Hot Sales Portable Circuit Breaker Analyzer WUHAN PRIMARY TESTER TECH&SCIENCE CO., LTD. Base Info Model NO.:HYGK-307Temperature:-10~40°cHumidity:<80%Trademark:HuayingTransport Package:Wooden CasesOrigin:China (Mainland) Description Pre:100kv Dielectric Oil Dielectric Strength Tester Next:Insulating Oil Tangent Delta Tester