UkuqondaAbaphuli beeSekethe zangoku eziseleyo: Icandelo Elibalulekileyo Lokhuseleko Lombane
Kwihlabathi lokhuseleko lombane, ii-residual current circuit breakers (ii-RCB) zidlala indima ebalulekileyo ekukhuseleni abantu kunye nempahla kwiingozi zeziphene zombane. Ezi zixhobo, ezidla ngokubizwa ngokuba zi-residual current devices (ii-RCD) okanye ii-residual current circuit breakers (ii-RCCB), zenzelwe ukubona ukungalingani kwamanje kunye nokuvula i-circuit xa kufunyenwe impazamo. Ukuqonda indlela ii-RCB ezisebenza ngayo kunye nesizathu sokuba zibalulekile kunokunceda abanini bezindlu kunye namashishini ukuqinisekisa indawo ekhuselekileyo yombane.
Yintoni i-residual current breaker?
I-residual current breaker sisixhobo sombane esijonga umbane kwisekethe. Sihlala sithelekisa umbane ohamba kwi-live wire kunye nombane obuya kwi-neutral wire. Kwiimeko eziqhelekileyo, le currents kufuneka ilingane. Nangona kunjalo, ukuba kwenzeka impazamo, njenge-short circuit okanye umntu ngempazamo echukumisa i-live wire, omnye walo mbane unokuvuza emhlabeni. Oku kungalingani kubangela ukuba i-residual current current breaker ivule isekethe, nto leyo ethintela ukutshayiswa kombane okanye umlilo.
Zisebenza njani ii-residual current breakers?
IiResidual current breakers zisebenza ngokomgaqo we-differential current. Kukho i-transformer ngaphakathi kwisixhobo esiva ukuba i-current ihamba ngeentambo ezishushu nezingathathi cala. Ukuba umahluko phakathi kwezi currents udlula umda omiselweyo (ngesiqhelo yi-30 mA ukuqinisekisa ukhuseleko lomntu), i-residual current breaker iyawa, inqumle umbane ngaphakathi kwee-milliseconds. Olu tshintsho lukhawulezayo lubalulekile ukuthintela ukwenzakala okukhulu okanye ukufa ngenxa yombane.
Iintlobo zee-residual current breakers
Kukho iintlobo ezahlukeneyo zee-residual current breakers, nganye inenjongo ethile:
1. Umbane oTshintshisayo: Olu hlobo lolweesekethe ezithwala umbane oTshintshisayo kuphela (AC). Lolona hlobo luqhelekileyo olusetyenziswa kwiindawo zokuhlala.
2. Uhlobo A: Le RCB ibona zombini iimpazamo ze-AC kunye ne-pulsating direct current (DC) kwaye ifanelekile kwiisekethe eziqulethe izixhobo ezinezixhobo ze-elektroniki, ezifana neekhompyutha kunye nee-solar inverters.
3. Uhlobo B: Ii-RCB zohlobo B zenzelwe iisekethe ezinokuthwala umsinga othe tye kwaye zihlala zisetyenziswa kwizicelo zoshishino, ingakumbi ezo zibandakanya imithombo yamandla avuselelekayo.
4. Uhlobo lwe-F: Olu hlobo ludibanisa iimpawu zohlobo lwe-A kunye nohlobo lwe-B, lukhusela kwi-AC kunye ne-DC residue currents, kwaye lufanelekile kwiintlobo ngeentlobo zezicelo.
Ukubaluleka kwee-residual current breakers
Ukubaluleka kwee-residual current breakers akunakugxininiswa kakhulu. Zibalulekile ekuphuculeni ukhuseleko lombane emakhayeni, kwiindawo zokusebenza nakwizakhiwo zikawonke-wonke. Ii-residual current breakers zikhusela ubomi ngokuthintela ukutshayiswa ngumbane, ingakumbi kwiindawo ezinamanzi, njengezindlu zangasese kunye neekhitshi. Zikwanceda ekuthinteleni imililo yombane ebangelwa ziintambo okanye izixhobo ezingasebenzi kakuhle.
Uvavanyo oluqhelekileyo kunye nokugcinwa kwe-RCB kubalulekile ukuqinisekisa ukuthembeka kwayo. Uninzi lweeyunithi zixhotyiswe ngeqhosha lokuvavanya ukuvumela umsebenzisi ukuba ajonge ukusebenza kwayo. Kucetyiswa ukuba i-RCB ivavanywe ubuncinane kanye ngenyanga ukuqinisekisa ukuba isebenza kakuhle.
Isishwankathelo
Ukuqukumbela, ii-residual current breakers ziyinxalenye ebalulekileyo yeenkqubo zombane zanamhlanje, zibonelela ngokhuseleko olubalulekileyo kwiingozi zombane. Ngokuqonda indlela ezisebenza ngayo ii-residual current breakers kunye neentlobo zazo ezahlukeneyo, abantu kunye namashishini banokwenza izigqibo ezinolwazi malunga namanyathelo abo okhuseleko lombane. Ukutyala imali kwii-residual current circuit breakers akugcini nje ngokukhusela ubomi, kodwa kukwakhusela nepropathi, kuzenza zibe yinxalenye ebalulekileyo yayo nayiphi na indawo yokufakelwa kombane.
Ixesha leposi: Disemba-13-2024