Ukusetshenziswa kwe-ATSE-Automatic transfer switch kungaxazulula inkinga egqagqene yemigqa engathathi hlangothi

Iswishi yokudlulisa ezenzakalelayo(ATSE)ingaxazulula inkinga egqagqene yemigqa engathathi hlangothi.Ngakho-ke siqonde ukuthini ngokugqagqana komugqa ongathathi hlangothi?

Umfanekiso 1: Cabanga ukuthi i-voltage ye-Amandla e-DCUkunikezwa kungu-220V, futhi inani lokumelana lezinto ezintathu eziphikisana nomthwalo R ngu-10 Ohms.Ake sibale i-voltage kuyo yonke i-resistor yokulayisha i-Ra:

Ku-resistor Ra, sine:

Qaphela ukuthi kukhona imisinga emithathu egeleza ngo-Ra wokumelana, eyodwa yayo iphumaukunikezwa kwamandla kagesiI-Ea futhi ibuyela esigxotsheni esinegethivu sokuphakelwa kwamandla nge-LINE N. Ezinye ezimbili ziphuma ku-Ea futhi zibuyele kutheminali enegethivu nge-Eb noma i-Ec.Kodwa ngenxa yokuthi amandla e-electromotive emithombo emibili kule loop ayalingana futhi aphikisana, lamanje linguziro.
Enye into edinga ukunakwa okukhethekile ukuthi i-voltage endaweni ye-N ingu-0V.
Ake sibheke umfanekiso 2 futhi: u-N esithombeni uhlukana abe amaphuzu amabili, uN kanye no-N'.Iyini i-voltage ngaphesheya kwe-resistor Ra?Kulula ukusho ukuthi i-voltage yonkana ku-Ra ingu-0V.
Yiqiniso, isisekelo lapha siwukuthi: imingcele emithathu yokuhlinzeka amandla kumjikelezo ihambisana ngokuphelele, futhi imingcele yokumelana nayo ihambisana ngokuphelele, futhi ngisho nemingcele yocingo, okungukuthi ukumelana komugqa, nayo ihambisana ngokuphelele.
Emgqeni wangempela, le mingcele ngeke ifane ncamashi, ngakho-ke i-Ra izoba ne-voltage ephansi kakhulu.Masiyibize nge-N' voltage.

Ake sibheke isithombe esingezansi:

Njengoba singabona, ukunikezwa kwamandla ku-FIG.3 kanye no-4, FIG.1 kanye ne-FIG.2 ishintshiwe isuka ku-DC iye ku-AC yezigaba ezintathu, kanti i-voltage yesigaba ingu-220V, ngakho-ke i-voltage yomugqa ngokwemvelo ingu-380V, futhi umehluko wesigaba phakathi kwezigaba ezintathu yi-120 degrees.
Ithini i-voltage ngaphesheya kwe-resistor Ra emfanekisweni wesi-3?
Njengoba inhloso yalokhu okuthunyelwe kuwukukhombisa inkinga kuphela, hhayi ukwenza ukubala kobuningi besekethe.Ngeke kudingeke ukuba senze isibalo esiqondile.
Kodwa singakwazi ngempela lokho, ku-FIG.3, i-voltage yonkana kwi-resistor Ra nayo icishe ilingane no-217.8V kanye ne-interphase voltage inguziro.
Ku-FIG.4, siyabona ukuthi i-n-line igqekeza ku-N no-N', ngakho-ke kwenzekani ku-voltage endaweni engu-N'?
Impendulo iyafana ncamashi naku-DC.Uma isifunda silingana ngokuphelele, i-Un 'ilingana no-0V;Uma amapharamitha wesekethe engahambisani, i-Un 'ayilingani no-0V.
Kumjikelezo osebenzayo, ikakhulukazi kumjikelezo wokukhanyisa, i-AC yezigaba ezintathu ayi-asymmetric, ngakho-ke yamanje igeleza ngomugqa ongu-N noma umugqa we-PEN (umugqa we-zero).Uma ulayini ongu-N noma we-PEN unqamuka, i-voltage ngemuva kwephuzu lokuphumula iyakhuphuka.Ezimweni ezimbi kakhulu, ikhuphukela ku-voltage yesigaba, engu-220V.

Ake sibhekeI-ATSE:

Bona ngezansi:

Kulesi sithombe sibona ulayini ongenayo okabili, iI-ATSE, futhi yiqiniso ukukhanya komthwalo.Lapha, nokho, inani lezibani ezigabeni ezintathu liyahlukahluka, kanti isigaba A yisona esilayishwe kakhulu.
Ake sikucabange lokhoI-ATSEmanje ivala iluphu ye-T1 ngakwesobunxele, futhi ukusebenza kwamanje kusuka ku-T1 kuya ku-T2.
Uma, ngesikhathi sokuguqulwa, umugqa we-1N unqanyulwa kuqala futhi isigaba sesithathu sinqanyuliwe kamuva, khona-ke ngesikhathi sokuguqulwa, singakwazi ngokushesha ukwazi ulwazi olungenhla ukuthi i-voltage ye-neutral line yomthwalo ingakhuphuka noma yehle.Uma i-voltage esibani idlula i-voltage yesigaba kakhulu, isibani sizoshisa ngesikhathi senqubo yokuguqula.
Yilapho ukugqagqana kwemigqa engathathi hlangothi kungena khona.

Liyini ikhambi?

I-ATSEngokusebenza kokugqagqana komugqa ongathathi hlangothi, lapho ivulwa, qala ngokuqinisekisa ukuthi i-voltage yezigaba ezintathu ivulwa kuqala, bese kuthi umugqa ongu-N uvulwe ekugcineni;Uma ivuliwe, qala uqinisekise ukuthi uvule ulayini ongu-N, bese uvula i-voltage yezigaba ezintathu.Ngisho, i-ATSE ingadlula imigqa engu-N yazo zombili izindlela ngokushesha.Lona umsebenzi wokugqagqana komugqa omaphakathi.