PULSE-OPERATED AIR-GAP LIGHTNING ARRESTER Russian patent published in 2000 - IPC

FIELD: high- voltage pulse engineering. SUBSTANCE: arrester has main electrodes mounted on one of walls of hollow solid-insulation body, surface- discharge producing zone enclosed between main electrodes, additional electrode separated from first main electrode by hollow-body wall and connected to second main electrode, and contact members electrically connected to main electrodes and used for connecting first and second main electrodes to components of circuit under protection which are placed at different potentials. Main distinguishing feature of arrester is that surface discharge producing zone is filled with dispersed insulating material resistant to electrical discharge which is placed in insulating shell. EFFECT: improved operating reliability. 15 cl, 9 dwg