I. IiNgcebiso eziSisiseko zeeBhokisi zoSasazo
Ibhokisi yokuhambisa sisixhobo esingundoqo kwisixokelelwano samandla esisetyenziselwa ukuhanjiswa okuphakathi kwamandla ombane, ulawulo lweesekethe kunye nokukhuselwa kwezixhobo zombane. Ihambisa amandla ombane ukusuka kwimithombo yamandla (njengabaguquli) kwizixhobo ezahlukeneyo zombane kwaye idibanisa imisebenzi yokukhusela efana nokugqithisa, isiphaluka esifutshane kunye nokuvuza.

Eyona nto isetyenziswayo:

Ukusasazwa kunye nokulawulwa kwamandla ombane (njengamandla ombane okukhanyisa kunye nezixhobo zombane).

Ukukhuselwa kwesekethe (umthwalo ogqithisileyo, isiphaluka esifutshane, ukuvuza).

Ukubeka iliso kwimo yesiphaluka (i-voltage kunye nomboniso wangoku).

Ii. Ukuhlelwa kweeBhokisi zoKwabiwa
Ngeemeko zesicelo:

Ibhokisi yokuhanjiswa kwendlu: Incinci ngobukhulu, kunye nenqanaba eliphantsi lokhuseleko, ukudibanisa ukukhuselwa kokuvuza, ukutshintshwa komoya, njl.

Ibhokisi yokusasazwa kwezoshishino: Umthamo omkhulu, izinga eliphezulu lokukhusela (IP54 okanye ngaphezulu), lixhasa ulawulo lwesiphaluka esiyinkimbinkimbi.

Ibhokisi yokuhanjiswa kwangaphandle: Ukungangeni kwamanzi kunye nothuli (IP65 okanye ngaphezulu), ifanelekile kwiindawo ezivulekileyo.

Ngendlela yokuhlohla:

Uhlobo lokufakela oluveziweyo: Ukulungiswa ngokuthe ngqo eludongeni, kulula ukuyifaka.

Uhlobo olufihliweyo: Ifakwe eludongeni, iyathandeka ngobuhle kodwa ulwakhiwo lunzima.

Ngokwemo yolwakhiwo:

Uhlobo olusisigxina: Amacandelo afakwe ngendlela echanekileyo, enexabiso eliphantsi.

Uhlobo lwedrowa (ibhokisi yokuhambisa imodyuli) : Uyilo lwemodyuli, olulungele ukugcinwa kunye nokwandiswa.

Iii. Ubume boBume beeBhokisi zoSasazo
Umzimba webhokisi:

Izinto eziphathekayo: Isinyithi (ipleyiti yensimbi epholileyo, insimbi engenasici) okanye engeyiyo isinyithi (iplastiki yobunjineli).

Inqanaba lokukhusela: Iikhowudi ze-IP (ezifana ne-IP30, IP65) zibonisa uthuli kunye namandla okumelana namanzi.

Amalungu ombane angaphakathi:

I-Circuit breakers: Ukugqithiswa / ukukhuselwa kwexesha elifutshane (ezifana nokutshintsha umoya, i-molded case circuit breakers).

Isixhumi: Cima unikezelo lombane ngesandla.

Isixhobo sokukhusela ukuvuza (RCD) : Ifumanisa ukuvuza kwangoku kunye nohambo.

Imitha yombane: Ukulinganisa amandla ombane.

Umnxibelelanisi: Ulawula ukude uvule kunye nokucima isekethe.

I-Surge protector (SPD) : Ikhusela ekubetheni kombane okanye umbane ogqithisileyo.

Amacandelo ancedisayo:

Iibhasi (i-copper okanye i-aluminium busbars), iibhloko ze-terminal, izibane zesalathisi, abalandeli bokupholisa, njl.

Iv. IiParameters zobuGcisa zebhokisi yokuhambisa
Ilinganiswe ngoku: njenge-63A, 100A, 250A, ekufuneka ikhethwe ngokusekelwe kumandla apheleleyo omthwalo.

I-voltage elinganisiweyo: Ngokuqhelekileyo i-220V (isigaba esinye) okanye i-380V (isigaba esithathu).

Umgangatho wokhuseleko (IP) : njenge-IP30 (ubungqina bothuli), i-IP65 (ubungqina bokungena kwamanzi).

Ukunyamezela kwesekethe emfutshane: Ixesha lokumelana nombane omfutshane (ofana ne-10kA/1s).

Umthamo wokuqhawula: Ubuninzi bempazamo yangoku ukuba i-breaker circuit inokunqunyulwa ngokukhuselekileyo.

V. Isikhokelo sokuKhetha iiBhokisi zoSasazo
Ngokohlobo lomthwalo:

Isekethe yokukhanyisa: Khetha i-10-16A i-miniature circuit breaker (MCB).

Izixhobo zemoto: Iireyilayi ze-Thermal okanye ii-motor-specific circuit breakers kufuneka zihambelane.

Iindawo ezinovakalelo oluphezulu (ezifana namagumbi okuhlambela) : Kufuneka kufakwe isixhobo sokukhusela ukuvuza (30mA).

Ukubalwa komthamo

Ixabiso elipheleleyo langoku ≤ umlinganiselo olinganisiweyo webhokisi yokusabalalisa × 0.8 (umda wokhuseleko).

Ngokomzekelo, amandla omthwalo opheleleyo ngama-20kW (isigaba sesithathu), kwaye okwangoku malunga ne-30A. Kunconywa ukuba ukhethe ibhokisi yokusabalalisa i-50A.

Ukuziqhelanisa nokusingqongileyo

Ubume obumanzi: Khetha umzimba webhokisi yensimbi engenasici + ibakala lokhuseleko eliphezulu (IP65).

Indawo yobushushu obuphezulu: Imingxunya yokukhupha ubushushu okanye iifeni ziyafuneka.

Iimfuno ezongeziweyo:

Gcina i-20% yendawo engenanto ukuququzelela ukongezwa kweesekethe ezintsha kamva.

Vi. UkuFakelo kunye noLondolozo
Iimfuno zokuhlohla:

Indawo yomile kwaye ingena umoya, kude nezinto ezinokutsha.

Ibhokisi isekelwe ngokuthembekileyo ukukhusela umngcipheko wokuvuza kombane.

Iinkcukacha zombala wocingo (ucingo oluphilayo olubomvu/mthubi/luhlaza, ucingo olungathathi hlangothi olubhlowu, ucingo lomhlaba olutyheli buluhlaza).

Amanqaku aphambili ogcino:

Jonga rhoqo ukuba i-wiring ikhululekile okanye i-oxidized.

Coca uthuli (ukuphepha iisekethe ezimfutshane).

Vavanya isixhobo sokukhusela (njengokucofa iqhosha lovavanyo lokukhusela ukuvuza kanye ngenyanga).

Vii. Iingxaki eziqhelekileyo kunye nezisombululo
Ukukhubeka rhoqo

Unobangela: Ukugcwala, isiphaluka esifutshane okanye ukuvuza.

Ukuxazulula iingxaki: Nqamula umgca womthwalo ngomgca kwaye ufumane indawo yesiphaluka ephosakeleyo.

Ukukhubeka kwesixhobo sokukhusela ukuvuza

Okunokwenzeka: I-insulation eyonakalisiwe yesekethe, ukuvuza kombane kwisixhobo.

Unyango: Sebenzisa i-megohmmeter ukuvavanya ukuxhathisa kwe-insulation.

Ibhokisi ishushu kakhulu.

Unobangela: Ukugcwala okanye ukunxibelelana kakubi.

Isisombululo: Nciphisa umthwalo okanye qinisa iibhloko zetheminali.

Viii. Imigaqo yoKhuseleko
Kufuneka ihambelane nemigangatho kazwelonke (efana ne-GB 7251.1-2013 “Low-voltage Switchgear Assemblies”).

Xa ufaka kwaye ugcina, amandla kufuneka anqunyulwe kwaye umsebenzi kufuneka wenziwe ngabachwephesha bombane.

Akuvumelekanga ukuguqula iisekethe zangaphakathi ngokuthanda okanye ukususa izixhobo zokukhusela.