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Pretentious measurements of self-extinguishing performances at gas arrester developmentPregelj, Andrej ...Gas filled cells in which the gas molecules can be ionized by high voltage are known under the name "gas discharge tube ". Special constructions of such cells - called gas arresters - are used for ... protection against lightning and other unexpected overvoltages. Their electrodes are connected between network conductors and the earth. At the moment of over-voltage such protective elements become conductive, and the destructive energetic strokes are led into the earth. To understand the gas arrester's performances and working principle there are two important phenomena which have to be studied: arc ignition and arc extinguishing. In the last decade special attention hus been paid to self-extinguishing of the arc in a celi. At defined applications where gas arresters are used in low-voltage power supply networks the electric currents can reach from 100 up to 5000 A. In standard arrester cells these currents remain alive also after the ignition by lightning stroke and they can cause great injuries in protection elements. Therefore it is necessary to develop gas tubes which are able to extinguish any current as quickly as possible after leading-offthe main energy of the lightning stroke; as a role the sine current should be extinguished at first passage through zero. For a standard test the sample arrester has to be connected to a mains voltage source with sufficient current capability and then an ignition current pulse, similar to a lightning stroke, is superimpased on said sine voltage of 50 Hz. The contribution represents the gas arrester's working principle; different constructions; the self-extinguishing phenomenon; problems connected with measurements of this abilit; the development ofa test line and some measurement results.Vir: Proceedings (Str. 207-212)Vrsta gradiva - prispevek na konferenciLeto - 2004Jezik - angleškiCOBISS.SI-ID - 28394757
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Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Pregelj, Andrej | 01737 |
Pirih, Andrej | 06963 |
Štagoj, Aleš | 23224 |
Bizjak, Martin, 1947- | 03930 |
Murko, Vladimir, 1942- | 11667 |
Brecelj, Franc | 01731 |
Vir: Osebne bibliografije
in: SICRIS
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