GAS ARRESTER WITH METAL ENCLOSURE AND CONDUCTIVE LAYER APPLIED ON AN INSULATING ELEMENT

Subject of the invention is a gas arrester with metal enclosure and conductive layer applied on an insulating element, which includes a metal enclosure (1) acting as the external electrode, an internal electrode (2), a primary insulating element (3), a secondary insulating element (5), a gas filling featuring a gas mixture inside the metal enclosure (4) and implemented with a conductive layer (6) on the primary (3) or secondary (5) insulating element in the form of traces (6) based on carbon, preferably graphite. The specified layer which is made in the form of traces on the primary or secondary insulating element (3, 5) is of key importance for the response during the voltage increase on the electrodes of the gas arrester and ensures faster response times than state of the art devices. In cases when on the electrodes of the gas arrester the voltage increases at a rate faster than 1 kV/us the result is ignition under lower voltages than provided by state of the art gas arresters with metal enclosure, while the dissipation of ignition voltages required for the ignition of the gas arrester according to this invention is smaller. Predmetni izum razkriva plinski odvodnik s kovinskim ohišjem in z nanosom prevodne plasti na izolirnem elementu, ki vključuje kovinsko ohišje (1), ki ima funkcijo zunanje elektrode, notranjo elektrodo (2), primarni izolirni element (3), sekundarni izolirni element (5), plinsko polnjenje s plinsko mešanico v notranjosti kovinskega ohišja (4) in je izdelan z nanosom prevodne plasti (6) na primarnem (3) ali sekundarnem (5) izolirnem elementu v obliki sledi (6) na osnovi ogljika, prednostno grafita. Omenjeninanos, ki ga izvedemo v obliki sledi na primarni ali sekundarni izolirni element (3, 5), ima ključen vpliv na odziv pri naraščanju napetosti na elektrodah plinskega odvodnika in zagotavlja hitrejše odzivne čase kot jih zagotavljajo naprave po stanju tehnike. V primerih hitrejšega naraščanja napetosti na elektrodah plinskega odvodnika od 1kV/us pride do vžiga pri nižji napetosti kot to zagotavljajo plinski odvodniki s kovinskim ohišjem po stanju tehnike, raztros vžignih napetosti potrebnih za vžig plinskegaodvodnika po predmetnem izumu pa je manjši.