Axial magnetic field vacuum interruptor. Contribution to the development

Of the various technical systems combined representing vacuum interrupters, three have been analyzed concerning their inherent potential: (1) insulating system in vacuum-the withstand voltage of the tubular gap between the live contact and metal housing may be increased by introducing a tubular shield acting also as part of a capacitive voltage divider; (2) insulating system outside of vacuum-the withstand voltage may be increased by mounting a tubular insulator on the ceramic end plate surrounded only the metal parts outside of the housing; and (3) axial magnetic field (AMF) producing system-application of a new structure being adaptable concerning the intensity and homogeneity of the produced AMF to the current to be interrupted