VACUUM SWITCH Russian patent published in 2005 - IPC

FIELD: electrical engineering.

SUBSTANCE: vacuum switch includes phase modules mounted on metallic base in which are arranged: drive units with magnetic latch, timing and locking shafts, contact units. Phase modules have supporting insulators in which are arranged: vacuum chambers, contact terminal units and linkage insulators. Shapes of linkage insulator and stationary insulation tubular fragment provide labyrinth air gap between contact terminal units and base; it increases electrical strength of gap. When switch is operated, elastic electrically conducting helices roll out in annular gap between terminal and sleeve of movable contact and it provides multi-point high-conductivity contact.

EFFECT: lowered size, reduced cost, improved operational parameters of switch.

8 cl, 8 dwg