The impact of SF/sub 6/ upon power switchgear technology. I. SF/sub 6/ switch implications

A successful circuit breaker needs not only a suitable interrupter design but also a suitable medium in which to form and quench the arc. SF/sub 6/ is increasingly being used in circuit breakers as an alternative to oil and air. The author discusses the implications on switching technology of SF/sub 6/ use. The author discusses current interruption concepts and then discusses the distinctive properties of SF/sub 6/. These properties have promoted the evolution of new forms of interrupters which are described by the author. The performance capabilities of the SF/sub 6/ interrupters are discussed.<
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