Switching of Extra-High-Voltage Circuits I-System Requirements for Circuit Breakers

Abstract
The dynamic growth of utility systems has resulted in demands for power circuit breakers with faster interrupting times as well as higher interrupting capacities and continuous-current loadings. The rapid speed at which 500-kv system plans have developed and the current, interrupting megavrolt-ampere (mva), and insulation requirements which these systems have imposed on the circuit breaker designer are particularly significant.

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