Amasekhethi amagatsha akha umgogodla oyisisekelo wawo wonke amanethiwekhi okusabalalisa ugesi, eletha amandla kusukela kumshini wokugcina wokuvikela ukugcwala kwegesi kuya ezindaweni zokuxhuma, izibani, nezinto zikagesi ezisezindaweni zokuhlala, ezohwebo, nezimboni. Ngaphandle kwamasekhethi amagatsha aklanywe kahle futhi agcinwe kahle, ingqalasizinda yonke kagesi iba sengozini yokwehluleka okuyingozi, izingozi zomlilo, nokulahlekelwa yisikhathi okubizayo. Ukuqonda ubunkimbinkimbi bezobuchwepheshe bokuklanywa kwamasekhethi amagatsha, okuhlanganisa umehluko obalulekile phakathi kokucushwa okujwayelekile nokunemigwaqo eminingi, kubalulekile konjiniyela bakagesi, abaphathi bezikhungo, nabahloli bezokuphepha ngokufanayo. Iphutha elilodwa ekukalweni noma ekuvikelweni kwezifunda zamasekhethi lingaholela emiphumeleni eyinhlekelele, kugcizelela isidingo sezingxenye eziqinile nezinqubo zokufaka ezingochwepheshe. Lesi sihloko sihlola izimiso eziyisisekelo zokuphepha kwamasekhethi amagatsha, sihlole izingozi ezivamile kodwa ezivame ukunganakwa, futhi sethula ukuthi izixazululo ezithuthukile ezivela kubaholi bezimboni zingazinciphisa kanjani kakhulu lezi zingozi.

Igrid yakagesi yanamuhla incike kumasekhethi amaningi axhumene axhumene asebenza ngokuthembekile njalo nsuku zonke, ngokuvamile ngaphandle kwezimpawu ezibonakalayo zokucindezeleka noma ukwehluleka okuzayo. Umjikelezo ngamunye wegatsha kufanele ulungiswe ngokucophelela ukuze ufane nomthwalo othile owusebenzelayo, noma ngabe lowo mthwalo uyimotor yezimboni edinga amandla amakhulu noma umjikelezo olula wokukhanyisa wezindlu. Ukuthobela i-National Electrical Code (NEC) kunikeza isisekelo sokuphepha, kodwa ukuvikelwa kwangempela kudlula kude nezidingo ezincane zekhodi futhi kufuna izingxenye zekhwalithi ephezulu nokunakekelwa okuqaphile. Abanikazi bezakhiwo nochwepheshe bakagesi kumele baqaphele ukuthi ukwehluleka kwamasekhethi egatsha akuphazamisi nje kuphela ukusebenza, kodwa kubuye kube usongo lwangempela ekuphileni komuntu nasezakhiweni. Ngokutshala imali kubuchwepheshe obuphezulu bokuvikela amasekhethi nokunamathela ezenzweni ezinhle kakhulu, izinhlangano zingaqinisekisa kokubili ukuphepha nokuqhubeka kokusebenza.

Iseketi ejwayelekile yegatsha ngokuvamile iqukethe i-conductor yesigaba esisodwa, i-conductor ye-neutral ephansi, kanye ne-conductor yokufaka phansi, konke kuvikelwe idivayisi ye-overcurrent ezinikezelwe epanini lezokuphepha. Lokhu kuhlelwa okulula kuwuhlobo oluvame kakhulu olutholakala ezindaweni zokuhlala nezohwebo oluncane, okunika amandla ama-receptacle ajwayelekile kanye nemithwalo yokukhanyisa ngokusebenza okubikezelwayo. Amaseketi ajwayelekile egatsha alula ukuwaklama nokuwafaka, okwenza kube yisixazululo esingabizi kakhulu ezidingweni eziningi ezijwayelekile zikagesi. Nokho, ubulula bazo busho nokuthi noma yikuphi ukugcwala ngokweqile noma isimo sephutha singathinta ngqo imishini exhunyiwe futhi sidale izingozi zokuphepha uma amadivayisi okuvikela engalinganiswanga kahle. Ezinhlelweni ezidinga ukwethembeka okuphezulu nokuguquguquka, ezinye izinhlobo zamaseketi njengamaseketi egatsha anezintambo eziningi zinganikeza izinzuzo ezihlukile.

Umjikelezo wegatsha olunezintambo eziningi, ovame ukubizwa emkhakheni njengomjikelezo wegatsha olunezintambo eziningi, usebenzisa i-conductor engathathi hlangothi ehlanganyelwe ukusebenzela ama-conductor amabili noma ngaphezulu angagxiliwe emhlabathini avela ezigabeni ezahlukene noma ezihlukene zobuningi benkonzo efanayo. Lo mklamo unganciphisa kakhulu inani lethusi elidingekayo ukuze kufakwe ukufakwa kuyilapho kusaleleka amandla athembekile emithwalweni eminingi, okwenza kube ukukhetha okudumile ezindaweni zokuhweba nezimboni. Nokho, umjikelezo wegatsha olunezintambo eziningi udinga ukunakwa okukhulu ezenzweni zokufaka izintambo ezifanele ngoba ukuxhumana okungavulekile noma okuxekethile kwe-neutral kungabangela izimo zokushaja ngokweqile ezinzima emlenzeni owodwa, okungenzeka kulimaze imishini ebucayi futhi kudale izingozi zomlilo. Ochwepheshe bakagesi kumele baqinisekise ukuthi i-conductor engathathi hlangothi egxiliwe ayihlanganyelwa emijikelezweni evela ezigabeni ezahlukene ngaphandle kwezibopho ezifanele zama-breaker kanye nezibopho zokuphatha njengoba kudingwa yi-NEC. Uma ifakwe ngendlela efanele, imijikelezo yegatsha elinezintambo eziningi inikeza ukusebenza kahle nokusebenza okuhle kakhulu, kodwa ayithetheleli amaphutha okufaka.

Umehluko phakathi kwemijikelezo yamagatsha ajwayelekile nokucushwa kwezintambo eziningi kubalulekile kunoma ubani ohileleke ekuklanyweni kukagesi noma ekunakekelweni. Indlela ngayinye inezinzuzo zayo, imikhawulo, kanye nezimfuneko ezithile zamakhodi okufanele zilandelwe ukuze kuqinisekiswe ukusebenza okuphephile. Ochwepheshe abasebenza ngemijikelezo yamagatsha enezintambo eziningi kumele baqaphe kakhulu ngosayizi we-neutral conductor, ukulinganisela kwesigaba, kanye nokusetshenziswa kwama-common-trip breakers ukuze bahambisane nemithetho ye-NEC. Ukunganaki lezi zinto kungaholela ezimweni zokulayisha ngokweqile kwe-neutral eziyingozi futhi okunzima ukuzihlola ngaphandle kwemishini ekhethekile yokuhlola. Ngokuthuthukisa ukuqonda okujulile kokubili ukwakheka kwemijikelezo yamagatsha ajwayelekile nanezintambo eziningi, ochwepheshe bakagesi bangenza izinqumo ezinolwazi ezithuthukisa ukuphepha nokuthembeka kwesistimu.

Enye yezingozi ezicashe kakhulu ezinhlelweni zokusabalalisa ugesi, ikakhulukazi kumasekethe amagatsha anezintambo eziningi, ukulayishwa ngokweqile kwe-neutral okubangelwa imisinga ye-harmonic kanye nokungalingani kwemithwalo ezigabeni ezahlukene. Lapho imithwalo exhunywe ohlelweni lwe-multiwire ingalinganiswanga kahle, i-conductor ye-neutral ingathwala imisinga edlula umthamo wayo olinganiselwe, okuholela ekushiseni ngokweqile, ukucekelwa phansi kwe-insulation, kanye nezingozi zomlilo. Ukungalingani kwezigaba kungenye inkinga evamile evela lapho imithwalo yegesi eyodwa isatshalaliswa ngokungalingani ohlelweni lwezigaba ezintathu, okubangela ukushintshashintsha kwe-voltage okunciphisa ukusebenza kahle kwemishini futhi kusheshise ukuguga kwamamotho nama-transformer. Lezi zimo zivame ukungabonwa ngoba ama-breaker ajwayelekile e-thermal-magnetic angase angavuli ngaphansi kwezimo zokulayishwa ngokweqile okuqhubekayo ku-neutral, kushiya uhlelo lusebenza esimweni esiyingozi. Ukuhlolwa okuvamile kwe-thermal imaging kanye nokuhlaziya ikhwalithi yamandla kungamathuluzi abalulekile okubona lezi zinkinga ezifihlekile ngaphambi kokuba zikhule zibe ukwehluleka okukhulu.

Ngaphezu kokugcwala ngokweqile kanye nokungalingani kwezigaba, imijikelezo yamagatsha ibhekana nezinsongo ezengeziwe ezifana namaphutha e-arc, amaphutha omhlabathi, kanye nokujikeleza okufushane okungabeka engozini ukuphepha. Amaphutha e-arc, ikakhulukazi, ayimbangela ehamba phambili yemililo kagesi ezakhiweni zokuhlala nezohwebo, ngokuvamile abangelwa ukulimala kwe-insulation, ukuxhumana okuxekethile, noma izintambo ezigugile. I-NEC iphendule kulobu bungozi ngokudinga ama-arc-fault circuit interrupters (AFCIs) ezindaweni eziningi zokwakha okusha, kodwa ukufakwa okudala kusengase kuswele lokhu kuvikelwa okubalulekile. Amaphutha omhlabathi abeka enye ingozi enkulu, ikakhulukazi ezindaweni ezimanzi noma ezinomswakama, lapho ngisho nokuvuza okuncane kukagesi kungabangela ukushaywa ugesi. Ukuqonda lezi zingozi yisinyathelo sokuqala ekuqaliseni amasu okuvikelwa asebenzayo avikela abantu kanye nempahla.

I-Huachuan High-Tech inikeza uhlu olubanzi lwemishini yokuvikela amasekhethi ye-Eaton Bussmann enikeza ukuvikelwa okukhethekile kokugcwala kakhulu ezinhlobonhlobo zezinhlelo zamasekhethi amagatsha. I-ImikhiqizoUhlu luhlanganisa ama-fuse e-UL, ama-fuse alinganiswe nge-IEC, kanye nezixazululo ezikhethekile ze-EV nezamandla elanga eziklanyelwe ukusabela ngokushesha ezimweni zokulayisha ngokweqile nokujikeleza okufushane. Idivayisi ngayinye iklanywe ngokucophelela ukuze inqamule imisinga yephutha ngaphambi kokuba ilimaze izintambo, imishini, noma abantu abaseduze, inikeze ungqimba olubalulekile lokuphepha kunoma yikuphi ukufakwa kukagesi. Ukunemba kwala ma-fuse kuqinisekisa ukuthi asebenza ngaphakathi kwezici zokuhamba kwesikhathi ezilawulwa ngokuqinile, kunciphisa ubungozi bokuphazamiseka okungadingekile kuyilapho kugcina ukuvikelwa okuqinile. Kubaphathi bezakhiwo nonjiniyela bakagesi, ukukhetha idivayisi efanele yokuvikela ukulayisha ngokweqile isinqumo esiyisisekelo esithinta ngqo ukuthembeka nokuphepha kwesistimu.

Ukuze kulwisane nosongo olukhulayo lwemililo kagesi ebangelwa amaphutha e-arc, i-Huachuan High-Tech ihlanganisa amandla athuthukile okuthola amaphutha e-arc ezixazululweni zayo zokuvikela imijikelezo kagesi, isiza ukuhlonza izimo eziyingozi ze-arc ngaphambi kokuba zivuthise izinto ezizungezile. Le mishini ehlakaniphile iqhubeka iqapha i-waveform kagesi ukuze ithole izimpawu ezihlukile zamaphutha e-arc alandelanayo nafanayo, ihlukanise namashintshi ajwayelekile okweqa kanye nokushintshashintsha komthwalo. Lapho kutholakala iphutha le-arc, umshini unqamula umjikelezo ngemizuzwana eyizinkulungwane, wehlise kakhulu amandla akhishwa endaweni yephutha futhi avimbele imililo engaba khona. Leli zinga lokuvikela libaluleke kakhulu ezakhiweni ezindala lapho ukugqokwa kwezintambo kungenzeka sekuwohloke ngokuhamba kwesikhathi, kanye nasezikhungweni zesimanje ezinokusabalalisa kagesi okuminyene kakhulu. Ngokufaka ukutholwa kwamaphutha e-arc emikhiqizweni yabo, i-Huachuan High-Tech ibonisa ukuzibophezela okujulile ekuvimbeleni imbangela evame kakhulu yemililo kagesi.

Zonke izingxenye zomugqa we-Huachuan High-Tech Eaton Bussmann zakhelwe ukumelana nezimo zemvelo ezinzima, okuhlanganisa amazinga okushisa ashubile, umswakama, ukudlidliza, kanye nemvelo egqwala evame ukutholakala ezindaweni zezimboni. Ukwakheka okuqinile kwalezi zinsimbi zokugawula (fuses) nezibambi zazo kuqinisekisa ukusebenza okuthembekile iminyaka eminingi, kunciphisa izindleko zokunikela ngempahla futhi kunciphisa imvamisa yokushintshwa. Izinqubo eziqinile zokulawula ikhwalithi kanye nokuhambisana namazinga omhlaba wonke kuqinisekisa ukuthi umkhiqizo ngamunye uyahlangabezana noma udlula izimfuneko ezidingekayo zokuvikela amasekhethi abalulekile. Lokhu kuqina kubaluleke kakhulu ekufakweni kwamasekhethi amaningi lapho ukufinyelela kokulungisa kungase kube kuncane futhi isikhathi sokuma somsebenzi siba nemiphumela emibi kwezimali. Amakhasimende akhetha imikhiqizo ye-Huachuan High-Tech angaqiniseka ukuthi utshalomali lwakhe luzoletha ukuvikelwa okungaguquki, kwesikhathi eside.

Ukufakwa okufanele yisona sici esibaluleke kakhulu ekuqinisekiseni ukuphepha nokuthembeka kwanoma yimuphi umjikelezo wegatsha, kungakhathaliseki ukuthi ukucushwa okujwayelekile noma okunezintambo eziningi. Zonke izixhumanisi kufanele ziqiniswe ngokusho kwemininingwane yomkhiqizi kusetshenziswa amathuluzi akalisiwe, ngoba ukuxhumana okungaxineki kuyimbangela enkulu yamaphutha e-arc nokushisa ngokweqile kumaphaneli kagesi. Izintambo kufanele zikalwe ngokucophelela ngokuya ngamatafula e-NEC ampacity futhi zehliswe ngenxa yokushisa kwendawo, ukugcwala kwepayipi, kanye nokuba khona kwemisinga ye-harmonic engakhuphula umthwalo we-neutral. Lapho ufaka imijikelezo yegatsha enezintambo eziningi, kubalulekile ukusebenzisa ama-breaker e-common-trip noma ama-handle ties ukuze kuqinisekiswe ukuthi zonke izintambo ezingagqinsiwe ziyanqanyulwa kanyekanye ngezimo zamaphutha, kuvikelwa kokubili imishini nabasebenzi. Ngaphezu kwalokho, ukulebula wonke umjikelezo ngokucacile epanini lokufaka kanye nendawo ngayinye yokuphuma kagesi kusiza ekutholeni inkinga kalula futhi kunciphisa ubungozi bamaphutha omuntu ngesikhathi sokulungisa.

Ukulandela izidingo ezithile ezibalulwe ku-Ikhayaizinganiso zokuphepha kanye ne-NEC 430.52 kubalulekile lapho kuklanywa amasekhethi amagatsha emoto, njengoba le ngxenye yekhodi ilawula isilinganiso noma ukusethwa kwezinto zokuvikela ezifushane zamasekhethi amagatsha emoto kanye nokuvikela amaphutha omhlaba. Izimfuneko ze-NEC 430.52 zidinga ukuthi idivayisi yokuvikela ikhethwe ukuze ivumele imisinga yokuqalisa emoto kuyilapho isanikeza ukuvikelwa okwanele ekulayisheni okungapheli noma amaphutha, okudinga ukusebenzisana ngokucophelela phakathi komsinga wokugcwala kwemoto kanye nejika lesikhathi samanje sedivayisi. Ukwehluleka ukulandela le mihlahlandlela kungaholela ekuphazamisekeni okungadingekile okuphazamisa ukusebenza, noma okubi kakhulu, ukuvikelwa okunganele okushiya isekethe lemoto lisengozini yokwehluleka okubi kakhulu. Onjiniyela kufanele bahlale beqinisekisa ukuthi i-fuse noma i-breaker ekhethiwe isebenzisana kahle nama-overload relay esiqalisi semoto nokuthi ama-conductor esekethe legatsha alinganiswe ukuze aphathe umsinga we-locked-rotor. Ukubonisana nohlelo lwakamuva lwe-NEC kanye nokusebenza nochwepheshe bakagesi abanokuhlangenwe nakho kuyindlela engcono kakhulu yokuqinisekisa ukufakwa okuphephile nokuhambisana nemithetho.

I-Shenzhen Huachuan High-Tech Electronics Co., Ltd., eyaziwa embonini ngokuthi i-Huachuan High-Tech, isizimise njengomhlinzeki oyinhloko ogunyaziwe wezixazululo zokuvikela imijikelezo ye-Eaton Bussmann, inikeza inhlanganisela engafaniswa yekhwalithi yomkhiqizo nobuchwepheshe bezobuchwepheshe. Njengoba kuchaziwe ku-Mayelana Nathiikhasi, inkampani inephothifoliyo ebanzi yezitifiketi zomhlaba wonke ezifakazela ukuthembeka nokuphepha kwawo wonke umkhiqizo abawuhlinzekayo. Ithimba labo lonjiniyela abanokuhlangenwe nakho linikeza ukwesekwa kwezobuchwepheshe okuphelele ukuze kusizwe amakhasimende ekukhetheni izinto ezifanele zokuvikela ngisho nasezicelweni eziyinselele kakhulu zamagatsha omjikelezo, kuqinisekiswe ukusebenza kahle nokuthobela amakhodi. Ukuzibophezela kwenkampani ekwanelisekeni kwamakhasimende kubonakala enkonzweni yabo esheshayo nokuzimisela kwabo ukuya ngalé kobudlelwano obuyisisekelo bokuhweba ukuze babe umlingani weqiniso ekuphepheni kukagesi.

Ukukhetha i-Huachuan High-Tech kusho ukuthola ukufinyelela eningini lempahla yemikhiqizo ye-Eaton Bussmann, okuhlanganisa ama-fuse, iziphathi, nezinsiza ezihlanganisa zonke izigaba zamandla kagesi nezidingo zokusebenza. I-Xhumana Nathiikhasi linikeza izindlela eziqondile zokubuza, liqinisekisa ukuthi amakhasimende athola izimpendulo ezisheshayo emibuzweni yezobuchwepheshe nosizo olufika ngesikhathi uma e-oda. Ukuqonda okujulile kwenkampani ngezindinganiso zomkhakha, kuhlanganise nokucaciswa kwe-NEC 430.52 nezinye izingxenye ezibalulekile zamakhodi, kubavumela ukuthi banikeze isiqondiso esibalulekile esidlula nje ukuthengisa izingxenye. Ngokubambisana ne-Huachuan High-Tech, amabhizinisi awatholi nje kuphela imishini yokuvikela ugesi esezingeni eliphezulu kodwa futhi azuza olwazini olunqwabelene emashumini eminyaka nasekuzinikeleni ekuthuthukiseni ukuphepha kukagesi. Izibuyekezo ezijwayelekile nolwazi lomkhakha okwabelwana ngalo ngokusebenzisa kwaboIzindaba isigaba sigcina amakhasimende enolwazi mayelana nemithethonqubo eguqukayo nobuchwepheshe obuvelayo emkhakheni wokuvikelwa kwamasekhethi.

Ukuphepha kwesekethe yegatsha akusona isisusa esimile kodwa kuyisibopho esiqhubekayo esidinga ulwazi olufanele, izingxenye ezifanele, kanye nabalingani abafanele ukuze kuzuzwe impumelelo ehlala njalo. Kusukela ekuqondeni umehluko oyisisekelo phakathi kwesekethe yegatsha ejwayelekile neyemigwaqo eminingi kuya ekuqapheleni izingozi ezifihlekile zokulayisha ngokweqile kwe-neutral kanye nokungalingani kwezigaba, ochwepheshe bakagesi kumele bahlale beqaphile kuzo zonke izigaba zokuklama, ukufaka, nokunakekela. I-Huachuan High-Tech ikulungele ukusekela lo msebenzi ngohlu olubanzi lwemikhiqizo ye-Eaton Bussmann ehlinzeka ngokuvikelwa okukhethekile kokugcwala ngokweqile, ukutholwa kwephutha le-arc okuthuthukile, nokuqina okumangalisayo ezindaweni ezidinga kakhulu. Wonke umshini wokuvikela isekethe abawunikezayo usekelwa ukuqinisekiswa okuqinile kanye nethimba lochwepheshe elizinikele ekusizeni amakhasimende ukuthi aqondane nezidingo eziyinkimbinkimbi zamakhodi, okuhlanganisa nezinhlinzeko ezithile ze-NEC 430.52 zama-motor branch circuits. Ngokwenza isinqumo esinamasu sokusebenzisana ne-Huachuan High-Tech, abanikazi bezikhungo kanye nochwepheshe bakagesi bangavikela utshalomali lwabo, baqinisekise ukuphepha kwabahlali bezakhiwo, futhi bathole ukuthula kwengqondo bekwazi ukuthi izinhlelo zabo zikagesi zakhiwe ngezinga eliphezulu kakhulu lekhwalithi nokwethembeka.