I-low-voltage circuit breaker iyi-switch yemishini kagesi esetshenziselwa ukuthwala nokuphula i-circuit current.Ngokwencazelo yezinga likazwelonke le-GB14048.2, ama-breaker circuit ane-voltage ephansi angahlukaniswa abe ama-circuit breaker abunjiwe kanye nama-breaker circuit.Phakathi kwazo, i-circuit breaker yecala elibunjiwe ibhekisela ku-breaker wesifunda igobolondo layo lenziwe ngezinto zokuvikela ezibunjiwe, futhi ngokuvamile lisebenzisa umoya njengendlela yokucima i-arc, ngakho-ke ngokuvamile ibizwa ngokuthi i-automatic air switch.
I-air circuit breaker isho i-circuit breaker oxhumana nabo bavuleka futhi bavalwe emoyeni ngomfutho womoya.Ngokungafani nokushintsha komoya, ama-vacuum circuit breaker asetshenziswa ngokuvula nokuvala othintana nabo kushubhu ye-vacuum ephezulu.Kumele kuqashelwe ukuthi nakuba ama-circuit breakers aphansi ane-voltage avame ukubizwa ngokuthi ama-automatic air switches, ukushintsha kanye nama-circuit breaker empeleni kuyimiqondo emibili ehlukene.
Ama-circuit breaker aphansi-voltage ngokuvamile asetshenziselwa ukuthwala nokuphula i-current of circuit, futhi angahlukaniswa ngezinhlobo ezimbili: ama-circuit breaker abunjiwe kanye nama-frame circuit breakers.I-circuit breaker yecala elibunjiwe iphinde ibe i-air circuit breaker, isebenzisa umoya njengendawo yokucisha i-arc.Izigebengu zesekhethi ezibunjiwe ngokuvamile zinomthamo omncane futhi zilinganiselwe amandla akhona kunama-breaker circuit breaker, ngakho avikelwa ikesi lepulasitiki.Iziqephu zesekhethi zozimele zinamandla amakhulu kanye namaza okuphuka anesilinganiso esiphezulu, ngokuvamile awadingi izivalo zepulasitiki, futhi zonke izingxenye zigxunyekwe kuhlaka lwensimbi.Endabeni yomjikelezo omfushane noma wamanje ophezulu, i-circuit breaker inekhono elihle lokucisha i-arc futhi ingakwazi ukuhamba ngokuzenzakalelayo, ngakho-ke ivame ukusetshenziselwa ukusebenzisa izinto zikagesi ezifana nokuhluleka kwamandla, ukudluliswa kwamandla, nokuvula nokuvala umthwalo.
Ukukhethwa kwesishintshi somoya kudinga ukunqunywa ngokuvumelana nesimo sangempela.Kuphakanyiswa ukuthi izici ezilandelayo kufanele zicatshangelwe lapho kukhethwa iswishi yomoya:
1.Khetha ngokuya ngesilinganiso esiphezulu samandla asetshenziswa ekhaya ukuze ugweme ukukhubeka njalo ngenxa yomthwalo ongaphezu kwamandla.
2. Khetha ama-breaker circuit amafushane ahlukene noma amaswishi omoya ngokuvumelana namandla ezinto zikagesi ezihlukene ukuze ugweme ukukhubeka ngenxa yamandla amaningi kakhulu ngesikhathi uqala.
3.Khetha izivikeli zokuvuza ze-1P kuwo wonke amasekethe egatsha ukuze uthuthukise ukuphepha kwezinto zikagesi.
I-4.I-Partitioning kanye ne-branching, izindawo ezahlukene zingahlukaniswa ngokusho kwephansi noma izinto zikagesi, ezilungele ukuphathwa nokugcinwa.Ngokuvamile, ukukhethwa kwe-switch yomoya kudinga ukwenziwa ngokuvumelana nesimo sangempela.Ikakhulukazi, uhlobo, amandla, inani kanye nezinye izici zemishini kagesi kufanele kubhekwe ukuze kuqinisekiswe ukuzinza nokuphepha kwemishini yokuphakela amandla.
Ngaphezu kwamaphuzu angenhla, izici ezilandelayo kufanele futhi zicatshangelwe lapho kuthengwa iswishi yomoya: 6. Imvelo yokusebenzisa: Isilinganiso samanje se-air breaker sihlobene nezinga lokushisa lendawo yokusebenzisa.Uma izinga lokushisa le-ambient liphezulu, umthamo olinganiselwe we-air breaker uzokwehla, ngakho-ke i-air breaker kufanele ikhethwe ngokuya ngendawo yokusetshenziswa yangempela.7. Ukuqina: Iswishi yomoya ivame ukusetshenziswa njalo, ngakho-ke kuyadingeka ukukhetha umkhiqizo onekhwalithi enhle nokuqina okuqinile ukuze ugweme ukushintshwa nokugcinwa njalo.8. Isithunzi somkhiqizo: Uma uthenga ama-compressor komoya, kufanele ukhethe leyo mikhiqizo yomkhiqizo enegama eliphezulu nedumela elihle ukuze uqinisekise ikhwalithi kanye nesevisi yangemuva kokuthengisa.9. Ukungaguquguquki komkhiqizo: Ngaphansi kokulungiselelwa okufanayo kwempahla kagesi, kuyanconywa ukuthi usebenzise uhlobo olufanayo lweswishi yomoya ukuze kugwenywe ukudideka nokuphazamiseka ngesikhathi sokusetshenziswa nokulungiswa.10. Ukusebenziseka kalula kokufakwa nokugcinwa kahle: Lapho ukhetha iswishi yomoya, ukunethezeka kokufakwa nokugcinwa kahle kufanele
Isikhathi sokuthumela: Jul-06-2023