Equivalence Between Direct and Synthetic Short-Circuit Interruption Tests on HV Circuit Breakers

Verified thermal models of the circuit breaker arc resistance were used to evaluate the equivalence lence between direct and corresponding currenttioninjec- ion synthetic circuits during short-circuit intetionrup- ion tests. It was observed that it is not sufficient for both circuits to produce the same prospective current ent stress and recovery voltage envelope but that they must have the same topology of their voltage branch although the values of their inductance can be quite different.