I. Imiqondo Eyisisekelo Yamabhokisi Okusabalalisa
Ibhokisi lokusabalalisa liyidivayisi ewumgogodla ohlelweni lwamandla olusetshenziselwa ukusatshalaliswa okuphakathi kwamandla kagesi, ukulawula amasekhethi kanye nokuvikelwa kwezinto zikagesi. Isabalalisa amandla kagesi kusuka emithonjeni yamandla (njengama-transformer) kuya kumathuluzi kagesi ahlukahlukene futhi ihlanganisa imisebenzi yokuvikela efana nokugcwala ngokweqile, ukujikeleza okufushane nokuvuza.

Ukusetshenziswa okuyinhloko:

Ukusatshalaliswa nokulawulwa kwamandla kagesi (njengokunikezwa kwamandla okukhanyisa kanye nempahla yamandla).

Ukuvikelwa kwesifunda (ukulayisha ngokweqile, isifunda esifushane, ukuvuza).

Gada isimo sesekhethi (i-voltage nesibonisi samanje).

Ii. Ukuhlukaniswa kwamabhokisi okusabalalisa
Ngezimo zohlelo lokusebenza:

Ibhokisi lokusabalalisa lasendlini: Lincane ngosayizi, elinezinga eliphansi lokuvikela, elihlanganisa ukuvikela ukuvuza, ukushintsha komoya, njll.

Ibhokisi lokusabalalisa izimboni: Umthamo omkhulu, izinga eliphezulu lokuvikela (IP54 noma ngaphezulu), elisekela ukulawulwa kwesifunda okuyinkimbinkimbi.

Ibhokisi lokusabalalisa langaphandle: Ingangenwa amanzi futhi ingangenisi uthuli (IP65 noma ngaphezulu), ifanele indawo evulekile.

Ngendlela yokufaka:

Uhlobo lokufaka oluveziwe: Igxiliswe ngokuqondile odongeni, kulula ukuyifaka.

Uhlobo olufihliwe: Kushunyekwe odongeni, kuyathandeka kodwa ukwakhiwa kuyinkimbinkimbi.

Ngesakhiwo:

Uhlobo olungaguquki: Izingxenye zifakwa ngendlela engaguquki, ngezindleko eziphansi.

Uhlobo lwedrowa (ibhokisi lokusabalalisa eliyimojuli) : Idizayini eyimojuli, elungele ukulungiswa nokunwetshwa.

Iii. Isakhiwo Sokuqanjwa Kwamabhokisi Okusabalalisa
Umzimba webhokisi:

Material: Insimbi (insimbi egoqekayo ebandayo, insimbi engagqwali) noma engeyona eyensimbi (ipulasitiki yobunjiniyela).

Izinga lokuvikela: Amakhodi e-IP (afana ne-IP30, IP65) abonisa amandla okumelana nothuli namanzi.

Izingxenye zikagesi zangaphakathi:

Ama-breaker circuit: Ukuvikela ukulayisha ngokweqile/isiyingi esifushane (njengamaswishi omoya, ama-breaker circuit breaker).

Isinqamuleli: Sika ugesi mathupha.

Idivayisi yokuvikela ukuvuza (RCD) : Ithola ukuvuza kwamanje nohambo.

Imitha kagesi: Ukulinganisa amandla kagesi.

I-Contactor: Ilawula ukude ukuvula nokuvala isekethe.

I-Surge Protector (SPD) : Ivikela ekushayweni kombani noma ukugcwala ngokweqile.

Izingxenye ezisizayo:

Amabhasi (amabhasi ethusi noma e-aluminium), amabhlogo wetheminali, amalambu ezinkomba, amafeni okupholisa, njll.

Iv. Amapharamitha Obuchwepheshe webhokisi lokusabalalisa
Isilinganiso samanje: njenge-63A, 100A, 250A, okufanele ikhethwe ngokusekelwe emandleni aphelele omthwalo.

I-voltage elinganiselwe: Ngokujwayelekile i-220V (isigaba esisodwa) noma i-380V (izigaba ezintathu).

Ibanga lokuvikela (IP) : njenge-IP30 (ivikela uthuli), i-IP65 (ivikela amanzi).

Ukukhuthazela kwesiyingi esifushane: Isikhathi sokumelana nomjikelezo wesifunda esifushane (njengo-10kA/1s).

Umthamo wokugqekeza: Iphutha elikhulu lamanje elinganqanyulwa yi-circuit breaker.

V. Umhlahlandlela Wokukhetha Wamabhokisi Okusabalalisa
Ngokusho kohlobo lomthwalo:

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

Imishini yezimoto: Ama-thermal relay noma ama-circuit breaker aqondene nemoto adinga ukufaniswa.

Izindawo ezizwela kakhulu (njengamagumbi okugeza) : Idivayisi yokuvikela ukuvuza (30mA) kufanele ifakwe.

Ukubalwa kwamandla

Inani lamanje ≤ inani lamanje elilinganiselwe lebhokisi lokusabalalisa × 0.8 (imajini yokuphepha).

Isibonelo, amandla okulayisha esewonke angama-20kW (izigaba ezintathu), kanti amanje acishe abe ngu-30A. Kunconywa ukukhetha ibhokisi lokusabalalisa le-50A.

Ukuvumelana nezimo zemvelo

Indawo eswakeme: Khetha umzimba webhokisi lensimbi engagqwali + izinga lokuvikela eliphezulu (IP65).

Indawo enezinga eliphezulu lokushisa: Kudingeka izimbobo zokukhipha ukushisa noma amafeni.

Izimfuneko ezinwetshiwe:

Gcina u-20% wesikhala esingenalutho ukuze usize ukungezwa kwamasekethe amasha kamuva.

Vi. Izinyathelo Zokufaka Nokunakekela
Izidingo zokufaka:

Indawo yomile futhi inomoya omuhle, kude nezinto ezivuthayo.

Ibhokisi lisekelwe ngokuthembekile ukuvimbela ingozi yokuvuza kukagesi.

Ukucaciswa kombala wentambo (intambo ebukhoma ebomvu/ephuzi/eluhlaza okotshani, intambo emaphakathi eluhlaza okwesibhakabhaka, intambo yaphansi ngokuphuzi ngokuluhlaza).

Amaphuzu abalulekile wokulungisa:

Njalo hlola ukuthi i-wiring ikhululekile noma i-oxidized.

Hlanza uthuli (ukugwema amasekhethi amafushane).

Hlola idivayisi yokuvikela (njengokucindezela inkinobho yokuhlola ukuvikela ukuvuza kanye ngenyanga).

Vii. Izinkinga Ezivamile Nezixazululo
Ukukhubeka njalo

Imbangela: Ukugcwala ngokweqile, ukujikeleza okufushane noma ukuvuza.

Ukuxazulula inkinga: Nqamula umugqa wokulayisha ngomugqa bese uthola isifunda esinephutha.

Ukukhubeka kwedivayisi yokuvikela ukuvuza

Okungenzeka: I-insulation eyonakele yesekethe, ukuvuza kukagesi emishinini.

Ukwelashwa: Sebenzisa i-megohmmeter ukuhlola ukumelana nokufakwa kwe-insulation.

Ibhokisi liyashisa ngokweqile.

Imbangela: Ukugcwala ngokweqile noma ukuthintana kahle.

Isixazululo: Nciphisa umthwalo noma qinisa amabhlogo wetheminali.

Viii. Imithetho Yokuphepha
Kumelwe ihambisane namazinga kazwelonke (afana ne-GB 7251.1-2013 “Low-voltage Switchgear Assemblies”).

Lapho ufaka futhi unakekela, amandla kufanele anqanyulwe futhi ukusebenza kufanele kwenziwe ngochwepheshe bakagesi.

Akuvunyelwe ukushintsha amasekhethi angaphakathi ngokuthanda kwakho noma ukususa amadivaysi okuvikela.