Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine

• Main Authors: YUE FULIANG, HUANG AIMIAO
• Format: Patent
• Language: Chinese; English
• Published: 26.12.2012
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The utility model discloses a kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine and relates to an electrical element. By adoption of a double-pole dual-breaker moving contact and a magnetic blow-out grid piece arc extinction device, the operating current on-off capacity is over 630A. Housings of the arc extinction device are respectively arranged at the upper and lower ends of an insulating seat; the housings have the functions of opening and closing the upper and lower covers of the shell; the housings and the insulating seat form a closed space; and the magnetic blow-out grid piece arc extinction device is positioned in the closed space. The magnetic blow-out grid piece arc extinction device comprises the housings, arc extinction grid pieces, arc striking plates, magnetic blow-out coils, magnetic iron cores and magnetic plates. When a switching-off arc is under the action of an electric field, the arc root is shifted to arc striking plates equipotential to the arc, the mag