GAS-FILLED SURGE ARRESTER Russian patent published in 2015 - IPC H01J17/02 

FIELD: chemistry.

SUBSTANCE: invention relates to surge arresting equipment and can be applied I elaboration of gas-filled surge arresters with stable breakdown voltage. High stability of breakdown voltage in gas-filled surge arrester, containing anode and cathode, forming discharge gap, and additional electrode, connected with cathode, is provided due to introduction of additional electrode, made of material with nanocluster structure, for instance, of polyacrylnitrile carbon fibres, placed in metal capsule of cylindrical shape with open end, located in cathode, having a hole above open capsule end, towards which directed is working surface of additional electrode, electrically connected with cathode via closed capsule end, with distance h between working surface of additional electrode and cathode, value of discharge gap s and diameter d of hole in cathode being connected by ratios: h/s≥1, d≤s. Stability of breakdown voltage in gas-filled surge arrester is increased additionally due to introduction of screen, separating working surface of additional electrode from discharge gap, located in immediate vicinity from working surface of additional electrode and made of material, "transparent" for electrons and having little impact on configuration of electric field of surge arrester, for instance, porous ceramics, and in case of manufacturing additional electrode from polyacrylnitrile carbon fibres due to application of glass lining on their lateral surfaces.

EFFECT: elaboration of gas-filled surge arresters with stable breakdown voltage.

3 cl, 1 dwg