... ,100KV. WE ARE DIRECT MANAUFACTURE, PLS VISIT Automatic Breakdown Voltage Tester of Testing Insulation Oil is produced as per the newest ... as ASTM D1816, IEC156, ASTM D899, etc. which adopts industrial single plate integrated circuit, new-style I/O ports, with unique ... weight, and convenient for outdoor operation. Fully Automatic Oil Electrical Strength Tester