Kaddamar da ake zaba muhimmanci na karamin shaida?

1 Roli na Current Transformers
A yi amfani da current transformers don hauƙar da maɗaƙi mai sarrafa karamin kai tsaye da kuma haɗe masu sauki da masu tsohuwar gwamnati. Tushen mafi yawan current transformer wanda ake amfani da shi a cikin gwamnati ta shirya ne a kan tushen mafi yawa a cikin gwamnati mai tsayi, kuma tushen tsohon ya shirya ne a kan al'adun takaice da jihohi na inganci. Wannan ya ba shi da muhimmanci a kan tara karamin kai tsaye a cikin gwamnati mai tsayi, kuma ya jagoranci a kan rubucewa a cikin tushen tsohon gaba zuwa karamin kai mai yiwuwa, don haka za ta iya samar da ma'anoni na tara karamin kai da kuma inganci.

2 Zabiya na Current Transformers
2.1 Kategoriyoyi na Current Transformers
Current transformers zai iya haɗa duka irin kamar yadda ake haɗa kungiyoyi, kamar yadda ake nuna a Fafin 1.

2.2 Zabiya na Current Transformers
2.2.1 Zabiya na Tsari Masu Yawanci.

Karamin kai mai yiwuwa na current transformer yana daidaita zai iya zama karamin kai mai yiwuwa na tushen mafi yawa, ko kuma zai iya kasance karamin kai mai yiwuwa na tushen mafi yawa. Karamin kai mai yiwuwa na tushen mafi yawa ana daidaita zai iya zama karamin kai mai yiwuwa da ke fiye da karamin kai mai yiwuwa na tushen mafi yawa. Idan karamin kai mai yiwuwa na tushen mafi yawa ya fi ƙoƙarin ɗaya, za a iya karɓar da karamin kai mai yiwuwa na tushen mafi yawa don in ba da iyali a yi aiki.

Karamin kai mai yiwuwa mai tsarki ba zai iya ƙasance karamin kai mai yiwuwa mai makwabta na tushen mafi yawa, kuma karamin kai mai yiwuwa mai tsarki ba zai iya ƙasance karamin kai mai yiwuwa mai tsayi na tushen mafi yawa. Ya kamata a duba tushen bayanin, kuma karamin kai mai yiwuwa mai tsayi ana daidaita zai iya zama 2.5 karamin kai mai yiwuwa mai tsarki. Don in iya haɗa da tushen bayanin, za a iya zaba current transformer da duɗu karamin kai, ko kuma za a iya kawo girman tushen tsohon da suka haɗa da duɗu karamin kai.

2.2.2 Zabiya na Tsari Mai Tsoho

Don karamin kai mai yiwuwa na tushen tsohon current transformer, 1 A ana daidaita zai iya zama, kuma 5 A zai iya zama; a matsalolin ƙarin, 2 A zai iya zama. Don kungiyoyin P, PR, PX, da PXR, idan karamin kai mai yiwuwa na tushen tsohon 1 A, karamin kai mai yiwuwa na tushen tsohon ana daidaita zai iya ƙasance 15 VA; idan karamin kai mai yiwuwa na tushen tsohon 5 A, karamin kai mai yiwuwa na tushen tsohon ana daidaita zai iya ƙasance 50 VA.

Don kungiyoyin TPX, TPY, da TPZ na current transformers don inganci mai tsayi, don in ba da iyali a yi aiki, karamin kai mai yiwuwa na tushen tsohon ana daidaita zai iya zama 1 A, kuma karamin kai mai yiwuwa na tushen tsohon ana daidaita zai iya ƙasance 10 Ω. Idan karamin kai mai yiwuwa na tushen mafi yawa ya ƙare waɗanda suka ƙare da 10,000 A, karamin kai mai yiwuwa na tushen tsohon ya kamata zai iya zama 5 A, kuma karamin kai mai yiwuwa na tushen tsohon ba zai iya ƙasance 2 Ω.

Don current transformers na takarda, kungiyar daidaita zai iya zama 0.2; idan karamin kai na tushen mafi yawa ya ƙare, 0.2 S zai iya zama. Don current transformers na tara, kungiyar daidaita zai iya zama 0.5; idan karamin kai na tushen mafi yawa ya ƙare, 0.5 S zai iya zama.

2.2.3 Zabiya na Irin

Don kungiyar daidaita na current transformers na inganci, ana daidaita zai iya lalace karamin kai mai yiwuwa mai tsayi na tushen mafi yawa zuwa karamin kai mai yiwuwa na tushen mafi yawa na current transformer. Daga fadin, za a zaba ƙaramin da ba ƙasance wannan, kuma ana daidaita zai iya zama 15, 20, 25, ko 30.

Don tasiri na 10 kV, ana daidaita zai iya zaba current transformers na epoxy resin-cast dry-type.Don tasiri na 35 kV, ana daidaita zai iya zaba current transformers na epoxy resin-cast dry-type, synthetic thin-film insulated dry-type, ko oil-immersed. Idan karamin kai mai yiwuwa na tushen mafi yawa ya ƙare (3,000 A da ƙarin), oil-immersed inverted-type current transformers ya kamata zai iya zama.

Don tasiri na 66 kV da 110 kV, ana daidaita zai iya zaba current transformers na oil-immersed, synthetic thin-film insulated dry-type, ko SF₆ gas-insulated. Don tasiri na 220 kV, 330 kV, da 500 kV, ana daidaita zai iya zaba current transformers na oil-immersed ko SF₆ gas-insulated. Daga cikinsu, don tasiri na 330 kV da 500 kV, oil-immersed inverted-type current transformers ya kamata zai iya zama. Don gwamnatin karamin kai mai yiwuwa, photoelectric current transformers ana daidaita zai iya zama.