CONTACT FOR VACUUM INTERRUPTER Russian patent published in 2014 - IPC H01H33/664 

FIELD: electricity.

SUBSTANCE: contact for a vacuum interrupter includes many cutouts passing to outer peripheral surface from many positions distanced relatively from the centre of contact surface; lug formed between a pair of adjacent cut-outs so that to minimise mechanical fragility of the part with small width in the lug inducing arc rotation. Each part of cut-out contains the following: the first end part closed and adjacent to the centre; the second end part open and adjacent to outer peripheral surface; the first part of cut-out passing linear from the first end part; and the second part of cut-out passing linear to the second end part bending from the first part of cut-out at the specified angle which is larger or equal to 30 degrees and is smaller or equal to 60 degrees. Distance from the first peripheral surface of the central recessed part of contact to the first part of cut-out is equal to the specified first distance which is more than zero and less or equal to 5 mm.

EFFECT: providing high characteristics of dampening and reducing mechanical deformation of contact which has enough length of the lug upon small contact diameter.

3 cl, 12 dwg