Kuyini i-Vacuum Circuit Breaker (VCB)

I-vacuum circuit breaker iyithuluzi elibalulekile elisetshenziselwa ukulawula nokuvikela ugesi ezinhlelweni zamandla. Isebenza ngokuphazamisa noma ukuvula isekethe ngaphansi kwezimo ezingavamile noma zamaphutha, njengesekethe esifushane noma ukulayisha ngokweqile. Ngokungafani nama-circuit breaker endabuko, ama-VCB asebenzisa i-vacuum ukucisha i-arc eyakhiwe ngesikhathi sokuphazamiseka. Le ndlela ethuthukisiwe iqinisekisa ukuvikelwa kwesekethe okuthembekile nokusebenzayo, okwenza i-VCB ibe ukukhetha okuthandwayo kuzo zonke izimboni ezahlukene.

Ngaphezu kwezici zayo zokuphepha ezingenasici, i-VCB inikeza izinzuzo eziningana. Okokuqala, ziyakwazi ukucima i-arc ku-vacuum ngaphandle kwesidingo sanoma iyiphi indlela yokuvikela eyengeziwe, okuvumela umklamo omncane odinga ukulungiswa okulinganiselwe. Ngaphezu kwalokho, isikhathi sazo sokuphendula ngokushesha (esilinganiswa ngama-microsecond) siqinisekisa ukuvikelwa kwamaphutha okuqhubekayo, sivikela imishini kagesi ebalulekile. Kuyaqondakala ukuthi i-VCB inokuphila isikhathi eside kwesevisi kuneziphuli zesekethe zendabuko, ayinawo amagesi ayingozi njenge-SF6, futhi inobungani kakhulu nemvelo.

Ukuguquguquka kwama-vacuum circuit breaker kuwenza afaneleke ukusetshenziswa okuhlukahlukene. Kungakhathaliseki ukuthi kuseziteshini zikagesi, emapaki ezimboni noma ezakhiweni zokuhlala, ama-VCB ahlangabezana nezidingo eziningi ze-voltage kanye nezamanje. Kusukela ekuvikeleni ama-transformer nama-generator kuya ekuvimbeleni imililo kagesi, la ma-circuit breaker adlala indima ebalulekile ekugcineni ubuqotho nokuphepha kwezinhlelo ezinkulu zikagesi.

Ngamafuphi, ama-vacuum circuit breaker ayingxenye ebalulekile yengqalasizinda kagesi yesimanje. Amandla awo okuvikela izinhlelo zikagesi emaphutheni, kanye nomklamo wawo omncane kanye nezici ezinobungani nemvelo, kuwenza abe ukukhetha kokuqala ezimbonini ezahlukene. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, ama-VCB ngokungangabazeki azodlala indima ebalulekile ekuqinisekiseni ukuphepha nokusebenza kahle kwezinhlelo zikagesi ezishintshayo.