Transformer ea hajoale (CT) ke sesebelisoa sa bohlokoa sa motlakase tsamaisong ea matla.E ikarabella bakeng sa ho itšehla thajana pakeng tsa litsamaiso tse phahameng le tse tlase tsa motlakase le phetoho ea matla a phahameng ho ea ho a tlase.Hore na mohala o nepahetse kapa che ke oa bohlokoa haholo ts'ebetsong e tloaelehileng ea ts'ireletso, tekanyo, metering le lisebelisoa tse ling tsa sistimi.Ha CT e ncha e kenngoa 'me thapo ea bobeli ea CT e kenngoa ts'ebetsong kapa e nkeloa sebaka, ho lekanya ho nepahala ha polarity ea CT e se e le mokhoa oa bohlokoa oa mosebetsi bakeng sa basebetsi ba ts'ireletso ea relay.E latelang, HV Hipot e tla hlahisa tekanyo ea polarity ea CT ka botlalo:
HV Hipot GDHG-201A transformer comprehensive CT/ PT character tester
1. Polarity ea CT ke efe?
Polarity ke matla a electromotive a susumetsoang ke coil e ka sehloohong le coil ea bobeli tlas'a ketso ea matla a khoheli a tšoanang a mokokotlo oa tšepe.Liphello tse peli tse fihlang boemong bo phahameng ka nako e le 'ngoe kapa qetello e nang le bokhoni bo tlaase ka nako e le' ngoe e bitsoa qetello e tšoanang ea polarity.
Seo ho thoeng ke polarity ea hajoale ea transformer (CT) e bolela kamano lipakeng tsa tataiso ea hajoale lipakeng tsa matsoelintsoeke a eona a mantlha le matsoelintsoeke a bobeli.Ho ea ka melao ea tsamaiso, qetello ea pele ea CT primary winding e tšoauoa e le P1, 'me qetellong ea mohatla e tšoauoa e le P2;ntlha ea hlooho ea matsoelintsoeke ea bobeli e tšoailoe joalo ka S1, 'me mohatla o tšoailoe joalo ka S2.Ho wiring, P1 le S1, P2 le S2 li bitsoa pheletso e tšoanang ea polarity.Ho nka hore I1 ea hona joale ea maqhubu a ka sehloohong a phallang ho tloha hloohong ea hlooho ea P1 'me a phalla ho tloha mohatleng oa P2, hona joale I2 e entsoeng ka lehlakoreng la bobeli e phalla ho tloha qetellong ea hlooho ea S1 ebe e phalla ho tloha mohatleng oa S2.Ka nako ena, matla a khoheli a hlahisoang mokokotlong oa tšepe Ka lehlakoreng le le leng, letšoao le joalo la CT polarity le bitsoa depolarization.Ho fapana le hoo, e bitsoa ho eketsa polarity.Li-transformer tse sebelisoang hangata, ntle le ha ho boletsoe ka tsela e 'ngoe, li sebelisa depolarization.
2. Ke hobane'ng ha u lekanya polarity ea CT?
Polarity ea transformer ea hona joale e tlameha ho lekoa pele le ka mor'a ho fana ka thepa le ho ntlafatsa.Ntle le moo, ha ts'ireletso e fapaneng e sebetsa, ts'ireletso ea tataiso ea matla e sa sebetse kapa mitha ea hora ea watt e khutlisoa, polarity ea CT le eona e tlameha ho hlahlojoa.Ke hobane haeba polarity ea transformer ea hona joale e hokahane ka phoso nakong ea wiring, ho tla hlaha likotsi tse latelang:
(1) Haeba transformer ea hajoale e sebelisoa potolohong ea ts'ireletso ea relay, e tla etsa hore sesebelisoa sa ts'ireletso ea relay se sebetse hantle kapa se hane ho sebetsa, 'me ka nako e ts'oanang, se tla ama ts'ebetso ea ts'ebetso le ts'ebetso ea kotsi ea sistimi ea matla, le esita le ho beha thepa le polokeho ea botho kotsing maemong a boima.
(2) Haeba transformer ea hona joale e sebelisoa potolohong ea tekanyo ea lisebelisoa, e tla etsa hore pontšo ea lisebelisoa le limithara tse sa tšoaneng le tekanyo ea matla a motlakase e fosahetse.
(3) Haeba transformer ea hona joale e nang le khokahano ea linaleli e sa phethoang e sebelisoa, haeba polarity ea karolo leha e le efe e khutlisetsoa morao, nako ea karolo e le 'ngoe (hangata e le karolo e bohareng) ea transformer ea hona joale e sa amaneng e tla ba makhetlo a mangata ho feta ea mekhahlelo e meng.
(4) Haeba transformer ea hona joale e nang le khokahano e sa phethoang ea linaleli e sebelisoa, haeba mekhahlelo e 'meli e khutlisetsoa morao, le hoja hona joale mekhahlelo e meraro ka lehlakoreng la bobeli e ntse e ka boloka ho leka-lekana, phapang ea angle angle le lehlakoreng le ka sehloohong le tsamaisanang le hona joale ke 180 °, kahoo seo se tla fetola metara.
Ka hona, ke mosebetsi oa bohlokoa haholo ho ahlola ka nepo hore na polarity ea transformer ea hona joale e nepahetse kapa che.
Nako ea poso: Dec-06-2022