Ngaba uyazi ukuba zithini ii-Circuit Breakers?

Zithini iiCircuit Breakers?

Iswitshi yombane eyenzelwe ukukhusela isekethe yombane ekonakalisweni okubangelwa yi-current/overload okanye i-short circuit yaziwa ngokuba yi-circuit breaker. Umsebenzi wayo ophambili kukuphazamisa i-current ow emva kokuba ii-relay zokukhusela ziqaphele ingxaki.

Umsebenzi weSwitch yeSekethe yokuPhula iiSekethe.

I-circuit breaker isebenza ngokuba sisixhobo sokhuseleko ngaloo ndlela ithintela ukonakala kweemoto kunye neentambo xa umbane ohamba kwisekethe yombane udlula umda woyilo lwayo. Oku ikwenza ngokususa umbane kwisekethe xa kuvela imeko engakhuselekanga.

Zisebenza njani iiDC Circuit Breakers?

Njengoko igama labo lisitsho, ii-Direct Current (DC) circuit breakers zikhusela izixhobo zombane ezisebenza kwi-direct current. Umahluko obalulekileyo phakathi kwe-direct current kunye ne-alternating current kukuba i-voltage output kwi-DC ayiguquki. Ngokwahlukileyo koko, i-voltage output kwi-Alternating Current (AC) ijikeleza izihlandlo ezininzi ngomzuzwana ngamnye.

Yintoni Umsebenzi we-DC Circuit Breaker?

Imigaqo efanayo yokukhusela ubushushu kunye nemagnethi iyasebenza kwi-DC breakers njengoko injalo kwi-AC circuit breakers:
Ukhuseleko lobushushu luyayiphazamisa i-DC circuit breaker xa umbane udlula ixabiso elilinganisiweyo. Ubushushu boqhagamshelwano lwe-Bimetallic buyanda kwaye buyayiphazamisa i-circuit breaker kule ndlela yokukhusela. Ukhuseleko lobushushu lusebenza ngokukhawuleza kuba umbane uvelisa ubushushu obuninzi ukuze wande kwaye uvule uqhagamshelo lombane njengoko umbane umkhulu. Ukhuseleko lobushushu lwe-DC circuit breaker lukhusela umbane ogqithisileyo ongaphezulu kancinci kunombane oqhelekileyo osebenzayo.
Xa kukho imisinga enamandla yempazamo, ukhuseleko lwemagnethi luyayiphazamisa i-DC circuit breaker, kwaye impendulo ihlala ikhawuleza. Njenge-AC circuit breakers, i-DC circuit breakers zinamandla okuqhekeza alinganiselweyo amele eyona misinga yempazamo ibalulekileyo enokuphazamiseka.
Inyani yokuba umbane umi rhoqo kwii-DC circuit breakers ithetha ukuba i-circuit breaker kufuneka ivule unxibelelwano lombane kude ukuze iphazamise umbane we-fault current. Ukhuseleko lwemagnethi lwe-DC circuit breaker lukhusela ii-short circuit breaker kwiingxaki ezinkulu kakhulu kunokugqithisa.

Iintlobo ezintathu zeMiniature Circuit Breaker:

Uhlobo B (uhambo oluphindwe kathathu ukuya kahlanu lwangoku olulinganisiweyo).
Uhlobo C (uhambo oluphindwe ka-5-10 lwangoku olulinganisiweyo).
Uhlobo D (uhambo oluphindwe ka-10-20 lwangoku olulinganisiweyo).