Zithunzi zotentha ndi njira yosavuta yodziwira kusiyana kwa kutentha m'magawo amagetsi a magawo atatu, poyerekeza ndi momwe amagwirira ntchito.Poyang'ana kusiyana kwa kutentha kwa magawo onse atatu mbali ndi mbali, akatswiri amatha kuona mwamsanga kusokonezeka kwa kayendetsedwe kake pamiyendo chifukwa cha kusalinganika kapena kulemetsa.
Kusalinganika kwa magetsi nthawi zambiri kumachitika chifukwa cha kuchuluka kwa magawo osiyanasiyana koma kumatha kukhala chifukwa cha zovuta za zida monga kulumikiza mwamphamvu kwambiri.Kusalinganika kwakung'ono kwamagetsi operekedwa ku mota kumayambitsa kusalinganika kwakukulu komwe kungapangitse kutentha kwina ndikuchepetsa torque ndi mphamvu.Kusalinganika kwakukulu kumatha kuwomba fuse kapena kuyendetsa chowotcha chomwe chimayambitsa gawo limodzi ndi zovuta zomwe zimagwirizanitsidwa nazo monga kutentha kwagalimoto ndi kuwonongeka.
M'malo mwake, ndizosatheka kulinganiza bwino ma voltages mu magawo atatu.Pofuna kuthandiza ogwiritsa ntchito zida kudziwa milingo yovomerezeka, National Electrical
Opanga Manufacturers Association (NEMA) adalemba zofunikira pazida zosiyanasiyana.Zoyambira izi ndi mfundo yothandiza yofananira panthawi yokonza ndi kuthetsa mavuto.
fufuzani?
Jambulani zithunzi zotentha za mapanelo onse amagetsi ndi malo ena olumikizirana okwera kwambiri monga ma drive, ma disconnects, controls ndi zina zotero.Kumene mumapeza kutentha kwapamwamba, tsatirani dera lomwelo ndikuyang'ana nthambi ndi katundu.
Yang'anani mapanelo ndi zolumikizira zina zovundikira zozimitsa.Moyenera, muyenera kuyang'ana zida zamagetsi zikatenthedwa bwino komanso pamalo okhazikika ndi osachepera 40 peresenti ya katundu wamba.Mwanjira imeneyi, miyeso imatha kuyesedwa moyenera ndikuyerekeza ndi momwe zimagwirira ntchito.
Kuyang'ana chiyani?
Katundu wofanana uyenera kufanana ndi kutentha kofanana.Mumkhalidwe wolemedwa wosalinganika, magawo odzaza kwambiri adzawoneka otentha kuposa ena, chifukwa cha kutentha kopangidwa ndi kukana.Komabe, katundu wosalinganizika, wochulukirachulukira, kulumikizana koyipa, ndi vuto la harmonic zitha kupanga mawonekedwe ofanana.Kuyeza kuchuluka kwa magetsi kumafunika kuti mudziwe vuto.
Kuzungulira kozizira kwambiri kuposa nthawi zonse kapena mwendo ukhoza kuwonetsa chigawo chomwe chalephera.
Ndi njira yabwino yopangira njira yoyendera nthawi zonse yomwe imakhala ndi malumikizano onse ofunikira amagetsi.Pogwiritsa ntchito pulogalamu yomwe imabwera ndi chojambula chotenthetsera, sungani chithunzi chilichonse chomwe mumajambula pakompyuta ndikutsata miyeso yanu pakapita nthawi.Mwanjira imeneyo, mudzakhala ndi zithunzi zoyambira kuti mufananize ndi zithunzi zamtsogolo.Njirayi idzakuthandizani kudziwa ngati malo otentha kapena ozizira ndi achilendo.Pambuyo pokonza, zithunzi zatsopano zidzakuthandizani kudziwa ngati kukonzanso kunapambana.
Kodi “chenjezo lofiira” likuimira chiyani?
Kukonzanso kuyenera kukhala koyang'aniridwa ndi chitetezo choyamba - mwachitsanzo, zida zomwe zimayika chiwopsezo chachitetezo - motsatiridwa ndi kufunikira kwa zida ndi kuchuluka kwa kutentha.NETA (InterNational Electrical
Testing Association) malangizo akusonyeza kuti kutentha pang'ono monga 1 ° C pamwamba pa malo ozungulira ndi 1 ° C pamwamba kuposa zipangizo zofanana ndi katundu wofananawo kungasonyeze kuperewera komwe kungafune kufufuza.
Miyezo ya NEMA (NEMA MG1-12.45) imachenjeza motsutsana ndi kuyendetsa galimoto iliyonse pamagetsi osakwanira opitilira gawo limodzi mwa magawo zana.M'malo mwake, NEMA imalimbikitsa kuti ma mota achepedwe ngati akugwira ntchito mopanda malire.Maperesenti osakwanira otetezeka amasiyanasiyana pazida zina.
Kulephera kwa injini ndi chifukwa chofala cha kusalinganika kwamagetsi.Mtengo wonse umaphatikiza mtengo wa mota, ntchito yofunikira kusintha injini, mtengo wazinthu zomwe zimatayidwa chifukwa cha kupanga kosafanana, kugwiritsa ntchito mzere ndi ndalama zomwe zidatayika panthawi yomwe mzere watsika.
Zochita zotsatila
Pamene chithunzi chotenthetsera chikuwonetsa kuti kondakitala wathunthu ndi wofunda kuposa zigawo zina pagawo lonse la dera, kondakitala akhoza kukhala wocheperako kapena wolemedwa.Yang'anani mlingo wa kondakitala ndi katundu weniweni kuti mudziwe chomwe chiri.Gwiritsani ntchito ma multimeter okhala ndi chowonjezera chochepetsera, mita yochepetsera kapena chowunikira chamagetsi kuti muwone kuchuluka komwe kulipo komanso kutsitsa gawo lililonse.
Kumbali yamagetsi, yang'anani chitetezo ndi switchgear kuti madontho amagetsi agwe.Kawirikawiri, magetsi a mzere ayenera kukhala mkati mwa 10% ya chiwerengero cha nameplate.Kusalowerera ndale pansi kumatha kukhala chisonyezero cha momwe makina anu amanyamulira kwambiri kapena kungakhale chizindikiro cha harmonic panopa.Mphamvu yamagetsi yosalowerera m'nthaka yopitilira 3% yamagetsi odziwika iyenera kuyambitsa kufufuza kwina.Onaninso kuti katundu amasintha, ndipo gawo likhoza kutsika mwadzidzidzi ngati gawo lalikulu la gawo limodzi libwera pa intaneti.
Kutsika kwamagetsi pamafuse ndi ma switch amathanso kuwoneka ngati osakhazikika pagalimoto komanso kutentha kopitilira muyeso komwe kuli vuto.Musanaganize kuti chomwe chayambitsa chapezeka, yang'anani kawiri ndi chojambulira chotenthetsera ndi miyeso yaposachedwa ya mita kapena milingo ya clamp.Mabwalo odyetsa kapena nthambi siziyenera kukwezedwa mpaka pamlingo wovomerezeka.
Ma circuit load equations ayeneranso kulola ma harmonics.Njira yodziwika bwino yolemetsa ndikugawanso katundu pakati pa mabwalo, kapena kuyang'anira katundu akabwera panthawiyi.
Pogwiritsa ntchito mapulogalamu omwe amagwirizana nawo, vuto lililonse lomwe likuganiziridwa lomwe limawululidwa ndi wojambula wotentha likhoza kulembedwa mu lipoti lomwe limaphatikizapo chithunzi cha kutentha ndi chithunzi cha digito cha zipangizo.Ndiyo njira yabwino yolankhulirana ndi mavuto ndikupereka malingaliro okonza.
Nthawi yotumiza: Nov-16-2021