Iyini iswishi ehlukanisayo engaqhumi ngaphansi komhlaba?uyini umphumela?

Isinqamuli (isinqamuli) sisho ukuthi uma sisendaweni engaphansi, kunebanga lokuhlukanisa kanye nophawu olusobala lokunqamula phakathi koxhumana nabo abahlangabezana nezidingo ezishiwo;uma isendaweni evaliwe, ingathwala isimanje ngaphansi kwezimo ezijwayelekile zokujikeleza kanye nezimo ezingavamile phakathi nesikhathi esibekiwe (njenge-short-circuit) idivayisi yokushintsha yamanje.
Iswishi ehlukanisayo esikhuluma ngayo ngokuvamile ibhekisela ekushintsheni okuhlukanisayo okunamandla kagesi aphezulu, okungukuthi, inkinobho ehlukanisayo enevoltheji elinganiselwe engu-1kv nangaphezulu, evame ukubizwa ngokuthi yiswishi ehlukanisayo, okuwumshini kagesi osetshenziswa kakhulu endaweni ephezulu. Imishini yokuguqula i-voltage.Futhi isakhiwo silula, kodwa ngenxa yobuningi bokusetshenziswa kanye nezidingo eziphezulu zokuthembeka komsebenzi, kunomthelela omkhulu ekwakhiweni, ekusungulweni nasekusebenzeni okuphephile kweziteshi ezingaphansi kanye nezitshalo zamandla.Isici esiyinhloko sokushintsha kommese ukuthi alikho ikhono lokucima i-arc, futhi lingahlukanisa kuphela futhi livale isifunda ngaphandle komthwalo wamanje.
I-Isolation switch evame ukusetshenziswa ekushintsheni kwezimayini zamalahle:
I-1) Ngemva kokuvula, sungula igebe elithembekile lokufaka ugesi, bese uhlukanisa izinto zokusebenza noma izintambo ezidinga ukulungiswa kugesi ngendawo yokunqanyulwa okusobala ukuze kuqinisekiswe ukuphepha kwabasebenzi bokulungisa kanye nemishini.
2) Ngokwezidingo zokusebenza, shintsha umugqa.
3) Ingasetshenziselwa ukuhlukanisa nokuhlanganisa imisinga emincane emgqeni, njengokushaja kwamanje kwamabhasi, amabhasi, izixhumi, izintambo ezimfishane, i-capacitive current of switch balancing capacitors, i-circulating current lapho kushintshwa amabhasi amabili kanye nenjabulo. yamanje yama-voltage transformers Linda.
I-4) Ngokusho kwesimo esithile sezinhlobo ezahlukene zesakhiwo, singasetshenziswa ukuhlukanisa nokuhlanganisa amandla amanje okuvusa amadlingozi we-transformer umthamo othile.
Ngokwezindlela ezihlukene zokufaka, amaswishi okuhlukanisa anamandla kagesi aphezulu angahlukaniswa abe amaswishi angaphandle anamandla kagesi aphezulu kanye namaswishi okuhlukanisa anamandla kagesi aphezulu.Amaswishi angaphandle ahlukanisayo anamandla kagesi aphezulu abhekisela kumaswishi ahlukanisayo anamandla kagesi aphezulu angamelana nemiphumela yomoya, imvula, iqhwa, ukungcola, ukujiya, iqhwa nesithwathwa esikhulu, futhi afaneleka ukufakwa kumasimu.Ingahlukaniswa ibe isixhumi sekholomu eyodwa, isinqamuli sekholomu ekabili kanye nesinqamuli sekholomu emithathu ngokuya ngesakhiwo se-struts yayo evikelayo.Phakathi kwazo, ukushintshwa kommese wekholomu eyodwa kusebenzisa ngokuqondile isikhala esime mpo njengendawo yokushisa kagesi yokuphuka ngaphansi kwebha yebhasi engaphezulu.Ngakho-ke, inezinzuzo ezicacile zokulondoloza indawo yaphansi, ukunciphisa izintambo zokuhola, futhi ngesikhathi esifanayo, isimo sokuvula nokuvala sicacile ngokukhethekile.Esimeni sokudluliswa kwamandla kagesi we-ultra-high, umphumela wokonga indawo yaphansi ubaluleke kakhulu ngemva kokusetshenziswa komshini wommese wekholomu eyodwa esiteshini.
Emishinini ene-voltage ephansi, ilungele ikakhulukazi amasistimu okusabalalisa amandla esitheminali samandla aphansi njengezakhiwo zokuhlala nezakhiwo.Imisebenzi esemqoka: ngokuphuka komthwalo kanye nolayini wokuxhuma
izici
1. Lapho izinto zikagesi zilungiswa kabusha, kunikezwa isikhawu sikagesi, futhi kuyindawo esobala yokunqamula ukuze kuqinisekiswe ukuphepha komuntu siqu kwabasebenzi bokunakekela.
2. Iswishi yokuhlukanisa ayikwazi ukusebenza ngomthwalo: ayikwazi ukusebenza ngomthwalo olinganiselwe noma umthwalo omkhulu, futhi ayikwazi ukuhlukanisa futhi ihlanganise umthamo wamanje kanye nomthamo wesifunda esifushane, kodwa labo abanegumbi lokucisha i-arc bangasebenza ngomthwalo omncane kanye nomugqa ongalayishi. .
3. Ngokujwayelekile ukusebenza kokudlulisa amandla: qala ngokuvala iswishi ehlukanisayo, bese uvala i-circuit breaker noma inkinobho yokulayisha;lapho iswishi yokuhlukanisa ivaliwe: qala unqamule isihlukanisi sesifunda noma inkinobho yokulayisha, bese unqamula iswishi ehlukanisayo.
4. Ukukhethwa akuhlukile kwezinye izinto zikagesi, konke okumele kulinganiselwe i-voltage, i-current rated, i-dynamic stable current, i-thermal stable current, njll. kumele ihlangabezane nezidingo zesicelo.
Umsebenzi wokushintsha okuhlukanisayo uwukunqamula umjikelezo we-no-load current, ukuze okokusebenza okuzolungiswa kanye nokunikezwa kwamandla kube nendawo esobala yokunqamula ukuze kuqinisekiswe ukuphepha kwabasebenzi bokunakekela.Iswishi ehlukanisayo ayikwazi ukunqamula umthamo wamanje kanye nomjikelezo omfushane ngaphandle kwedivayisi yokucisha i-arc ekhethekile., ngakho-ke umshini wokuhlukanisa ungasetshenziswa kuphela lapho isifunda sinqanyulwa yi-breaker circuit.