Insulators are an important part of any electrical system. They prevent electrical components from shorting out and causing electric shocks. Environmental elements can degrade it and affect its operating safety. Insulation of electrical apparatus should be periodically checked to avoid unexpected delays due to failure.
AC hipot testing is more preferred by most engineers to assess the condition of insulation. This is because DC hipot needs a higher test voltage and is prone to flash overs or corona discharges. One of the most popular testers out on the market is the Hipotronics 100HVT 100 kiloVolt AC high potential tester. This tester features an output voltage of 100 kiloVolts which makes it ideal for most high voltage applications. It has a three voltage and current meters with an accuracy of ± 2% full scale. It also has safety features like external interlock and quick response overload circuit breaker to protect you from harm. This hipot is suitable for testing vacuum interrupters, switch gears, hot sticks and other high voltage equipment.