Isingeniso: Okubalulekile Kokuphepha Kagesi
Ugesi, impilo engabonakali yomphakathi wanamuhla, unika amandla amakhaya ethu, izimboni, kanye nokuqanjwa okusha. Nokho, la mandla abalulekile anezingozi ezingokwemvelo, ngokuyinhloko ingozi yokushaqeka kukagesi nomlilo obangelwa amaphutha. Amadivayisi Amanje Ayinsalela (ama-RCD) ame njengabalindi ababucayi ngokumelene nalezi zingozi, anqamula ngokushesha ukunikezwa kwamandla lapho ethola ukuvuza kwamaza ayingozi agelezela emhlabeni. Nakuba ama-RCD angaguquki ahlanganiswe kumayunithi omthengi ahlinzeka ngokuvikeleka okubalulekile kwawo wonke amasekhethi, I-Socket-Outlet Residual Current Devices (SRCDs) ihlinzeka ngendawo yokuphepha eyingqayizivele, eguquguqukayo, futhi eqondiswe kakhulu. Le ndatshana ihlolisisa umhlaba wama-SRCDs, ihlola ukusebenza kwawo kobuchwepheshe, izinhlelo zokusebenza ezihlukahlukene, izici ezibalulekile zokusebenza, kanye nezinzuzo eziphoqelelayo zomkhiqizo eziwenza abe amathuluzi abalulekile okuthuthukisa ukuphepha kukagesi ezindaweni eziningi.

1. Ukunciphisa i-SRCD: Incazelo kanye Nomqondo Oyinhloko
I-SRCD wuhlobo oluthile lwe-RCD oluhlanganiswe ngqo ku-socket-outlet (isitsha sokwamukela). Ihlanganisa ukusebenza kwesokhethi kagesi okujwayelekile nesivikelo esisindisa impilo se-RCD ngaphakathi kweyunithi ye-plug-in eyodwa, eziqukethwe ngokwayo. Ngokungafani nama-RCD angaguquki avikela wonke amasekhethi ezansi nomfula kusukela kuyunithi yabathengi, i-SRCD inikeza ukuvikeleka kwendawokuphelaokokusebenza okuxhunywe kuyo ngqo. Kucabange njengonogada womuntu siqu owabelwe leyo sokhethi eyodwa.

Umgomo oyisisekelo ngemuva kwawo wonke ama-RCD, okuhlanganisa nama-SRCDs, uMthetho Wamanje we-Kirchhoff: owamanje ogeleza kuyisekethe kufanele ulingane nowamanje ophumayo. Ngaphansi kwezimo ezijwayelekile zokusebenza, i-current in the live conductor (isigaba) kanye ne-neutral conductor iyalingana futhi iphambene. Kodwa-ke, uma kwenzeka iphutha - njengokuvala ikhebula elimele, umuntu othinta ingxenye ephilayo, noma ukungena komswakama - okunye kwamanje kungathola indlela engahlosiwe eya emhlabeni. Lokhu kungalingani kubizwa ngokuthi i-residual current noma i-earth leakage current.

2. Indlela Ama-SRCDs Asebenza Ngayo: Indlela Yokuzwa Nekuhamba
Ingxenye ewumgogodla evumela ukusebenza kwe-SRCD i-transformer yamanje (CT), ngokuvamile ingqikithi ye-toroidal (emise okwendandatho) ezungeze kokubili amakhondatha aphilayo naphakathi nendawo ahlinzeka nge-socket-outlet.

1. Ukuqapha Okuqhubekayo: I-CT ihlale iqapha isamba sevekhtha yamaza agelezayo kumakhondakta aphilayo naphakathi nendawo. Ngaphansi kwezimo ezivamile, ezingenaphutha, lawa misinga ayalingana futhi aphambene, okuholela ekuguquguqukeni kukazibuthe kwenetha kaziro ngaphakathi kwengqikithi ye-CT.
2. Ukutholwa Kwamanje Okuyinsalela: Uma iphutha libangela ukuthi i-current ivuze emhlabeni (isb, ngomuntu noma into esetshenziswayo enephutha), ukubuyisela kwamanje nge-conductor emaphakathi kuzoba ngaphansi kokufakwa kwamanje nge-conductor ebukhoma. Lokhu kungalingani kudala ukugeleza kazibuthe ku-CT core.
3. I-Signal Generation: Ukushintshashintsha kukazibuthe kubangela i-voltage kumajika esibili asongwe umgogodla we-CT. Le voltheji engenisiwe ilingana nobukhulu bamanje oyinsalela.
4. Ukucutshungulwa Kwe-elekthronikhi: Isiginali efakiwe ifakwa kumjikelezo we-elekthronikhi obucayi ngaphakathi kwe-SRCD.
5. Isinqumo Sohambo Nokwenza Kusebenze: Izinto zikagesi ziqhathanisa ileveli yamanje eyinsalela etholakele ngokuqhathaniswa nomkhawulo wokuzwela osethwe ngaphambilini we-SRCD (isb, 10mA, 30mA, 300mA). Uma i-residual current idlula lo mkhawulo, i-circuitry ithumela isignali ku-electromagnetic relay esebenza ngokushesha noma iswishi yesimo esiqinile.
6. Ukunqanyulwa kwamandla: I-relay/swishi ivula khona manjalo abathintwayo banikeze kokubili izikhondatha ezibukhoma nezingathathi hlangothi endaweni ye-socket-outlet, inqamule amandla phakathi kwama-millisecond (ngokuvamile angaphansi kwama-40ms kumadivayisi angu-30mA ngokukalwa kwensalela yamanje). Lokhu kunqanyulwa okusheshayo kuvimbela ukushaqeka kukagesi okungaba yingozi noma kumise umlilo okhulayo obangelwa ukuvuza okungapheli okuzungeza izinto ezivuthayo.
7. Setha kabusha: Uma iphutha selisuliwe, i-SRCD ingakwazi ukusethwa kabusha kusetshenziswa inkinobho ku-faceplate yayo, ibuyisela amandla kusokhethi.

3. Izici Ezisemqoka Ezisebenzayo zama-SRCD esimanje
Ama-SRCD esimanje ahlanganisa izici ezimbalwa eziyinkimbinkimbi ngale kokutholwa okuyisisekelo okuyinsalela yamanje:

• Ukuzwela (IΔn): Leli izinga elilinganiselwe lensalela yokusebenza, izinga lapho i-SRCD yakhelwe ukuhamba khona. Ukuzwela okujwayelekile kufaka:
  • Ukuzwela Okuphezulu (≤ 30mA): Ikakhulukazi ukuze kuvikelwe ngokumelene nokushaqeka kukagesi. I-30mA iyindinganiso yokuvikelwa komuntu siqu okujwayelekile. Izinguqulo ze-10mA zinikeza ukuvikeleka okuthuthukisiwe, okuvame ukusetshenziswa ezindaweni zezokwelapha noma ezindaweni ezinobungozi obukhulu.
  • Ukuzwela Okumaphakathi (isb., 100mA, 300mA): Ngokuyinhloko ukuze kuvikelwe ezingozini zomlilo ezibangelwa amaphutha aqhubekayo avuzayo, ngokuvamile asetshenziswa lapho ukuvuza kwangemuva okuphezulu kungase kulindelwe (isb, eminye imishini yezimboni, ukufakwa okudala). Inganikeza isivikelo sokushaqeka esiyisipele.
• Uhlobo Lokutholwa Kwephutha Kwamanje: Ama-SRCD aklanyelwe ukuphendula ezinhlotsheni ezihlukene zamaza asele:
  • Uhlobo AC: Ithola ama-residual currents ashintshanayo kuphela. Okuvame kakhulu futhi ukonga, kulungele imithwalo evamile yokumelana, i-capacitive, ne-inductive ngaphandle kwezingxenye ze-elekthronikhi.
  • Uhlobo A: Ithola womabili ama-residual currents e-ACfuthiamaza asele e-DC aphehlayo (isb., ezinsizeni ezinokulungiswa kwamagagasi uhhafu njengamanye amathuluzi kagesi, izibani ezikhanyayo, imishini yokuwasha). Ibalulekile ezindaweni zesimanje ezinamadivaysi kagesi. Iya ngokuya iba yindinganiso.
  • Uhlobo F: Iklanyelwe ngokukhethekile amasekhethi anikezela ngesivinini esishintshashintshayo sesigaba esisodwa (ama-inverter) atholakala ezintweni zikagesi ezifana nemishini yokuwasha, ama-air conditioner, namathuluzi kagesi. Inikeza ukuvikeleka okuthuthukisiwe ekukhubekeni enkathazo okubangelwa ukuvuza kwamaza aphezulu okudalwa yilawa madrayivu.
  • Uhlobo B: Ithola i-AC, i-pulsating DC,futhiama-currents asele e-DC abushelelezi (isb, asuka kuma-inverter e-PV, amashaja e-EV, amasistimu amakhulu e-UPS). Ngokuyinhloko isetshenziswa ezimbonini noma izicelo zezentengiselwano ezikhethekile.
• Isikhathi Sokuhamba: Isikhathi esiphezulu phakathi kwensalela yamanje eyedlula i-IΔn kanye nokunqanyulwa kwamandla. Ilawulwa ngamazinga (isb, IEC 62640). Ku-30mA SRCDs, lokhu kuvamise ukuthi ≤ 40ms ku-IΔn kanye no-≤ 300ms kokuthi 5xIΔn (150mA).
• Ikalwe Okwamanje (Ngaphakathi): Ubuningi bamanje obuqhubekayo isokhethi le-SRCD linganikezela ngokuphephile (isb, 13A, 16A).
• Ukuvikela Okwedlulele (Ongakukhetha kodwa Okuvamile): Ama-SRCD amaningi ahlanganisa ukuvikelwa okudlulele okubalulekile, ngokuvamile i-fuse (isb, i-13A BS 1362 fuse kumapulagi ase-UK) noma ngezinye izikhathi i-circuit breaker encane (MCB), evikela isokhethi nezinto zikagesi ezixhunyiwe ekulayishweni okugcwele kanye namaza omjikelezo omfushane.Okubaluleke kakhulu, le fuse ivikela isekethe ye-SRCD ngokwayo; i-SRCD ayishintshi isidingo sama-MCB akhuphuka nomfula kuyunithi yabathengi.
• Amashutha Amelana Ne-Tamper-Resistant (TRS): Kuyisibopho ezifundeni eziningi, lawa mashutha alayishwe entwasahlobo avimba ukufinyelela koxhumana nabo bukhoma ngaphandle uma womabili amaphinikhodi epulaki efakwe ngesikhathi esisodwa, enciphisa kakhulu ingozi yokushaqeka kukagesi, ikakhulukazi ezinganeni.
• Inkinobho Yokuhlola: Isici esiyisibopho esivumela abasebenzisi ukuthi ngezikhathi ezithile balingise iphutha lamanje eliyinsalela futhi baqinisekise ukuthi indlela yokukhubeka iyasebenza. Kufanele icindezelwe njalo (isb, nyanga zonke).
• Inkomba Yohambo: Izinkomba ezibonakalayo (ngokuvamile ziyinkinobho enemibala noma ifulegi) zibonisa ukuthi i-SRCD isesimweni sokuthi “VULIWE” (amandla atholakalayo), “CISHIWE” (kucinywe mathupha), noma “Kususiwe” (kutholwe iphutha).
• Ukuqina Komshini Nokagesi: Idizayinelwe ukumelana nenani elishiwo lokusebenza kwemishini (ukufakwa/ukususwa kwamapulaki) kanye nokusebenza kukagesi (imijikelezo ekhubekayo) ngokwezindinganiso (isb, i-IEC 62640 idinga ≥ 10,000 ukusebenza kwemishini).
• Ukuvikelwa Kwemvelo (Izilinganiso Ze-IP): Kutholakala ezilinganisweni ezihlukene ze-IP (I-Ingress Protection) ezindaweni ezihlukene (isb, i-IP44 yokumelana nokuchaphazeka emakhishini/ezindlini zokugeza, i-IP66/67 yokusetshenziswa ngaphandle/kwezimboni).

4. Izicelo Ezihlukahlukene zama-SRCDs: Ukuvikelwa Okuhlosiwe Lapho Kudingeka
Imvelo eyingqayizivele ye-plug-and-play yama-SRCDs iwenza aguquguquke ngendlela emangalisayo ekuthuthukiseni ukuphepha kuzimo eziningi:

• Izilungiselelo zendawo yokuhlala:
  • Izindawo Ezinobungozi Obukhulu: Ukuhlinzeka ngokuvikela okungeziwe okubalulekile ezindlini zokugezela, emakhishini, emagaraji, ezindaweni zokusebenzela, nasezindlini zangaphandle (izivande, amavulandi) lapho ingozi yokushaqeka kukagesi iyanda ngenxa yokuba khona kwamanzi, amaphansi okuqhuba, noma ukusetshenziswa kwempahla ephathekayo. Ibalulekile uma iyunithi enkulu yabathengi i-RCD ingekho, inephutha, noma ihlinzeka ngokuvikela okuyisipele kuphela (Uhlobo lwe-S).
  • Ukufaka kabusha Ukufakwa Kwezinto Ezindala: Ukuthuthukisa ukuphepha ezindlini ezingenakho ukuvikeleka kwe-RCD noma lapho kukhona ukumbozwa kancane kuphela, ngaphandle kwezindleko nokuphazamiseka kokuhlanganisa kabusha izintambo noma ukushintshwa kweyunithi yomthengi.
  • Specific Appliance Protection: Ukuvikela izinto ezisetshenziswayo ezinobungozi obukhulu noma ezibalulekile njengamathuluzi kagesi, izinto zokugunda utshani, imishini yokuwasha, izifudumezi eziphathwayo, noma amaphampu e-aquarium ngqo endaweni yokusetshenziswa.
  • Izidingo Zesikhashana: Ukuhlinzeka ngokuphepha kwemishini esetshenziswa ngesikhathi sokulungiswa noma amaphrojekthi e-DIY.
  • Ukuphepha Kwezingane: Izivalo ze-TRS ezihlanganiswe nokuvikela kwe-RCD zinikeza izithuthukisi zokuphepha ezibalulekile ezindlini ezinezingane ezincane.
• Izindawo Zokuhweba:
  • Amahhovisi: Ukuvikela impahla ye-IT ebucayi, izifudumezi eziphathwayo, amaketela, nezinto zokuhlanza, ikakhulukazi ezindaweni ezingamboziwe ama-RCD angaguquki noma lapho ukukhubeka kwe-RCD eyinhloko kuzophazamisa kakhulu.
  • Ukuthengisa Nokungenisa Izihambi: Ukuqinisekisa ukuphepha kwempahla yokubonisa, izinto zokupheka eziphathwayo (izifudumezi zokudla), okokuhlanza, kanye nezibani/izinto zokusebenza zangaphandle.
  • Ukunakekelwa Kwezempilo (Okungabalulekile): Ukunikeza ukuvikeleka emitholampilo, ukuhlinzwa kwamazinyo (izindawo okungezona eze-IT), amagumbi okulinda, nezindawo zokuqondisa zemishini evamile. (Qaphela: Amasistimu e-IT yezokwelapha kumatiyetha asebenzayo adinga ama-isolation transformer akhethekile, hhayi ama-RCD/SRCD ajwayelekile).
  • Izikhungo zemfundo: Ibalulekile emakilasini, ezindaweni zokucwaninga (ikakhulukazi kumishini ephathekayo), ama-workshops, nama-IT suites ukuze kuvikelwe abafundi nabasebenzi. I-TRS ibalulekile lapha.
  • Izinsiza Zokungcebeleka: Ukuvikela okokusebenza ezindaweni zokujima, ezindaweni zamachibi okubhukuda (ngokufanelekile okukalwe nge-IP), namagumbi okushintshela.
• Izingosi Zezimboni Nokwakha:
  • Ukwakha nokubhidliza: Okubaluleke kakhulu. Inika amandla amathuluzi aphathekayo, imibhoshongo yokukhanyisa, amajeneretha, namahhovisi ezindawo ezindaweni ezinokhahlo, ezimanzi, nezishintsha njalo lapho ukulimala kwekhebula kuvame khona. Ama-SRCD aphathekayo noma lawo ahlanganiswe kumabhodi okusabalalisa ayizimpilo.
  • Amaworkshop & Maintenance: Ukuvikela amathuluzi aphathekayo, okokusebenza kokuhlola, nemishini ezindaweni zokulungisa ifekthri noma izindawo zokusebenzela ezincane.
  • Ukufakwa Kwesikhashana: Imicimbi, imibukiso, amasethi amafilimu - noma yikuphi amandla esikhashana adingeka ezindaweni ezingaba yingozi.
  • Ukuvikela Ukwenza Ikhophi Yasenqolobaneni: Ukunikeza isendlalelo esengeziwe sokuphepha ezansi nomfula kusuka kuma-RCD angashintshi, ikakhulukazi okokusebenza okuphathekayo okubalulekile.
• Izicelo Ezikhethekile:
  • I-Marine & Caravans: Ibalulekile ekuvikelekeni ezikebheni, ezikebheni, nakumakharavani/ama-RV lapho amasistimu kagesi esebenza eduze namanzi kanye nama-conductive hulls/chassis.
  • Izikhungo Zedatha (Izisetshenziswa Zomngcele): Iziqapheli ezivikelayo, izisetshenziswa ezisizayo, noma okokusebenza kwesikhashana okuxhunywe eduze kwamaracks eseva.
  • Ukufaka Amandla Avuselelekayo (Okuphathekayo): Ukuvikela izinto eziphathwayo ezisetshenziswa ngesikhathi sokufakwa noma ukugcinwa kwamaphaneli elanga noma izinjini zomoya ezincane.

5. Izinzuzo Zomkhiqizo Eziphoqayo zama-SRCDs
Ama-SRCD anikeza isethi ehlukile yezinzuzo eziqinisa indima yawo kumasu esimanje okuphepha kukagesi:

1. Ukuvikela Okuqondisiwe, Okwenziwe Kwasendaweni: Inzuzo yabo eyinhloko. Banikeza ukuvikelwa kwe-RCDkuphelaokokusebenza okuxhunywe kuzo. Iphutha kumshini owodwa lihamba kuphela i-SRCD, lishiye amanye amasekethe nezinto zikagesi zingathinteki. Lokhu kuvimbela ukulahleka kwamandla okungadingekile nokuphazamisayo kuyo yonke isekethe noma isakhiwo - inkinga ebalulekile ngama-RCD angaguquki ("ukukhubeka kwenkathazo").
2. Ubulula be-Retrofit & Ukuvumelana nezimo: Ukufaka ngokuvamile kulula njengokuxhuma i-SRCD ku-outlet yesokhethi evamile ekhona. Asikho isidingo sabasebenza ngogesi abaqeqeshiwe (ezifundeni eziningi zezinhlobo ze-plug-in), ukuguqulwa kwezintambo okuyinkimbinkimbi, noma ukuguqulwa kweyunithi yabathengi. Lokhu kwenza ukuthuthukisa ukuphepha kube lula ngendlela emangalisayo futhi kungabizi, ikakhulukazi ezakhiweni ezindala.
3. Ukuphatheka: Ama-Plug-in SRCDs angahanjiswa kalula aye noma yikuphi lapho ukuvikelwa okudingeka khona kakhulu. Yithathe eshabhu yegalaji uye engadini, noma ukusuka komunye umsebenzi wokwakha uye komunye.
4. Ukusebenza Kwezindleko (Ngephuzu ngalinye Lokusetshenziswa): Nakuba izindleko zeyunithi ye-SRCD ziphakeme kunesokhethi evamile, ziphansi kakhulu kunezindleko zokufaka isekethe entsha ye-RCD engaguquki noma ukuthuthukisa iyunithi yomthengi, ikakhulukazi uma ukuvikelwa kudingekile kuphela ezindaweni ezithile ezimbalwa.
5. Ukuphepha Okuthuthukisiwe Ezindaweni Ezisengozini Ephezulu: Ihlinzeka ngokuvikeleka okubalulekile ngokunembile lapho ingozi inkulu khona (izindlu zangasese, amakhishi, ngaphandle, izindawo zokusebenzela), ukugcwalisa noma ukufaka esikhundleni sama-RCD angaguquki okungenzeka angazifaki lezi zindawo ngazinye.
6. Ukuthobelana Namazinga Esimanje: Kusiza ukuhlangabezana nemithetho eqinile yokuphepha kukagesi (isb., IEC 60364, imithetho kazwelonke yezintambo ezifana ne-BS 7671 e-UK, i-NEC yase-US nezimpahla ze-GFCI ezifana nezifanayo) ezigunyaza ukuvikelwa kwe-RCD yezindawo zokuphuma ezisekelweni ezithile nezindawo, ikakhulukazi ekwakhiweni okusha nasekulungisweni. Ama-SRCD aqashelwa ngokusobala kumazinga afana ne-IEC 62640.
7. Ukuqinisekisa Okulungele Umsebenzisi: Inkinobho yokuhlola ehlanganisiwe ivumela abasebenzisi abangebona abezobuchwepheshe ukuthi baqinisekise kalula futhi njalo ukuthi umsebenzi wokuvikela wedivayisi uyasebenza.
8. I-Tamper-Resistant Shutters (TRS): Ukuphepha kwezingane okuhlanganisiwe kuyisici esijwayelekile, esinciphisa kakhulu ingozi yokushaqeka kwezinto ezifakwa kusokhethi.
9. Ukuzwela Okucaciswe Kwedivayisi: Ivumela ukukhetha ukuzwela okuphelele (isb, 10mA, 30mA, Uhlobo A, F) kolunye uhlelo lokusebenza oluvikelekile.
10. Ukunciphisa Ukuba Sengozini Ekuhambeni Okuwuhlupho: Ngenxa yokuthi baqapha kuphela ukuvuza kwamanje komshini owodwa, ngokuvamile abasengozini encane yokukhubeka okubangelwa ukuvuza okuhlangene, okungenangozi kwangemuva kwezinto zikagesi eziningi kusekethe evikelwe i-RCD eyodwa engashintshi.
11. Ukuphepha Kwamandla Esikhashana: Isixazululo esifanelekile sokuqinisekisa ukuphepha lapho usebenzisa imikhondo enwetshiwe noma amajeneretha ngezidingo zamandla zesikhashana kumasayithi noma imicimbi.

6. Ama-SRCD vs. Ama-RCD Angaguquki: Izindima Ezihambisanayo
Kubalulekile ukuqonda ukuthi ama-SRCD awakona ukumiselela ama-RCD angaguquki kuyunithi yabathengi, kodwa ayisixazululo esihambisanayo:

• Ama-RCD Alungisiwe (Kuyunithi Yabathengi):
  • Vikela wonke amasekhethi (amasokhethi amaningi, izibani).
  • Idinga ukufakwa kochwepheshe.
  • Nikeza ukuvikeleka okuyisisekelo okubalulekile kwezintambo kanye nezinto zikagesi ezingashintshi.
  • Iphutha elilodwa linganqamula amandla kuzitolo/izinto ezisetshenziswayo eziningi.
• Ama-SRCDs:
  • Vikela umshini owodwa kuphela oxhunywe kuwo.
  • Ukufakwa okulula kwe-plug-in (izinhlobo eziphathwayo).
  • Nikeza ukuvikela okuhlosiwe kwezindawo ezinobungozi obukhulu nezinto zikagesi eziphathwayo.
  • Iphutha lihlukanisa kuphela into esetshenziswayo enephutha.
  • Nikeza ukuphatheka kalula kanye ne-retrofit kalula.

Isu eliqine kakhulu lokuphepha kukagesi livamise ukusebenzisa inhlanganisela: ama-RCD angaguquki ahlinzeka ngokuvikeleka kweleveli yesekethe (okungenzeka njengama-RCBO okukhethwa kwesekethe ngayinye) alekelelwa ama-SRCD ezindaweni engcuphe enkulu noma okokusebenza okuthile okuphathekayo. Le ndlela enezingqimba inciphisa kokubili ubungozi nokuphazamiseka.

7. Amazinga Nemithethonqubo: Ukuqinisekisa Ukuphepha Nokusebenza
Ukuklanywa, ukuhlolwa, kanye nokusebenza kwama-SRCDs kubuswa amazinga aqinile wamazwe ngamazwe nawezwe. Izinga elibalulekile lithi:

• I-IEC 62640:Amadivayisi amanje ayinsalela anokuvikela okudlulele noma angenawo amasokhethi-outlets (SRCDs).Leli zinga lichaza izidingo ezithile zama-SRCD, okuhlanganisa:
  • Izidingo zokwakha
  • Izici zokusebenza (ukuzwela, izikhathi zokukhubeka)
  • Izinqubo zokuhlola (umakhenikha, ugesi, imvelo)
  • Ukumaka kanye nemibhalo

Ama-SRCD kufanele futhi athobele izindinganiso ezifanele zamasokhethi-outlet (isb, i-BS 1363 yase-UK, AS/NZS 3112 e-Australia/NZ, ukulungiselelwa kwe-NEMA e-US) kanye namazinga ajwayelekile e-RCD (isb, IEC 61008, IEC 61009). Ukuthobelana kuqinisekisa ukuthi idivayisi ihlangabezana nemigomo ebalulekile yokuphepha nokusebenza. Bheka izimpawu zesitifiketi ezinhlakeni ezaziwayo (isb., CE, UKCA, UL, ETL, CSA, SAA).

Isiphetho: Isendlalelo Esibalulekile Kunethiwekhi Yokuphepha
I-Socket-Outlet Residual Current Devices imelela inguquko enamandla nesebenzayo kubuchwepheshe bokuphepha kukagesi. Ngokuhlanganisa ukutholwa kwamanje okuyinsalela esindisa ukuphila ngokuqondile endaweni yokukhipha amasokhethi yonke indawo, ama-SRCD aletha isivikelo esiqondiswe kakhulu, esivumelana nezimo, nesisebenziseka kalula ezingozini ezihlala zikhona zokushaqeka kukagesi nomlilo. Izinzuzo zabo - ukuvikelwa kwendawo okususa uhambo lwesifunda oluphazamisayo, ukulungisa kabusha okungenamsebenzi, ukuphatheka, ukonga kwezindleko zamaphoyinti athile, nokuthobela iziyalezo zokuphepha zesimanje - kuwenza abaluleke kakhulu kuzo zonke izindawo zokuhlala, ezohwebo, zezimboni, nezikhethekile.

Kungakhathaliseki ukuthi ukuthuthukisa ikhaya elidala elingenawo ama-RCD, ukuvikela amathuluzi kagesi endaweni yokwakha, ukuvikela iphampu yedamu engadini, noma ukumane ungeze ungqimba olwengeziwe lokuphepha ekamelweni lengane, i-SRCD imile njengomgadi oqaphile. Inika amandla abasebenzisi ukuthi balawule ngokuqondile ukuphepha kwabo kukagesi lapho bewusebenzisa. Njengoba amasistimu kagesi eba yinkimbinkimbi futhi namazinga okuphepha eqhubeka nokuvela, i-SRCD ngokungangabazeki izohlala iwubuchwepheshe obuyisisekelo, iqinisekisa ukuthi ukufinyelela kumandla akuzi ngezindleko zokuphepha. Ukutshala imali kuma-SRCDs kuwutshalomali ekuvimbeleni inhlekelele kanye nokuvikela okubaluleke kakhulu.