Labarai - Menene PT/CT?

PTAn fi sani da wutar lantarki a masana'antar wutar lantarki kuma CT shine sunan gama gari na na'ura mai canzawa a masana'antar wutar lantarki.

Voltage Transformer (PT): kayan aikin lantarki ne ke canza babban ƙarfin wutar lantarki zuwa wani ƙayyadaddun ƙarancin ƙarfin lantarki (100V ko 100/√ 3V).

Mai yuwuwar canjin (PT, VT) yayi kama da na'urar wuta, wanda ake amfani dashi don canza wutar lantarki akan layi.Duk da haka, dalilin da yasa transformer ke canza wutar lantarki shine watsa makamashin lantarki.Ƙarfin yana da girma sosai, gabaɗaya a cikin kilovolt ampere ko megavolt ampere azaman sashin lissafi.Dalilin da ya sa wutar lantarki ta canza wutar lantarki ana amfani da shi ne musamman don auna mita da samar da wutar lantarki ta na'urorin kariya na relay, auna wutar lantarki, wutar lantarki da wutar lantarki na layin, ko don kare kayan aiki masu mahimmanci a cikin layi lokacin da layin ya kasa. Taswirar wutar lantarki kadan ne, gabaɗaya kaɗan ne kawai amperes na volt, da yawa na ampere volt, kuma matsakaicin bai wuce ampere dubu ɗaya ba.

Transformer na yanzu (CT): kayan wutan lantarki ne ke canza halin yanzu a cikin babban tsarin wutar lantarki ko kuma babban na yanzu a cikin ƙaramin ƙarfin lantarki zuwa wani ƙayyadaddun ƙanƙan ƙarami (5a ko 1a).

Transformer na yanzu kayan aiki ne wanda ke canza babban halin yanzu a gefe na farko zuwa ƙarami a gefen sakandare bisa ka'idar shigar da wutar lantarki.Transfoman na yanzu ya ƙunshi rufaffiyar cibiya da iska.Juyin jujjuyawar sa na farko kaɗan ne, kuma an haɗa shi a jeri a cikin da'ira wanda ke buƙatar auna halin yanzu.Sabili da haka, sau da yawa yana da duk abubuwan da ke gudana ta hanyar layi, kuma jujjuyawar iska ta biyu sun fi yawa.An haɗa shi a jeri a cikin kayan aunawa da kewayen kariya.A lokacin da na'urar da ke aiki a halin yanzu, da'irar ta na biyu a koyaushe a rufe take, don haka impedance na jerin na'urar aunawa da da'irar kariya kadan ne, kuma yanayin aiki na na'urar ta atomatik yana kusa da gajeriyar kewayawa.Transformer na yanzu yana jujjuya babban halin yanzu a gefen farko zuwa ƙarami a gefen sakandare don aunawa, kuma ɓangaren na biyu ba zai iya buɗe kewaye ba.