Haum rau rwb thaiv tsev ntawm ntau yam tsis kam.Xws li xaim sib koom ua ke winding, rwb thaiv tsev puas tsuaj, rwb thaiv tsev tiv thaiv ntawm ntau lub cav thiab cov khoom siv hluav taws xob xws li transformers, motors, capacitors, voltage regulators.Nws tseem tuaj yeem siv rau kev sib txuas, kho, sib tshooj, kho, sib khi thiab tiv thaiv hauv cov txheej txheem kev lag luam.