Transformer-kani waa resin epoxy caseed leh qaab-dhismeed dhamaystiran iyo dahaar buuxa.Waxa loogu talagalay isticmaalka cabbiraadda korantada, tamarta elektarooniga ah iyo ilaalinta gudbinta ee nidaamka korantada oo leh inta jeer ee lagu qiimeeyay 50Hz - 60Hz iyo danab lagu qiimeeyay 3,6, 10 kV ama ka hooseeya. Cabbir yar, miisaan fudud ayaa lagu rakibi karaa meel kasta.