Ko nga rau amperes ki te neke atu i te 1000 amperes o te awhe kawenga, me pehea te whiriwhiri i te wehenga ara iahiko

Molded case circuit breakerska whakatauhia mai i te 10A ki te 1600A, atapare ara iahiko (ACB)ka whakatauhia mai i te 630A ki te 6300A.Tirohia te molded case circuit breaker mehau iahiko wehengakua whakatauhia te rohe inaki o naianei, i etahi wa kaore e mohio ki te whiriwhiri.

He torutoru nga maataapono i konei.

He punaha tohatoha tuatahi i roto i te punaha toha, kei a ia he kapiti whangai me te kowiri motuka.

Ko te mea whakamarumaru o te kaiwawao iahiko whangai ko te taura.I te wa ano, te kaikaitukino iahikome mohio te hononga ruruku tiaki ki te matua taumaikaitukino iahikoo te punaha tohatoha tuarua, na te kaikaitukino iahikome whai parenga S whakaroa iahiko poto.

Thermomagnetici whakarewahia te pouaka ara iahikoe rua noa nga waahanga whakamarumaru, ara, te taumaha te roa o te whakaroa roa L tawhā me te ara iahiko poto inamata I tawhā, e kore e pai mo te koropiko o te taura whangai roa, me te whakamahi i tehiko molded case circuit breakerme nga wahanga tiaki e toru.

Mo nga hikohiko motuka, whakamahia te waahi arai iahiko kotahi, ara, he whakamarumaru ara iahiko poto, kaore he arai iahiko whakamarumaru taumaha.Ka kitea, he rereke ano tenei i te tikangatakai iahiko take kirihou.

I tua atu, ki te mea he kaitahuri wehe i te putanga o te tohatoha tuatahi, na te mea he rite te naianei o te urupohu hurihanga ki te naianei poto-iahiko, ka taea te kowhiri i te naianei reiti o te kaiawhio kia rite ki te 1.6 nga wa o te waa whakatau te hurihanga i te wa e tatau ana.Mena he nui te kaha o te kaihurihuri wehe,hau iahiko wehengaka whakamahia pea.

Hei tauira, 250kVA 0.4kV ki 0.4kV taratahi transformer, impedance ngaohiko ko 6%, tona nāianei whakatau ko:

Ko te iahiko-poto:

Ka wehea e matou te iahiko-poto ki te 10 kia 600A, na reira ka whakamahia e matou te iahiko arahiko me te ia o te 630A i mua.

Heoi, ka whakaarohia e matou te roanga o te wa paanga o te tere tere o te tere, e hiahia ana matou ki te whakamahi i te whakaroa iahiko poto S tawhā ki te whakaroa, katahi ka 630A kaore i te pai te waahi o te wa i hangaia, ki te whakamahi i te 800A anga iahiko, te anga i te wa poto. roa atu.

I tua atu, i te wa e whakaarohia ana te taura o waho, he mea tika ki te tirotiro i te pumau o te waiariki o te taura, ka piki ake te uara o naianei o te waahi hiko.

Ka kitea, me whakaaro tatou he aha te ahua o te ara iahiko hei whiriwhiri.