Uyini umgomo wokusebenza we-circuit breaker?

Umgomo wokusebenza we-aI-I-circuit breakerizungeza kumqondo ophusile wokuqapha, ukwahlulela, nokwenza. Ngomshini wayo owakhelwe ngaphakathi wokukhubeka kanye nesistimu yokucima i-arc, ifinyelela ukuxhumeka kwesekethe evamile nokulawula ukunqanyulwa kanye nokuphazamiseka okusheshayo kwamasekhethi anephutha. Ngokucacile, ingahlukaniswa ngemodi evamile yokusebenza kanye nemodi yokuvikela amaphutha. Isistimu yokucisha i-arc iyindlela ewusizo ebalulekile eqinisekisa ukuhamba okuthembekile.

Uma isekethe iba namaphutha anjengokulayisha ngokweqile, ukujikeleza okufushane, noma ukuncipha kwamandla kagesi, iyunithi yohambo eyakhelwe ngaphakathi icupha indlela yokukhiya ukuze ivuleke, ifinyelele ukukhubeka okuzenzakalelayo. Amaphutha ahlukene ahambisana nemigomo ehlukene yokukhubeka:

I-Overload Protection (I-Thermal Tripping Principle)

Ingxenye Eyinhloko: I-Bimetallic strip (eyenziwe ngamashidi amabili ensimbi anama-coefficients ahluke kakhulu okwandisa okushisayo acindezelwe ndawonye).

I-Working Logic: Uma isekethe ilayishwe kakhulu, okwamanje kudlula inani elilinganiselwe ngokuqhubekayo, okubangela ukuthi umugqa we-bimetallic ugobe futhi ugxumeke ngenxa yokushisa. Lapho i-deformation ifinyelela embundwini, iphusha indlela yokukhiya ukuze uvule, futhi othintana naye ohambayo uphula isifunda ngaphansi kwesenzo sentwasahlobo.

Izici: Isenzo esibambezelekile; ukulayisha ngokweqile kwesikhathi esifushane (njengokuqala kwenjini) ngeke kubangele ukukhubeka, kugweme ukukhubeka okungamanga.

Ukuvikelwa Komjikelezo Omfushane (Isimiso Sokuhamba Kagesi)

Ingxenye Eyinhloko: Ikhoyili kagesi (inxeba elizungeze umnyombo wensimbi).

I-Operating Logic: Uma isifunda esifushane senzeka, isivinini samanje sikhuphuka ngokushesha siye emashumini noma ngisho namakhulu ezikhathi zenani elilinganiselwe. Ikhoyili kazibuthe kagesi ikhiqiza amandla kagesi aqinile, eheha umongo wensimbi ukuthi ushaye indlela yokukhiya, ivule ngokushesha isekethe.

Izici: Isenzo esisheshayo sezinga le-Milisecond, esikwazi ukunqamula isekethe ngesikhathi esifushane kakhulu, ukuvimbela ukushiswa kwe-arc kumishini noma ukubangela imililo.

I-Undervoltage/Loss-of-Voltage Protection (Undervoltage Tripping Principle)

Ingxenye Eyinhloko: Ikhoyili yohambo ye-Undervoltage, exhunywe ngokuhambisana kusekethe ukuze ihlole amandla kagesi.

Umqondo Wokusebenza: Lapho i-voltage yehla ngaphansi cishe kuka-70% yenani elilinganiselwe noma ilahleka ngokuphelele, amandla kazibuthe wekhoyili yohambo ayanyamalala, futhi umongo wensimbi, ngaphansi kokusebenza kwentwasahlobo, ucupha indlela yokukhiya ukuze uvule, inqamule isekethe.

Umsebenzi: Ivimbela okokusebenza ekusebenzeni okungavamile kanye nokulimala ngaphansi kwamandla kagesi aphansi, futhi igwema ubungozi bokuphepha obubangelwa ukuqaliswa komshini kungazelelwe lapho amandla ebuyiselwa.

Ukuvikelwa Kokuvuza (Isimiso Sokuvikela Samanje Esiyinsalela)

Ingxenye Eyinhloko: Isiguquli samanje sokulandelana kweZero.

I-Operating Logic: Ngaphansi kwezimo ezijwayelekile, amaza asesigabeni kanye nemigqa engathathi hlangothi ayalingana ngobukhulu futhi aphambene ngendlela. I-flux kazibuthe kumongo we-transformer ikhansela ngaphandle, okuholela ekutheni kungabikho okukhiphayo kwamanje. Uma ukuvuza kwenzeka (okufana nokushaqeka kukagesi), enye intambo ilahleka emhlabathini, okubangela ukungalingani emisinga yezigaba ezimbili. I-transformer ikhiqiza isignali ekhangisiwe, icupha iyunithi yohambo.

Izici: I-threshold yokusebenza ephansi (imvamisa engu-30mA), ebeka phambili ukuphepha komuntu siqu.