Transformer Tan Delta Test Set WUHAN PRIMARY TESTER TECH&SCIENCE CO., LTD. Base Info Model NO.:HYGSTrademark:HuayingTransport Package:Wooden CasesOrigin:China (Mainland)HS Code:903084900 Description Pre:Capacitance and Tan-Delta Tester/Insulation Power Factor Test Set Next:100kv Dielectric Oil Dielectric Strength Tester