... welding strength, fine energizing performance, galvanic corrosion resistance and long service life,etc... Very Low Frequency AC Hipot Tester with Sine Wave Output ... addition, the product has features as follows:1. Data of current, voltage, wave form can be directly sampled at high ... voltage side, so the data is real and accurate.2. Overvoltage protection: If the output exceeds the set limit of voltage, ...