纵磁真空灭弧室内电弧形态及其转变

Arc Forms and Transitions in Vacuum Interrupter with an Axial Magnetic Field

从灭弧室实际开断情况出发,阐述了起始收缩型电弧转变成扩散型电弧的条件与机理,并引用美国西屋公司近期的实验研究结果加以分析讨论;最后介绍了设计纵磁触头所需的临界磁场计算公式.

This paper describes arc forms and their transitions in vacuum in-terrupter with an axial magnetic field. The mechanism of transitions from the initial constricted arc to the diffuse one is proposed. By quoting series of experimental re-sults obtained by Westinghouse Science &. Technology Center USA, a formula of critical axial magnetic field is given.