I-Miniature circuit breaker, esetshenziselwa ukuvikela ukuphepha kwakho siqu

I-Miniature circuit breaker iwuhlobo lwe-switchgear yesekethe ye-voltage ephansi, esetshenziselwa ukuvikela imishini kagesi nokuphepha komuntu siqu.

Ama-breaker circuit amancane angafakwa ngaphakathi endlini (isibonelo, emakhabetheni okusabalalisa) noma ngaphandle (isibonelo, emabhokisini okusabalalisa).

1. Kunezinhlobo ezintathu zezindlela zokufaka: ezilungisiwe, eziphathwayo nezimisiwe.

2. Isilinganiso samanje se-circuit breaker sihlukaniswe ngezinhlobo ezingu-N kanye no-P, u-N ungowamanje onesilinganiso esiphezulu samanje, u-P owamanje onesilinganiso esincane esilinganiselwe, futhi u-N uhlukaniswe ngo-L, L, N ngu-1,2 -3A, futhi B ingu-2A ngokuya ngesilinganiso samanje.

Ama-breaker circuit amancane angasetshenziswa ezindaweni zokuhlala, izakhiwo zamahhovisi, amafektri nakwezinye izindawo.

I. Ukuhlukaniswa kwama-circuit breaker amancane.

(1) Kuhlukaniswa Nge-Arc Extinguishing Medium: Kunezinhlelo ezintathu zokucisha i-Arc: Umoya, Ivacuum noma I-Air-vacuum Mixing.

Amasistimu omoya afanele imigqa yokusabalalisa yamandla aphansi we-AC anamavoltage akalwe afika ku-690V futhi awakwazi ukumelana nanoma yiluphi uhlobo lokwehluleka kwesiyingi esifushane lapho kuxhunywe imigqa engathathi hlangothi (N) kanye neqanda (D), njengoba kunamanani amakhulu amagesi angasebenzi ngaphakathi. umoya.

Ngaphezu kwalokho, amasistimu anama-voltage akalwe angu-690V (N) noma ngaphezulu (ngaphezu kuka-1800V) awakwazi ukudlula amapayipi noma amapuleti ensimbi.

Isistimu ye-vacuum ifanele i-voltage elinganiselwe ku-660V, umthwalo ophezulu futhi awukho umugqa wephutha ophansi.

(2) Ihlukaniswa ngendlela yokusebenza: kunezinhlobo ezimbili: ukusebenza ngesandla kanye nokusebenza okuzenzakalelayo.

Ukusebenza okwenziwa mathupha: okusetshenziselwa ukuxhuma noma ukwephula isekethe evamile kanye nesekhethi engavamile, u-opharetha owenziwe ngesandla usebenzisa ukushintsha, isibambo noma inkinobho ukuze kuzuzwe.

Ukusebenza okuzenzakalelayo: ngokusebenzisa inkinobho ye-circuit breaker inkinobho yokulawula, ukufeza imisebenzi edingekayo.

(3) Ihlukaniswe ngokwesimiso sokusebenza: ngokwendlela yokusebenzisana phakathi koxhumana nabo kanye nenqubo yesenzo, zihlukaniswe zibe izinhlobo ezimbili;

Enye iwumshini;enye i-electrodynamic.

I-Mechanical circuit breaker isetshenziselwa ikakhulukazi i-50HZ AC, 660V DC, isistimu kagesi ephezulu.

I-Electrodynamic action circuit breaker isetshenziswa kakhulu ohlelweni lwe-AC 1000V noma ulayini wokusabalalisa wamandla aphansi;ezinye izinhlobo ezinjengama-fuse, ama-reactors, amaswishi angaba ukuvikela nokulawula kwamanje.

I-Electrodynamic action circuit breaker ihlukaniswe yaba idivayisi yokudlulisa umoya kanye nedivayisi yokudlulisela igiya.

(4) Ngokohlobo lwe-arc yokucima umlilo, kunezinhlobo ezintathu: isistimu yokucima i-arc yokucisha umoya, isistimu yokucima i-arc yokucima umlilo kanye nesistimu ye-composite yegumbi le-inert ye-inert yokucima ugesi.

Amasistimu okucima i-arc angenayo angahlukaniswa abe izigaba ezimbili: ukuhlukaniswa komugqa omaphakathi kanye nokuhlukaniswa kochungechunge lomugqa omaphakathi.Eyangaphambili ingasetshenziswa kumasekethe angathathi hlangothi ngezinhloso ezehlukene, lena yokugcina ayikwazi ukusetshenziswa kuyo yonke imigqa engathathi hlangothi (njengezindawo zokuhlala nezakhiwo zamahhovisi), kanti lena yokugcina isetshenziswa kakhulu kuzo zonke izinhlobo zezintambo zikagesi (njengezakhiwo zezimboni nezindawo zokugcina impahla) ngaphandle kwezindawo zokuhlala.

Isistimu yokucima i-arc kagesi ingasetshenziswa kuzo zonke izifunda ezidinga ukuvikela umugqa wamandla engozini kagesi;ingasetshenziswa kuzo zonke izifunda ezidinga ukuvikela umugqa wamandla engozini kagesi ngaphandle komsebenzi wokuvikela noma ngaphandle komsebenzi wokuvikela ngaphansi kwezimo zokusebenza jikelele.Isistimu yokucima i-arc kagesi ingenza "isifunda esifushane" phakathi komthombo wamandla, umthwalo kanye nomugqa ongathathi hlangothi, onganqamula iphutha lamanje ngokushesha ukuze unciphise umthwalo oqhubekayo wokushisa.

(5) Ukuhlukaniswa ngomsebenzi: kukhona ama-unipolar nama-multipolar breakers;womabili amamodeli angasetshenziswa emigqeni yamandla noma amakhabhinethi okusabalalisa, abizwa ngokuthi ama-circuit breakers esigaba esisodwa kanye ne-multiphase (okungukuthi, ukuba nezigaba ezimbili noma ngaphezulu) kanye nama-circuit breaker ezigaba ezimbili (owaziwa nangokuthi ama-circuit breakers ezigaba ezintathu);ama-circuit breakers esigaba esisodwa kanye nesigaba sesibili anezingxenye zawo ezikhethekile zokulawula, njengalezi: ama-breaker circuit-limiting amanje-isigaba sesithathu, njll;ama-circuit breaker ezigaba ezimbili asetshenziswa kakhulu ezinhlelweni zokusabalalisa ze-10 kV noma ngaphansi, noma njengamaswishi okuvikela emakhabetheni okusabalalisa angu-10 kV noma ngaphansi.

(6) Ihlukaniswe ngokwemibandela yokusetshenziswa: kukhona amanje amancane namakhulu alinganiselwe;