A wowononga derandi chida chamagetsi chomwe chimagwiritsidwa ntchito kwambiri pamabwalo a AC.Njira yogwiritsira ntchito nthawi zambiri imakhala ndi cholumikizira chosunthika, cholumikizira chosunthika komanso cholumikizira chokhazikika.Mu dera, chitsanzo chothandizira chikhoza kudula magetsi, kulumikiza magetsi ndi kuteteza zipangizo zamagetsi.Malinga ndi kapangidwe kake ndi mfundo yogwirira ntchito, imatha kugawidwasingle-gawo circuit breaker, magawo atatu oyendetsa dera ndiair circuit breaker.Circuit breaker, monga chipangizo chosokoneza pakati pa kayendetsedwe ka kayendetsedwe ka magetsi ndi magetsi, imakhala ndi gawo lofunikira mu gridi yamagetsi.Pamene dera zimachulukirachulukira, dera lalifupi ndi zolakwa zina, chitetezo cha magetsi panthawi yake adzadulidwa, kuti dera lotseguka kuteteza chitetezo chaumwini ndi katundu ndi zida zina zowonongeka.Choncho awowononga deraZomwe zimagwiritsidwa ntchito kwambiri mumagetsi zimatchedwanso "over-undervoltage protector" kapena "fuse".Imodzi mwa ntchito zofunika ndikuzimitsa magetsi pakakhala njira yayifupi.
Mfundo ya ntchito
Pamene AC panopa kudzera kukhudza dera wosweka, electromagnetic kukopeka, kuyendetsa zochita za limagwirira ntchito, kuti dera wosweka amasulidwe tripping, potero kudula dera.
Mwachizoloŵezi, chipangizo chochedwa chikhoza kuwonjezeredwa kuti dera lithe kutsekedwa pokhapokha ntchito yosinthira ikamalizidwa mkati mwa nthawi yotchulidwa.
Pamene njira yachidule imadutsa pamagetsi ozungulira, zitsulo zomwe zili pafupi ndi kukhudzana zimasungunuka ndikuchotsedwa ndi kumasulidwa kwa kutentha chifukwa cha mphamvu ya arc kinetic ndi kutentha kwakukulu komwe kumapangidwa ndi kusungunuka kwa kukhudzana, motero kumadula panopa.
Pamene chosinthira mphamvu chatsekedwa kapena dera lomwe limalumikizidwa nalo likulephera, woyendetsa dera amatha kuswa dera munthawi yochepa.
Malinga ndi structural mawonekedwe lagawidwa zokhazikika, mafoni ndi inaimitsidwa atatu.
Malinga ndi kumasulidwa akafuna lagawidwa Buku ndi magetsi mitundu iwiri.
Malinga ndi limagwirira ntchito akhoza kugawidwa mu lamba kufala ndipo palibe kufala lamba mitundu iwiri;
Gulu
(1)Zowononga kuzunguliraakhoza kugawidwa mu vacuum interrupter chamber (VHV), arc interrupter gate (AVR), vacuum release (VSD) ndi vacuum contactor malinga ndi sing'anga ya arc interrupter.
(2) Ophwanya dera amatha kugawidwa m'mitundu itatu: chowotcha chagawo chimodzi, chowotcha chagawo cha magawo atatu ndi chowotcha mpweya.
(3) Zowononga mpweya zimatha kugawidwa m'mitundu iwiri, AC ndi DC, malinga ndi ogwiritsa ntchito komanso malo osiyanasiyana ogwiritsira ntchito.
(4) Wowononga dera akhoza kuphatikizidwa ndi banki ya capacitor air, air inductor ndi zipangizo zina zamagetsi malinga ndi njira yopangira, ndipo angagwiritsidwe ntchito ngati chipangizo chamagetsi chotetezera.
(5) Amagawidwa kukhala mtundu wachitetezo chopitilira apo, mtundu wachitetezo chafupipafupi komanso mtundu wachitetezo chopitilira-pansi-voltage malinga ndi mawonekedwe awo achitetezo.
(6) Pali 100V mndandanda wanthawi zonse voteji ya mpweya ndi magiredi apano malinga ndi ma voliyumu awo oveteredwa komanso mayendedwe apano.
Specification parameter
Mtundu wa ophwanya dera ndi wofanana ndi wa zida zina zamagetsi, monga code yopangidwa ndi zilembo "P", "Y" ndi manambala a masiwichi ogawa, ndi code yopangidwa ndi chilembo "C" ndi manambala osinthira mipeni. , ndi zina, koma ntchito ndi mapangidwe awo mwachiwonekere ndi osiyana ndipo kawirikawiri sangagwiritsidwe ntchito pazifukwa wamba.Tengani ZF6 ndi ZF14 mwachitsanzo.
2) Voteji yovotera: imatanthawuza mtengo womwe woyendetsa dera amatha kunyamula pansi pa ma frequency ovotera (50Hz) ndi ma frequency ovotera (25Hz).
3) Zovoteledwa pakali pano: zimatanthawuza kuchuluka kwa ntchito komwe woyendetsa dera amatha kupirira pamikhalidwe yodziwika.
4. "Kuphwanya mphamvu" kumatanthawuza kuti wodutsa dera akhoza kulumikiza modalirika AC 50Hz kapena DC 1000V kapena pansi pazifukwa zovomerezeka, ndipo nthawi yopuma siyenera kupitirira 5ms.
5) Makhalidwe a machitidwe
Mfundo yosankha
1. Amagawidwa mu:
(1) Zowonongeka zagawo limodzi zimatanthawuza zomwe zimagwiritsidwa ntchito poteteza mabwalo, ma motors ndi zida zina zamagetsi.Wowononga dera ali ndi ubwino wogwiritsa ntchito nthawi zonse komanso zosavuta, koma zimafunika kudula magetsi panthawi yomwe mzere ndi galimoto zimadzaza kapena kufupikitsidwa kuti ngozi isakule.Choncho, woyendetsa dera ayenera kukwaniritsa zofunikira za kudula magetsi mkati mwa nthawi yotchulidwa, ndi nthawi yochepa yopuma, kusankha bwino ndi zina zotero.
(2) Mawu akuti "gawo lachitatu AC low-voltage circuit breaker" amatanthauza chowotcha chamagetsi chomwe chimagwiritsidwa ntchito poteteza magalimoto ndi mabwalo owongolera, omwe ali ndi ntchito yofananira ndi gawo limodzi, koma adawonjezera cholumikizira cholumikizira mawonekedwe amkati a chipangizo chamagetsi kuti akwaniritse zofunikira pakuteteza ma mota ndi mabwalo owongolera mumayendedwe a AC.Kuphatikiza apo, ilinso ndi overload relay, undervoltage relay ndi zero sequence current relay.
Nthawi yotumiza: Feb-17-2023