Determine the maximum symmetrical interrupting capability

Reference no: EM131140587

A 69-kV circuit breaker has a voltage range factor K = 1.21, a continuous current rating of 1200 A, and a rated short-circuit current of 19,000 A at the maximum rated voltage of 72.5 kV.

Determine the maximum symmetrical interrupting capability of the breaker. Also, explain its significance at lower operating voltages.

Reference no: EM131140587

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