip when the motor is supplied at the voltage U1 and the load torque has a certain value.
s2 is the slip when the motor is supplied at the voltage U2 and the load torque has the same value.
That means the load...
