Online PD Testers Detect Electromagnetic Waves on Metal Enclosure Surfaces
The Online Partial Discharge Tester is the "all-weather health check doctor" for power equipment. Unlike offline testing that requires power outages, it can capture tiny discharge (partial discharge) signals inside insulation systems in real time while equipment is operating normally under energized conditions. It is one of the most core sensing-layer devices in current Condition-Based Maintenance (CBM) and intelligent operation and maintenance systems.
With the release of multiple new technologies from 2025 to 2026, current online PD testing has evolved from simple "alarming" to a new stage of "precise localization, intelligent diagnosis, and multi-modal fusion."
