Partial Discharge Tester is the stethoscope and physical examination instrument for high-voltage electrical equipment. It is mainly used to detect insulation defects inside transformers, GIS (Gas Insulated Switchgear), cables, switchgear, and other equipment.
Partial Discharge (PD) is an early sign of insulation deterioration. If not handled in time, it will eventually lead to insulation breakdown and equipment failure. The Partial Discharge Tester judges the health status of equipment by capturing weak electrical signals, ultrasonic waves, or electromagnetic waves generated during the discharge process.
Here is the core knowledge about this instrument that I have compiled for you:
