SWITCHGEAR WITH SF6 GAS INSULATION Russian patent published in 2014 - IPC H02B13/35 H01H31/32 

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering, to switchgears with SF6 gas insulation. The device contains a movable contact in the upper wire so that is can be moved linearly in regard to the upper contact; a fixed contact in the lower wire. The movable contact is made as a strip contact. The protective means for the movable contact is fixed to the upper wire, it contains a strip contact of the movable part and has an open end that ensures passing of the movable contact through it. The fixed contact is made as a strip contact and it can be connected optionally to the strip contact at the movable part by the movable contact. The protective means for the fixed contact is fixed to the lower wire, it contains the fixed strip contact. An isolating screening element can lock the open end of the protective device for the movable contact optionally and close the end of the movable contact when the movable contact is separated from the fixed contact.

EFFECT: reducing concentration of the electric field between the contacts and prevention of their contamination.

10 cl, 9 dwg