Transformer Oil Dielectric Strength Tester 1.Easy operation, high autoimmunization 2. ... , high precision testing.Small measurement, light weight, and convenient for outdoor operation.Technical parameterPower supply: AC220V±10%, 50HzOutput voltage: 80kV, 100kVCapacity ... : temperature:-20°C ~ 60°C, humidity: max relative humidity 75% Insulation Oil and transformer oil Dielectric Strength Tester