| 摘要 |
FIELD: electricity.SUBSTANCE: invention relates to high-voltage vacuum circuit breakers, in which an electromagnet control system of neutral type is used, and in a high-voltage vacuum circuit breaker, movable contacts fixed via an insulator on electromagnet anchors are arranged as rigid, and contacts fixed on high-voltage bushings are arranged as elastic in the form of thin plates. In parallel to elastic contacts there are rigid plates installed in the form of thin plates on high-voltage bushings at the side of movable rigid contacts. Besides, movable rigid contacts are arranged as composite, namely, their first (contacting) part is made of a non-magnet material with low disposition towards diffusion welding in high vacuum, for instance, from molybdenum or tungsten, and their second part is made of a material having high heat conductivity, for instance, from copper, and is installed inside the body of the first part of movable contacts by more than a half of its thickness.EFFECT: higher resistance to effect of mechanical loads with simultaneous increase of passed current of high frequency without increase of weight and dimensions.2 cl, 2 dwg |
