Iyini i-RCBO futhi isebenza kanjani?

I-RCBOisifinyezo se-"overcurrent residual current circuit breaker" futhi iyisisetshenziswa esibalulekile sokuphepha sikagesi esihlanganisa imisebenzi ye-MCB (i-miniature circuit breaker) kanye ne-RCD (idivayisi esele yamanje). Ihlinzeka ngokuvikeleka ezinhlotsheni ezimbili zamaphutha kagesi: i-overcurrent kanye ne-residual current (ebizwa nangokuthi ukuvuza kwamanje).

Ukuze uqonde ukuthi kanjaniI-RCBOisebenza, ake siqale sibuyekeze ngokushesha lezi zinhlobo ezimbili zokwehluleka.

I-Overcurrent yenzeka lapho kugeleza umthamo wamanje omningi kumjikelezo, okungabangela ukushisa ngokweqile futhi mhlawumbe nomlilo. Lokhu kungenzeka ngenxa yezizathu ezihlukahlukene, njengesifunda esifushane, ukulayishwa kwesekhethi, noma iphutha likagesi. Ama-MCB adizayinelwe ukuthola nokuphazamisa lawa maphutha adlulele ngokukhubeka isekethe ngokushesha lapho i-current yeqa umkhawulo onqunywe kusengaphambili.

Ngakolunye uhlangothi, ugesi oyinsalela noma ukuvuza kwenzeka lapho isekethe iphazamiseka ngephutha ngenxa yezintambo ezingezinhle noma ingozi ye-DIY. Isibonelo, ungabhoboza intambo ngephutha ngenkathi ufaka ihuku lesithombe noma usike ngomshini wokusika utshani. Kulokhu, amandla kagesi angase avuze endaweni ezungezile, okungase kubangele ukushaqeka kukagesi noma umlilo. Ama-RCD, abuye aziwe ngokuthi ama-GFCIs (Iziphazamisi Zomjikelezo Osezansi) kwamanye amazwe, aklanyelwe ukuthola ngokushesha ukuvuza kwamanje kwamaminithi futhi agibele isekethe ngama-millisecond ukuvimbela noma yikuphi ukulimala.

Manje, ake sibhekisise ukuthi i-RCBO iwahlanganisa kanjani amandla e-MCB ne-RCD. I-RCBO, njenge-MCB, ifakwe ebhodini lokushintshwa noma kuyunithi yabathengi. Inemojula ye-RCD eyakhelwe ngaphakathi eqapha ngokuqhubekayo ukugeleza kwamanje kumjikelezo.

Uma kwenzeka iphutha elidlulele, ingxenye ye-MCB ye-RCBO ithola amandla amanje amaningi bese igingqa isekethe, ngaleyo ndlela iphazamise ukunikezwa kwamandla futhi ivimbele noma iyiphi ingozi ehlobene nokugcwala kakhulu noma ukujikeleza okufushane. Ngesikhathi esifanayo, imojula ye-RCD eyakhelwe ngaphakathi iqapha ibhalansi yamanje phakathi kwezintambo ezibukhoma nezingathathi hlangothi.

Uma kutholwa noma yimaphi amandla asalayo (okukhombisa iphutha lokuvuza), into ye-RCBO ye-RCBO ngokushesha ikhubaza isekethe, ngaleyo ndlela inqamule ukunikezwa kwamandla. Le mpendulo esheshayo iqinisekisa ukuthi ukushaqeka kukagesi kuyagwenywa futhi imililo engase ibe khona iyavinjelwa, kunciphisa ingozi yamaphutha ezintambo noma ukulimala kwekhebula ngephutha.

Kubalulekile ukuqaphela ukuthi i-RCBO inikeza ukuvikelwa kwesekethe ngayinye, okusho ukuthi ivikela amasekhethi athile esakhiweni azimele, njengamasekhethi okukhanyisa noma izitolo. Lokhu kuvikelwa kwe-modular kunika amandla ukutholwa kwamaphutha okuqondisiwe kanye nokuhlukaniswa, kunciphisa umthelela kwamanye amasekhethi lapho kwenzeka iphutha.

Ukufingqa, i-RCBO (i-overcurrent residual current circuit breaker) iyisisetshenziswa esibalulekile sokuphepha sikagesi esihlanganisa imisebenzi ye-MCB ne-RCD. Inephutha elidlulele kanye nemisebenzi yokuvikela yamanje eyinsalela ukuze kuqinisekiswe ukuphepha komuntu siqu nokuvikela izingozi zomlilo. Ama-RCBO adlala indima ebalulekile ekugcineni ukuphepha kukagesi ezindlini, izakhiwo zezentengiselwano nezimo zezimboni ngokukhubeka ngokushesha amasekhethi uma kutholwa noma yiliphi iphutha.