Comparison of test circuits for high-voltage circuit breakers by numerical calculations with arc models

Abstract

The authors use a physical arc model to compare the switching behaviors of circuit breakers in a direct and two synthetic test circuits with a computer program. It was found that not only the shape of the transient recovery voltage, but also the topology of the electrical network that supplies the transient recovery voltage after current interruption is of importance in terms of the interrupting capability of SF/sub 6/ and air-blast circuit breakers. >