Isimiso sokusebenza sokuhlukanisa iswishi - umehluko phakathi kokuhlukanisa i-switch kanye ne-circuit breaker

Sethula i-ukuhlukanisa ukushintsha: I-Isolation switch ingenye yezinto zikagesi ezisetshenziswa kakhulu ezintweni ezishintshayo ezine-voltage ephezulu.Njengoba igama liphakamisa, kufanele idlale indima yodwa kusekethe.Umgomo wayo wokusebenza kanye nesakhiwo kulula, kodwa ngenxa yesidingo esikhulu kanye nezidingo eziphakeme zokuzinza komsebenzi, kunomthelela omkhulu ekwakhiweni, ekudaleni nasekusebenzeni okuphephile kweziteshi ezingaphansi nezitshalo zikagesi.Isici esiyinhloko sesango lamathuluzi ukuthi alikho ikhono lokucisha i-arc, futhi lingahlukaniswa kuphela futhi livalwe ngaphansi kwesisekelo sokuthi akukho mthwalo wamanje.I-Isolation switch (evame ukwaziwa ngokuthi "iswishi yommese"), ngokuvamile ibhekisela ekushintsheni kwe-high-voltage isolation, okungukuthi, iswishi yokuhlukanisa enesilinganiso samanje esingaphezu kuka-1kV ngokuvamile ibizwa ngokuthi i-isolation switch, futhi ingenye esetshenziswa kakhulu. izinto zikagesi ezisezintweni ezishintshayo zamandla kagesi aphezulu.Umgomo wayo wokusebenza kanye nesakhiwo kulula, kodwa ngenxa yesidingo esikhulu kanye nezidingo eziphakeme zokuzinza komsebenzi, kunomthelela omkhulu ekwakhiweni, ekudaleni nasekusebenzeni okuphephile kweziteshi ezingaphansi nezitshalo zikagesi.Isici esiyinhloko se-switch ye-isolation ukuthi ayinakho ikhono lokucima i-arc, futhi ingahlukanisa kuphela futhi ivale isifunda ngaphansi kwesisekelo sokuthi akukho mthwalo wamanje.Amaswishi okuhlukanisa asetshenziselwa ukushintsha ukuxhumana kwesekethe noma ukuhlukanisa imizila noma okokusebenza emithonjeni yamandla.Ayinawo amandla okuphazamisa futhi inganqanyulwa kuphela emzileni nezinye izisetshenziswa ngaphambi kokusebenza.Ngokuvamile iqukethe i-interlock ukuvimbela ukusetshenziswa kabi kweswishi ngaphansi komthwalo, futhi ngezinye izikhathi kufanele ithengiswe ukuze kugwenywe ukuvula iswishi ngaphansi kwesenzo sikazibuthe omkhulu onephutha.Isimiso sokusebenza sokushintsha kokuzihlukanisa: Ngokuvamile, isethi yokushintshashintsha kokuhlukanisa ifakwe ezinhlangothini zangaphambili nangemuva ze-breaker circuit, inhloso ukuhlukanisa i-breaker circuit kusukela ekunikezeni amandla, okuholela endaweni ecacile yokunqamula;njengoba ukukhethwa kokuqala kwe-circuit breaker kubhekisela ku-oil circuit breaker, i-oil circuit breaker kufanele igcinwe njalo.Kukhona iphuzu lokunqamula elisobala, elivumela ukulungiswa;ngokuvamile, ikhabhinethi yokuphuma inikwe amandla kusuka kubha yebhasi engenhla ngokusho kwekhabhinethi yokushintsha, futhi i-breaker circuit kumele ihlukaniswe nomthombo wamandla, kodwa ngezinye izikhathi kungase kube nezingcingo ngemuva kwe-breaker circuit, njengamanye ama-loops, ama-capacitor, njll. imishini, ngakho-ke isethi yokushintshashintsha kokuhlukanisa nayo iyadingeka ngemuva kwe-breaker circuit.Ukhiye weswishi yokuhlukanisa ukuvikela ngokuthembekile izingxenye okufanele zicishwe kanye nezingxenye ezinikwe amandla zemishini yokusabalalisa amandla kagesi aphezulu ukuze kuqinisekiswe ukuphepha komsebenzi wokulungisa.Oxhumana nabo beswishi yokuhlukanisa bonke bavezwa emoyeni, futhi indawo yokunqamula iyabonakala.Iukuhlukanisa ukushintshaayinayo idivayisi yokucisha i-arc futhi ayikwazi ukusetshenziselwa ukuphazamisa amandla amanje okulayisha noma isiyingi esifushane.Uma kungenjalo, ngaphansi kwesenzo se-voltage ephezulu, indawo yokunqamula izokhiqiza ukuhlukaniswa kukagesi okusobala, okunzima ukucisha ngokuzimela, futhi kungase kubangele i-arcing (isihlobo noma i-interphase short circuit) futhi ishise imishini, ibeke engozini ukuphepha kwempilo.Lena ingozi enkulu ebizwa nge-"load-pull disconnector".Ama-Isolators angaphinda asetshenziselwe ukushintsha ukusebenza kwezinye izifunda ukuze kuguqulwe indlela uhlelo olusebenza ngayo.Umehluko phakathi kweswishi ehlukanisayo kanye ne-circuit breaker: Izinqamuli zesekethe Izinqamuli zesekhethi Ama-voltage aphezulu kanye nezinqamuli zesekethe kagesi aphansi ziyithuluzi lokuvikela likagesi elinohlobo lwedivayisi yokucima i-arc.Igama eliphelele le-air switch i-gas low-voltage circuit breaker, esetshenziswa kakhulu kumasekhethi aphansi-voltage.Ngenxa yokuthi icisha i-arc esekelwe kugesi njengento, ibizwa ngokuthi i-gas low-voltage circuit breaker, noma inkinobho yomoya ngamafuphi, futhi ukusatshalaliswa kwethu kwamandla okwakha ekhaya ngokuyisisekelo kuwukushintsha komoya.Isolation switch iyisisetshenziswa sikagesi esishintshayo esine-voltage ephezulu, esetshenziswa kakhulu kumasekhethi anamandla kagesi.Lesi i-switchgear ngaphandle kwemishini yokucisha i-arc.Ukhiye usetshenziselwa ukunqamula isekethe ngaphandle komthwalo wamanje futhi uhlukanise ukunikezwa kwamandla ukuze kuqinisekiswe ukugcinwa okuphephile kwezinye izinto zikagesi.Uma ivaliwe, ingathembeka ngokuya ngomthwalo ojwayelekile wamanje kanye nephutha lesiphambeko lesifunda esifushane.Njengoba kungekho mishini yokucisha i-arc ekhethekile, umthamo wamanje wokulayisha kanye nowesifunda esifushane awukwazi ukunqanyulwa.Ngakho-ke, ukushintshwa kokuhlukanisa kungenziwa kuphela lapho i-breaker yesifunda inqanyuliwe, futhi umsebenzi wokulayisha uvinjelwe ukugwema imishini eyingozi kanye nezingozi zokuphepha.Ama-voltage transformer kuphela, izibambisi kanye nama-full-load transformer amanje amandla awo okuvusa amadlingozi angadluli i-2A, futhi i-current ingeqi ku-5A, sebenzisa ama-switch switches ukuze isebenze ngokuqondile imigqa engalayishiwe.Izinqamuli zesekethe namaswishi okunqamula kufanele asetshenziselwe amandla amaningi, ama-circuit breaker aphonsa umthwalo wamanje (iphutha), namaswishi okunqamula okudala indawo ehlukile yokunqamula.