DISCHARGE ARRESTER FOR OVERVOLTAGE PROTECTION, COMPRISING AT LEAST ONE DISCHARGE ELEMENT, FOR INSTANCE VARISTOR Russian patent published in 2010 - IPC H01C7/12 

FIELD: electricity.

SUBSTANCE: discharge arrester for overvoltage protection comprises at least one discharge element, for instance varistor, and disconnection device, comprising soldered joint (11), which inside overvoltage protection discharge arrester is related to electric circuit of connection. Via the soldered joint (11), the movable conducting section (12) or movable conducting bridge (22) is connected to discharge element at one side, and at the other side, this conducting section (12) or this bridge (22) is connected to electric external connection of discharge arrester. Disconnection device comprises spring (15), creating a force of pretension, besides, corresponding vector of force directly or indirectly influences conducting section (12) or bridge (22) in direction of disconnection. Thermally connected stop element (17) blocks movable conducting section (12) or movable conducting bridge (22) relative to vector of pretension force, and therefore soldered joint (11) of disconnection device is not exposed to continuous power load.

EFFECT: increased reliability of disconnection with small electric arc in case of malfunction and increased stability of actuation for a long period of time.

15 cl, 4 dwg