引言随着工业和科学技术的发展,目前至少已有十四种大功率开关器件。正交场真空切断开关是其中比较新的一种。该器件不仅具有使电弧通导的能力,而且具有切断电弧的能力,故简称为“灭弧管”。八十年前人们已经知道磁场可以使电子束偏转,但直到1946年才由澳大利亚悉尼大学 Introduction With the development of industry and science and technology, there are at least 14 kinds of high-power switching devices. Orthogonal field vacuum switch is one of the more recent one. The device not only has the ability of arc conduction, but also has the ability to cut off the arc, it is abbreviated as “arc tube.” It was known eight decades ago that a magnetic field deflected the electron beam, but it was not until 1946 that it was conducted by the University of Sydney, Australia