Umkhiqizo
Isiphazamisi se-vacuum se-MV VCB(igobolondo leceramic, I-voltage elinganiselwe: 7.2kV-12kV)
Incazelo emfushane yomkhiqizo:
I-breaker esebenzisa i-vacuum njengendlela yokuqothula i-arc ibizwa ngokuthi i-vacuum circuit breaker.Kulesi sihlukanisi sesekhethi, othintana naye ogxilile nonyakazayo uvalwe ngesiphazamisi sevacuum esivalwe unomphela.I-arc ayisekho njengoba abathintwayo behlukaniswa ku-vacuum ephezulu.Isetshenziswa kakhulu amandla kagesi aphakathi nendawo asuka ku-11 KV kuya ku-33 KV.
Uma i-arc ivulwa ngokuhlukanisa abathintwayo endaweni engenalutho, ukuphazamiseka kwenzeka kuziro wokuqala wamanje.Ngokuphazanyiswa kwe-arc, amandla awo e-dielectric akhuphuka aze afike esilinganisweni sezinkulungwane zesikhathi uma kuqhathaniswa namanye ama-breaker.Izakhiwo ezimbili ezingenhla zenza ama-breaker asebenze kahle, angabi mkhulu futhi ashibhe ngezindleko.Impilo yabo yesevisi nayo inkulu kakhulu kunanoma iyiphi enye i-circuit breaker, futhi cishe akukho ukulungiswa okudingekayo.
Izici
1. I-arc icishiwe esitsheni esivaliwe, futhi i-arc negesi eshisayo ayivezwa.Njengengxenye ezimele, igumbi lokucima i-arc kulula ukulifaka nokuyilungisa.
2. Imvume yokuxhumana incane kakhulu, imvamisa ingaba ngu-10mm, inamandla amancane okuvala, indlela elula nempilo ende yesevisi.
3. Isikhathi sokucisha i-arc sifushane, i-arc voltage iphansi, amandla e-arc mancane, ukulahlekelwa kokuxhumana kuncane, futhi izikhathi zokuphuka ziningi.
Lalela
Lawula ngokuqinile ukuhamba kothintana naye.I-stroke ye-vacuum circuit breaker imfushane.Ngokuvamile, i-stroke ethintwayo ye-vacuum circuit breaker ene-voltage elinganiselwe engu-10 ~ 15kV ingu-8 ~ 12mm kuphela, futhi ukuthintana ohambweni kungu-2 ~ 3mm kuphela.Uma i-stroke yokuxhumana ikhula kakhulu, ukucindezeleka okwedlulele kuzokwenziwa ku-bellows ngemva kokuvalwa kwe-circuit breaker, okubangela ukulimala kwe-bellows futhi kucekele phansi i-vacuum egobolondweni elivaliwe le-breaker circuit.Ungacabangi ngephutha ukuthi ibanga elikhulu lokuvula lizuzisa ukucisha i-arc, futhi ukhuphule ngokungenasisekelo uhambo lokuxhumana lwe-vacuum circuit breaker.
