DISCHARGER FOR OVERVOLTAGE PROTECTION AND ELECTRIC DEVICE WITH GAS ISOLATION Russian patent published in 2014 - IPC H01T4/16 H02B13/25 

FIELD: electricity.

SUBSTANCE: discharger for overvoltage protection includes switching unit connected to electric equipment with gas isolation where isolating gas is sealed, and switching limit voltage of discharger for overvoltage protection to lower limit voltage than defined critical voltage for low temperatures, indicating permissible voltage causing breakdown when isolating gas becomes liquefied.

EFFECT: prevented deterioration of isolation parameters and breakdown without the use of external electric heat source during outdoor operation at low temperatures.

8 cl, 5 dwg