Current asymmetry in resistance-reactance circuits — II

THE value of the ratio of asymmetric to symmetric rms current is an important parameter in the evaluation of asymmetric current effects on electric protective devices. For the simple resistance-reactance circuit (Fig. 1), the ratio of asymmetric to symmetric rms current, for the first current loop, for different values of power factor of the circuit, and for varying points of short-circuit initiation on the voltage wave has been evaluated accurately. The instants of short-circuit initiation on the voltage wave which lead to the maximum values of the ratio of asymmetric and symmetric rms current for different power factors of the circuit can also be found.