Magnetic “De-ion” air breaker for 2,500–5,000 volts

The theory of quenching an arc by deionizing the normally conducting arc stream, utilizing a gas blast produced by means of an intense transverse magnetic field, is elaborated. Application of design principles dictated by this theory has made it possible to develop a new form of air circuit breaker for 2,500–5,000-volt service. These breakers are completely described, the theory of the De-ion interrupters is discussed, and test results are submitted. The problem of adequately enclosing the breakers is considered and it is shown that excellent interruption can be obtained in an enclosure of small over-all dimensions.