Instrument has been primarily designed to produce DC high voltage for High Voltage (Proof Testing) of High Voltage Cables up to 40 KV DC. The instrument is well protected & has zero volt interlock to safe guard sudden exposure of personals. It is continuously variable and produces 0-40 KV DC output, voltage & mA analog meter are provided to note the reading for high voltage applied & leakage current. Voltage & current level can be set by potentiometer on panel. Timer is also fitted to select the time duration of DC test.