Kutaya circuit breakeramapangidwa makamaka ndi zero sequence current transformer, electronic component board, leakage release and circuit breaker with overload and short-circuit chitetezo.Gawo loteteza kutayikira kwa chotchinga chowotcha limapangidwa ndi zero sequence current transformer (sensor part), controller (gawo lolamulira) ndi ma elekitiromagineti kutulutsa (gawo lochita ndi kupha).Magawo onse ndi mizere ya zero ya dera lotetezedwa lalikulu limadutsa pachimake chachitsulo cha zero sequence current transformer kuti ipange mbali yoyamba ya zero sequence current transformer.Mfundo yogwirira ntchito ya leakage circuit breaker imatha kumveka ngati:leakage circuit breakersangateteze magawo awiri amagetsi omwe amalumikizana ndi magawo awiri nthawi imodzi.Zotsatirazi zikuwonetsedwa:
Pachithunzichi, l ndi koyilo yamagetsi yamagetsi, yomwe imatha kuyendetsa chosinthira cha mpeni K1 kuti chisalumikizidwe ngati chatha.Mlatho uliwonse mkono chikugwirizana mndandanda ndi awiri 1N4007 kusintha kupirira voteji.Makhalidwe otsutsa a R3 ndi R4 ndi aakulu kwambiri, kotero pamene K1 yatsekedwa, zomwe zikuyenda kupyolera mu L ndizochepa kwambiri, zomwe sizikwanira kuti kusintha K1 kutsegule.R3 ndi R4 ndi ma voltage equalizing resistors a thyristors T1 ndi T2, omwe amatha kuchepetsa voteji kupirira zofunikira za thyristors.K2 ndiye batani loyesa, lomwe limagwira ntchito yoyeserera kutayikira.Dinani batani loyesa K2 ndi K2 yolumikizidwa, yomwe ili yofanana ndi kutuluka kwa mzere wakunja wamoyo padziko lapansi.Mwanjira imeneyi, kuchuluka kwa vesi lamagetsi amagetsi a magawo atatu ndi mzere wa ziro womwe ukudutsa mu mphete ya maginito si ziro, ndipo pamakhala kutulutsa mphamvu kwamagetsi kumapeto onse awiri a ndi B a koyilo yozindikira pa mphete ya maginito. , zomwe nthawi yomweyo zimayambitsa kutulutsa kwa T2.Popeza C2 imayimbidwa ndi magetsi ena pasadakhale, T2 ikatsegulidwa, C2 idzatulutsa R6, R5 ndi T2 kuti ipange voteji pa R5 ndikuyambitsa T1 kuyatsa.T1 ndi T2 zitatsegulidwa, zomwe zikuyenda kudzera mu L zimawonjezeka kwambiri, kotero kuti ma elekitirodi amachita ndipo chosinthira pagalimoto K1 sichimalumikizidwa.Ntchito ya batani loyesa ndikuwunika ngati ntchito ya chipangizocho ilibe nthawi iliyonse.Mfundo ya electromagnet kanthu chifukwa cha kutayikira kwa magetsi pazida zamagetsi ndizofanana.R1 ndi varistor ya chitetezo cha overvoltage.Izi makamaka zimapanga ntchito yofunikira kwambiri yoteteza kutayikira mu mfundo yogwira ntchito ya chophwanya dera lotayirira.
Pomaliza, fotokozani mwachidule mfundo yogwirira ntchito ndi zina zomwe zimagwiritsidwa ntchito pagulu lanyumba lanyumba.Monga chipangizo chothandizira chitetezo chamagetsi,leakage circuit breakerwakhala akugwiritsidwa ntchito kwambiri ndipo wachita mbali yofunika.Malinga ndi kafukufuku wazachipatala, thupi la munthu likakhala ndi 50Hz alternating current ndipo mphamvu yamagetsi ndi 30mA kapena kucheperapo, imatha kupirira mphindi zingapo.Izi zimatanthawuza kutetezedwa kwa magetsi a anthu ndipo zimapereka maziko asayansi pakupanga ndi kusankha zipangizo zotetezera zowonongeka.Chifukwa chake, zowotcha zotayikira zimayikidwa munthambi yamagetsi pomwe zida zam'manja ndi zida m'malo onyowa zimapezeka.Ndi njira yothandiza kupewa kukhudzana mosalunjika komanso kugwedezeka kwamagetsi.Padziko lonse lapansi, zikuwonekeratu kuti "kupatula socket yamagetsi yamagetsi, mabwalo ena amagetsi azikhala ndi zida zoteteza kutayikira".Kutulutsa kwaposachedwa ndi 30mA ndipo nthawi yochitapo ndi 0.1s.Ndikuganiza kuti izi ndi zofunika kwambiri pa moyo wathu watsiku ndi tsiku ndipo tiyenera kuziganizira.
Schematic chithunzi cha ntchito mfundo ya kutayikira mtetezi wa magawo atatu magawo anayi mawaya magetsi dongosolo.TA ndiye thiransifoma yotsatizana zero, GF ndiye chosinthira chachikulu, ndipo TL ndiye chosinthira cha shunt cha switch yayikulu.
Pansi pa zomwe dera lotetezedwa limagwira ntchito nthawi zonse popanda kutayikira kapena kugwedezeka kwamagetsi, malinga ndi lamulo la Kirchhoff, kuchuluka kwa ma phasors omwe ali pagawo loyambirira la TA ndi ofanana ndi ziro, ndiye kuti, mwanjira iyi, mbali yachiwiri ya TA imachita. osapanga mphamvu yamagetsi yamagetsi, woteteza kutayikira sachitapo kanthu, ndipo makinawo amakhalabe ndi mphamvu yanthawi zonse.
Pamene kutayikira kumachitika m'dera lotetezedwa kapena wina agwidwa ndi magetsi, chifukwa cha kukhalapo kwa kutayikira, kuchuluka kwa gawo lililonse komwe kumadutsa mbali yoyamba ya TA sikufanananso ndi ziro, zomwe zimapangitsa kuti IK iwonongeke.
Kusintha kwa maginito kumawonekera pachimake.Pansi pa kusinthasintha kwa maginito, mphamvu ya electromotive imapangidwa mu koyilo kumbali yachiwiri ya TL.chizindikiro ichi chotuluka chimakonzedwa ndikufanizidwa kudzera mu ulalo wapakatikati.Ikafika pamtengo wokonzedweratu, koyilo ya TL ya shunt kutulutsidwa kwa switch yayikulu imalimbikitsidwa, chosinthira chachikulu GF chimayendetsedwa kuti chiziyenda chokha, ndipo dera lolakwika limadulidwa, kuti azindikire chitetezo.
Nthawi yotumiza: Oct-11-2022