Yintoni i-Earth Leakage Circuit Breaker (ELCB) kunye nokusebenza kwayo

Izaphuli zesekethe ezivuzayo zakwangoko zizixhobo zokubona amandla ombane, ezithi ngoku zitshintshwe zizixhobo zangoku zokuva (RCD/RCCB). Ngokubanzi, izixhobo zangoku zokuziva zibizwa ngokuba yi-RCCB, kunye nezixhobo zokubona amandla ombane ezibizwa ngokuba yi-Earth Leakage Circuit Breaker (ELCB). Kwiminyaka engamashumi amane edlulileyo, ii-ECLBs zokuqala zangoku zaziswa kwaye malunga neminyaka engamashumi amathandathu edlulileyo i-voltage yokuqala ye-ECLB yaziswa. Kangangeminyaka eliqela, zombini amandla ombane kunye nee-ELCB ezisebenzayo ngoku zombini zazibizwa ngokuba zii-ELCBs ngenxa yegama labo elilula ukulikhumbula. Kodwa usetyenziso lwezi zixhobo zibini lunike ukukhula kumxube obalulekileyo kushishino lombane.

Yintoni i-Earth Leakage Circuit Breaker (ELCB)?

I-ECLB yolunye uhlobo lwesixhobo sokhuseleko esisetyenziselwa ukufakela isixhobo sombane esine-impedance ephezulu yomhlaba ukuphepha ukothuka. Ezi zixhobo zichonga ii-voltages ezincinci zesixhobo sombane kwiintsimbi ezivaliweyo kwaye zingenelele kwisekethe ukuba ichongiwe umbane onobungozi. Eyona njongo ye-Earth leakage circuit breaker (ECLB) kukumisa umonakalo ebantwini nakwizilwanyana ngenxa yokothuka kombane.

I-ELCB luhlobo oluthile lwe-latching relay olunamandla ombane angenayo wesakhiwo ahambelana nokutshintsha oonxibelelwano ukuze i-breaker circuit ikhuphe amandla kwimeko engakhuselekanga. I-ELCB iqaphela impazamo yomoya womntu okanye isilwanyana kucingo lomhlaba kuqhagamshelwano olulugadayo. Ukuba i-voltage eyaneleyo ibonakala ingaphaya kwekhoyili yengqondo ye-ELCB, iya kuwacima amandla, kwaye ihlale ivaliwe de iphinde ihlengahlengiswe. I-ELCB ye-voltage evavanya amandla ombane ayiboni iimpazamo zamanzi ukusuka emntwini okanye kwisilwanyana ukuya emhlabeni.

I-ELCB iqaphela impazamo yomoya womntu okanye isilwanyana kucingo lomhlaba kuqhagamshelwano olulugadayo. Ukuba i-voltage eyaneleyo ibonakala ingaphaya kwekhoyili yengqondo ye-ELCB, iya kuwacima amandla, kwaye ihlale ivaliwe de iphinde ihlengahlengiswe. I-ELCB ye-voltage evavanya amandla ombane ayiboni iimpazamo zamanzi ukusuka emntwini okanye kwisilwanyana ukuya emhlabeni.

I-ELCB iqaphela impazamo yomoya womntu okanye isilwanyana kucingo lomhlaba kuqhagamshelwano olulugadayo. Ukuba i-voltage eyaneleyo ibonakala ingaphaya kwekhoyili yengqondo ye-ELCB, iya kuwacima amandla, kwaye ihlale ivaliwe de iphinde ihlengahlengiswe. I-ELCB ye-voltage evavanya amandla ombane ayiboni iimpazamo zamanzi ukusuka emntwini okanye kwisilwanyana ukuya emhlabeni.

Umsebenzi weELCB

Umsebenzi ophambili we-Earth-leakage circuit breaker okanye i-ELCB kukuthintela ukothuka ngelixa ukufakelwa kombane ngokusebenzisa i-Earth impedance ephezulu kuba sisixhobo sokhuseleko. Esi saphuli sesekethe sichonga ii-voltages ezincinci ezilahlekileyo ngaphezulu kwesixhobo sombane kunye nesivalo sesinyithi kwaye siphazamise isekethe ukuba ichongiwe amandla ombane ayingozi. Eyona njongo yee-ELCBs kukuphepha ukwenzakala ebantwini nakwizilwanyana ngenxa yokothuka kombane.

Ukusebenza kwe-ELCB
I-breaker circuit yombane luhlobo oluthile lwe-latching relay kwaye inobonelelo oluphambili lwezakhiwo eziqhagamshelwe kulo lonke uqhagamshelwano lwaso lokutshintsha ukuze esi saphuli sesekethe siqhawule umbane xa ukuvuza komhlaba kuchongiwe. Ngokusebenzisa oku, i-fault current ingabonwa ukusuka kubomi ukuya kucingo oluphantsi kwindawo yokukhusela. Ukuba i-voltage eyaneleyo iphuma ngapha kwe-coil yengqondo ye-breaker yesekethe, iya kuvala amandla kwaye ihlale ivaliwe de kusekwe kwakhona ngokwasemzimbeni. I-ELCB esetyenziselwa i-voltage-sensor ayiboni iimpazamo zamanzi.

Indlela YokuQhagamshela uMphangi weSekethe wokuvuza

Isiphaluka somhlaba sihlengahlengiswa xa kusetyenziswa i-ELCB; uqhagamshelo kwintonga yomhlaba yamkelwe ngesaphuli sesekethe sokuvuza ngokudibanisa neetheminali zayo ezimbini zomhlaba. Omnye uya kumqhubi okhuselayo wesiphaluka esifanelekileyo (CPC), kunye nomnye kwintonga yomhlaba okanye olunye uhlobo lokudibanisa komhlaba. Ngaloo ndlela isekethe yomhlaba ivumela nge-coil yengqiqo ye-ELCB.

Izinto ezilungileyo zeVoltage Operated ELCB

Ii-ELCBs azikhathali kangako kwiimeko zeempazamo kwaye zineehambo ezimbalwa eziyinkathazo.
Ngelixa langoku kunye ne-voltage kumgca osezantsi ngokuqhelekileyo iphosakele ngokusuka kwintambo ephilayo, oku akunjalo ngokuqhubekayo, ngoko ke kukho iimeko apho i-ELCB inohambo olucaphukisayo.
Xa ufakelo lwesixhobo sombane lunabafowunelwa ababini emhlabeni, uhlaselo lombane olusondeleyo oluphezulu lwangoku luya kuncothula i-voltage gradient emhlabeni, inike i-ELCB i-coil yenzwano yombane eyaneleyo ukuyisusa kuhambo.
Ukuba ngaba nayiphi na iingcingo zomhlaba zikhutshiwe kwi-ELCB, ayisayi kuphinda ihlonyelwe ayisayi kuphinda ifakwe ngokuchanekileyo.
Ezi ELCBs ziyimfuneko yoqhagamshelo lwesibini kunye nethuba lokuba naluphi na uqhagamshelo olongezelelweyo emhlabeni kwinkqubo esongelwayo lunokwenza ukuba umtshina ungasebenzi.