PE-HVTD-12/100 is a manually operated capacitance & tan-delta test system with inbuilt 12 kV AC power source measurement bridge and a reference SF6 gas filled standard capacitor. The compact design of the system uses the principle of three winding differential transformer on a high permeability mu-metal core to measure the capacitance & tan-delta of the object accurately. The system is provided with high voltage protection devices, and contained in a sturdy metallic housing with mu-metal lining which shields it from external electromagnetic & electrostatic influences. Built-in battery powered null indicator makes the system suitable for operation in workshop, factories, high voltage switch yards etc. It is suitable for both grounded as well as ungrounded objects.