Kodi DC Circuit Breaker ndi chiyani?

Wowononga dera la DC amatanthawuza chowotcha chozungulira chomwe chimagwiritsidwa ntchito mumagetsi ogawa magetsi a DC, omwe amatha kuteteza zida zamagetsi zomwe zikuyenda pamagetsi a DC.Nthawi zambiri ndi yoyenera kupangira magetsi a solar photovoltaic ndi makina ogawa mphamvu, makina osungira mphamvu za batri, ndi makina opangira magetsi atsopano a DC.Slocable's solar DC circuit breakersZapangidwa kuti ziteteze zingwe zomwe zili pakati pa gulu lililonse la ma module a PV ndi ma inverters a PV kuchokera pakuchulukirachulukira komanso ma frequency afupi a DC, ndipo amayikidwa muzitsulo zachitetezo cha PV kumapeto kwa chingwe chilichonse cha ma module a PV.

Malo olowera magetsi a DC circuit breaker ndi dongosolo lachindunji.General DC circuit breaker ndi DC MCB (DC miniature circuit breaker), DC MCCB (DC molded case circuit breaker) ndi mtundu wa B RCD (chipangizo chotsalira chamakono).

DC Miniature Circuit Breaker (DC MCB)

DC miniature circuit breakers idapangidwa kuti ikhale yogwiritsa ntchito ma circuit DC kuti itetezere mopitilira muyeso komanso lalifupi pazida zamagetsi kapena zida zamagetsi.DC mini circuit breakers ili ndi maginito apadera omwe amakakamiza arc kulowa mu arc slot ndikuzimitsa arc munthawi yochepa kwambiri.

Dera la DC limatha kutsekedwa pa OFF pogwiritsira ntchito chotchinga ngati njira yotetezera kugwetsa inverter ya PV.Popeza kuti cholakwikacho chimatha kuyenderera mbali yosiyana ndi yomwe ikugwira ntchito, woyendetsa dera la DC amatha kuzindikira ndikuletsa kuyenda kwapawiri kulikonse.Mulimonsemo, kuchitapo kanthu mwachangu m'munda kumafunika kuchotsa cholakwikacho.

DC miniature circuit breakers imagwiritsidwa ntchito makamaka pamakina a DC monga mphamvu zatsopano, ma photovoltaic a solar ndi ma solar battery energy system.Mphamvu yamagetsi ya DC mini circuit breaker nthawi zambiri imakhala DC 12V-1500V.

DC MCB ndi AC MCB ali ndi ntchito yomweyo, kusiyana kwakukulu ndi magawo thupi la mankhwala.Kuphatikiza apo, zochitika zogwiritsira ntchito AC MCB ndi DC MCB ndizosiyana.

Wophwanyira dera la AC amalembedwa pamtundu wa LOAD ndi LINE, ndipo chizindikiro cha DC chophwanyira chimayikidwa pa chinthucho kuti ndi chabwino (+), zisonyezo zoyipa (-) ndi malangizo apano.

Kodi Ntchito ya DC Mini Circuit Breakers ndi Chiyani?

Mfundo zomwezo zachitetezo chamafuta ndi maginito monga zowononga ma AC zimagwira ntchito ku DC miniature breakers:

Kutetezedwa kwamafuta kumayendetsa chophwanyira cha DC mini pomwe magetsi akupitilira mtengo wake.Munjira iyi yodzitchinjiriza, ma bimetallic contacts amawonjezera kutentha ndikuyendetsa wophwanya dera.Chitetezo chamafuta chimagwira ntchito mwachangu chifukwa kutentha kochulukirapo kumapangidwa kuti kukulitse ndikutsegula kulumikizidwa kwamagetsi pomwe magetsi ali apamwamba kwambiri.Kutetezedwa kwamafuta amagetsi a DC kumalepheretsa mafunde ochulukirachulukira okwera pang'ono kuposa mafunde wamba.

Chitetezo cha maginito chimayendera ma DC MCBs pakakhala mafunde amphamvu, ndipo kuyankha kumakhala nthawi yomweyo.Monga momwe zimakhalira ndi ma AC circuit breakers, mphamvu yosweka ya ma circuit breakers a DC imayimira vuto lalikulu lomwe lingasokonezedwe.Kwa DC mini breaker, magetsi otsekedwa amakhala osasinthasintha, zomwe zikutanthauza kuti wodutsa dera ayenera kutsegulanso magetsi kuti asokoneze vuto.Kutetezedwa kwa maginito kwa DC miniature breakers imateteza kumitundu ingapo yaifupi ndi zolakwika kuposa zolemetsa.

Chifukwa chiyani DC Solar Circuit Breakers Ndi Yofunika Pama PV Systems?

Machitidwe a Photovoltaic ali ndi mwayi wokhala ndi mphamvu zowonjezera mphamvu zowonjezera mphamvu.Pulogalamu imodzi kapena zingapo za solar zitha kugwiritsidwa ntchito, kapena zitha kuphatikizidwa pogwiritsa ntchito ma inverters ndi zida zina zamagetsi ndi makina.Machitidwe a PV ayenera kusamalidwa bwino, ndipo vuto lililonse laling'ono likhoza kukula mofulumira kukhala vuto lalikulu la dongosolo lonse.

Chifukwa chake, ma solar circuit breakers a DC ndi gawo lofunikira pamakina a photovoltaic, ndipo chitetezo chamafuta chimatha kuthandizira pazomwe zikuchitika.Kutetezedwa kwa maginito mu ma solar circuit breaker a DC kumatha kuponda chowotcha cha solar pakakhala mafunde ambiri olakwika.Zowonongeka za DC zimatha kusokoneza mafunde olakwika ngakhale pazovuta kwambiri.Chitetezo cha maginito ndichofunika kwambiri pamagetsi a DC chifukwa chimateteza kumayendedwe afupiafupi ndi zolephera zina.

Photovoltaic circuit breakers ndi yofunika kwambiri mu solar PV panel systems.Dera la solar panel ndi gawo lamtengo wapatali la photovoltaic system.Chifukwa chake, ndikofunikira kuwateteza ndi chowotcha chozungulira cha solar PV.PV DC owononga dera amatetezanso mabwalo ndi ma board ozungulira.Itha kusintha ma radiation yadzuwa kukhala yachindunji kudzera pa mapanelo adzuwa, ndipo kukhazikitsa kwa photovoltaic kumafuna kugwiritsa ntchito ma PV circuit breakers.

Kwa magalimoto amagetsi, mabatire awo amatha kulipiritsa pogwiritsa ntchito malo opangira magetsi.Chifukwa chake makinawa amafunikira ma DC MCBs kuti apewe ngozi chifukwa onse amafunikira kugwiritsa ntchito magetsi oyendera dzuwa, ma solar ndi magalimoto amagetsi amagwirira ntchito limodzi, komanso safunikira kutembenuza magetsiwo kukhala alternating current, omwe amatha kuwongoleredwa mosavuta pogwiritsa ntchito DC circuit breaker system kuti ayankhe mwachangu.

Mtundu Wina wa DC Circuit Breaker - DC Molded Case Circuit Breaker (DC MCCB)

DC molded case circuit breakers ndi yabwino kusungirako mphamvu, mayendedwe ndi mabwalo amagetsi a DC.Zopangira ma molded case breakers zidapangidwa kuti zikwaniritse zofunikira kwambiri, pomwe zida zosiyanasiyana zimapezeka kuti zigwirizane ndi magawo osiyanasiyana amunda.Ma DC MCCB amasiku ano akulitsa ntchito kuti aphatikize ma photovoltais a solar, malo opangira magalimoto amagetsi, kusungirako mabatire ndi makina a UPS, komanso kugawa magetsi a DC ndi mafakitale.

DC MCCB ili ndi ntchito yofanana ndi ya AC MCCB, ndipo ili ndi ntchito zoteteza mochulukira komanso zazifupi pamakina amagetsi amakono.

Amagwiritsidwanso ntchito m'mabwalo oyendetsedwa ndi batri opanda maziko posunga zosunga zobwezeretsera mwadzidzidzi ndi mphamvu zosunga zobwezeretsera.Ikupezeka mpaka 150A, 750 VDC mpaka 2000A, 600 VDC.Kwa ophwanya madera a DC omwe amagwiritsidwa ntchito pamakina okhazikika a photovoltaic pakuyika kwa dzuwa, uinjiniya wamapulogalamu ndikuwunikanso zimatsimikizira kuti zofunikira zachitetezo zikukwaniritsidwa.

DC Molded Case Circuit Breaker ndi chipangizo chotetezera madera osungiramo mphamvu, mayendedwe ndi mabwalo amagetsi a DC.Atha kugwiritsidwa ntchito pamakina okhazikika kapena osasunthika, kukwaniritsa ma voltages apamwamba komanso kutsika kwamphamvu kwamagetsi a dzuwa.Slocable imapanga zophulika zamagetsi zamphamvu kwambiri za DC zomwe zimapereka magwiridwe antchito apamwamba ndikuthandizira kuti mtengo ukhale wotsika, zophwanya za Slocable's MCCB DC zimapereka mpaka 150-800A, 380V-800V DC ndikukwaniritsa miyezo yolimba.

Kusiyana Pakati pa AC ndi DC Circuit Breaker

Kusiyana kwakukulu pakati pa panopa ndi alternating panopa ndi kuti linanena bungwe voteji wa panopa mwachindunji ndi mosalekeza.Mosiyana ndi izi, kutulutsa kwamagetsi mumayendedwe apano kangapo pa sekondi iliyonse, ndipo siginecha yamagetsi amagetsi imasintha mtengo wake sekondi iliyonse.Arc breaker arc idzazimitsidwa pa 0 V ndipo dera lidzatetezedwa ku mphepo yamkuntho.Koma chizindikiro cha DC panopa sichimasinthasintha, chimagwira ntchito nthawi zonse, ndipo mtengo wamagetsi umasintha pokhapokha ngati maulendo akuyenda kapena dera likutsika pamtengo wina.

Kupanda kutero, dera la DC lipereka mtengo wokhazikika wamagetsi kwa sekondi imodzi pamphindi.Chifukwa chake, sizovomerezeka kugwiritsa ntchito chowotcha cha AC m'boma la DC popeza mulibe 0-volt m'boma la DC.

Chenjezo Mukamagula Ma Crcuit Breakers

Chifukwa njira zodzitchinjiriza za mafunde a AC ndi DC zili pafupifupi zofanana, zophulitsa madera zidapangidwa kuti zigwiritse ntchito zonse ziwiri.Komabe, ndikofunikira kuyang'ana kawiri kuti magetsi ndi magetsi ozungulira ndi amtundu womwewo wapano.Ngati muyika chophwanya dera lolakwika, kukhazikitsa sikudzatetezedwa mokwanira ndipo ngozi yamagetsi ikhoza kuchitika.

Mfundo ina yofunika kuiganizira ndi kuchuluka kwa zingwe zomwe zimalumikiza cholumikizira cha DC mini kupita ku zida zamagetsi zotetezedwa.Ngakhale mutakhazikitsa chowotcha cha DC molondola, zingwe zocheperako zimatha kutenthedwa, kusungunula zotsekemera zawo ndikupangitsa kulephera kwamagetsi.

Zowononga ma circuit za DC sizimagwiritsidwa ntchito ngati zowononga ma AC, koma ndizofunikira.Ma DC MCB ndiukadaulo watsopano, popeza zida zambiri zapakhomo zimagwiritsa ntchito magetsi osinthika.Zowononga magetsi a Solar DC zimagwira ntchito yofunika kwambiri pachitetezo chamagetsi pamakina otsika mtengo opulumutsa mphamvu monga magetsi a LED, ma solar a photovoltaic, ndi magalimoto amagetsi.Pamene matekinolojewa akufikira ogula ambiri, zowononga ma solar zizikhala ndi msika wokulirapo.Kumbali ina, ophwanya dera la DC ndiukadaulo wokhazikika komanso wodziwika bwino pazamalonda, ndipo amagwira ntchito yofunika kwambiri poteteza makina olondola kwambiri komanso kuwotcherera arc.

Dongosolo lamagetsi likafuna kugwiritsa ntchito chowotcha chozungulira pano, nthawi zambiri timalimbikitsidwa kuti tisunge mautumiki a akatswiri akatswiri ndi akatswiri kuti muwonetsetse kuti mutha kusankha ndikuyika chophwanyira chanzeru cha DC.