Kodi mawaya ophwanyira dera amalumikizidwa bwanji?Kodi null line ndi kumanzere kapena kumanja?
Katswiri wamagetsi wamagetsi amalangiza mwiniwakeyo kuti akhazikitse zowononga madera kuti ateteze chitetezo chamagetsi apanyumba.Izi ndichifukwa choti wowononga dera amatha kupita kukadula magetsi pomwe chingwe chakunyumba chikulephera, motero kuchepetsa kutayika kwa ngozi.Koma kodi mukudziwa momwe wowononga dera amalumikizidwa?Kodi ilinso mzere wakumanzere wakumanja wakumanja?Onani zomwe wamagetsi akunena.
1. Kodi wowononga dera ndi chiyani?
Wowononga dera ndi chipangizo chosinthira chomwe chimatha kutseka, kunyamula ndi kuswa mphamvu yapano pansi pazikhalidwe zanthawi zonse, komanso kunyamula ndikuswa zomwe zikuchitika pansi pazikhalidwe zachilendo (kuphatikiza mikhalidwe yayifupi) mkati mwa nthawi yodziwika.Ndi mtundu wosinthira, koma wosiyana ndi chosinthira chomwe timagwiritsa ntchito nthawi zambiri, chowotcha dera chimakhala chodula mawotchi apamwamba kwambiri, pomwe kulephera kwa dongosolo lathu kumatha kudula mwachangu, kuti tipewe zovuta. chitukuko cha zinthu, kuteteza katundu wa anthu.Ndi chida chabwino chotetezera chitetezo.
Kugwiritsira ntchito owononga dera kumapangitsa moyo wathu kukhala womasuka, pang'onopang'ono m'miyoyo ya anthu, kutibweretsera moyo wotetezeka.
2. Kumanzere null, kumanja moto
Sindinadziwe tanthauzo lake nthawi yoyamba.Pang'onopang'ono, ndikamaphunzira zambiri, ndidazindikira kuti zomwe zimatchedwa "kumanzere, moto wakumanja" ndikungoyang'ana jack, jack kumanzere ndi mzere wopanda pake, jack kumanja ndi chingwe chamoto, ndizomwezo.
Soketi mu mawaya, sangasiyidwe null kumanja moto.Ma terminals ena amakonzedwa mozungulira, koma mukayang'ana nawo (kumbuyo kwa socket), amakhala mosiyana ndi sockets.Malo ena amakonzedwa motalika, osatchula kumanzere ndi kumanja.
Chifukwa chake, ndikofunikira kutsatirabe chizindikiro cha positi yolumikizira polumikiza mawaya.Ngati yalembedwa ndi L, chingwe chamoto chidzalumikizidwa.N imayimira null line.
3. Wiring udindo wa null line ndi null line
Kusintha kulikonse kotayikira kuyenera kulumikizidwa ku null line.Ngati palibe null line, ndi chifukwa cha kulumikizana kolakwika.Kutuluka kwapanyumba, malinga ndi kuchuluka kwa mitengo, kumatha kugawidwa m'mitundu iwiri: kutayikira kwa 1P ndi kutayikira kwa 2P.
Zosintha zonse zili ndi magawo awiri a ma terminal (imodzi mkati ndi imodzi imawerengedwa ngati seti imodzi).Mmodzi mwa magulu awiri a ma terminal omwe ali ndi kutayikira kwa 1P ali ndi chizindikiro cha N. Pamene mawaya, mizere yopanda kanthu iyenera kulumikizidwa ku gulu ili la ma terminal ndi gulu lina la mizere yamoto.Osasamala za kumanzere null kumanja moto.Kuwongolera kwa mzere wa null ndi mzere wamoto wosinthira sikukhazikika, ndipo dongosolo la ma terminals amitundu yosiyanasiyana ndi mitundu ndi yosiyana.Pamene mawaya, malo enieni a N terminal adzakhalapo.
Palibe chizindikiritso cha midadada iwiri ya kutayikira kwa 2P, zomwe zikutanthauza kuti titha kusankha ma waya mosasamala.Komabe, nthawi zambiri tikulimbikitsidwa kuti titchule mawaya a 1P omwe amadumphira m'bokosi logawa kuti muwonetsetse kuti mawaya amatsatana pakati pa ziwirizi.Chifukwa chake mzerewo udzakhala wowoneka bwino komanso wosavuta kukonza mtsogolo.
Ziribe kanthu kuti ndi mtundu wanji wakusintha kotayikira, musalumikize mzere wopanda pake ndi chosinthira.
4. Kodi wowononga dera ayenera kulumikizidwa bwanji?
Tiyeni titenge 2P wophwanya dera monga chitsanzo, yang'anani ndi wophwanya dera monga chithunzi chotsatirachi.
Ma terminals awiri apamwamba nthawi zambiri amakhala obwera ndipo apansi awiri amakhala otuluka.Popeza iyi ndi 2P circuit breaker, imatha kuwongolera kutsegula ndi kutseka kwa mabwalo awiri.Ngati pali likulu N mbali imodzi ya terminal, terminal iyi imalumikizidwa ndi zero mzere, ndipo ina imalumikizidwa ndi mzere wamoto.
M'malo mwake, zowononga madera monga zomwe zili pamwambapa nthawi zambiri zimakhala zamphamvu kwambiri (zamphamvu zomwe zimagwiritsidwa ntchito ndi nyumba).Kuti mukhale otetezeka, ophwanya ma 1P angapo adzawonjezedwa kumbuyo kwa dera.Ma circuit breakers amenewa nthawi zambiri amakhala ndi mphamvu zochepa.
Kwa wophwanyira dera wa 1P, ndi bwino kulumikiza waya wamoyo kuchokera ku 2P wophwanya dera.Zoonadi, kwa wodutsa dera la 2P, mukhoza kupitiriza kulumikiza mzere wamoto ndi mzere wopanda pake.Ngati palibe chizindikiro cha N pa wophwanya dera, nthawi zambiri amatsatiridwa ndi moto wakumanzere ndi null yakumanja.
5. Ngati wayawo watembenuzidwa, chimachitika ndi chiyani?
Gwirizanitsani mzere wolakwika wa null ndi mzere wamoto wa 2P circuit breaker ndi 2P leakage circuit breaker si vuto lalikulu.Chokhacho ndichoti sichikuwoneka chachidule, chosokoneza pakukonza chifukwa katswiri amayenera kupezanso mzere wopanda kanthu ndi mzere wamoto.
Ikalumikizidwa, cholumikizira cha 1P+N ndi 1P chophwanyira chiwongolero chimatha kungodula waya wamoto----mzere wolumikizidwa ku terminal yosadziwika.Ngati mzere wa null ndi mzere wamoto walumikizidwa molakwika, pamene wophwanyira dera achotsedwa, mzere wa null umachotsedwadi.Ngakhale kuti palibe magetsi m'derali, pali magetsi.Munthu akachikhudza, amagwidwa ndi magetsi.
Mzere wopanda pake wa 1P circuit breaker uli pa null discharge, kotero sikophweka kulumikiza molakwika.Zotsatira za kulumikiza kolakwika kwa 1P circuit breaker ndi zofanana ndi zomwe zimagwirizanitsa ndi null line ndi mzere wamoto wa 1P+N circuit breaker.
Nthawi yotumiza: Jun-28-2022