Acrel APD300-L Wired Partial Discharge Sensor

The APD300-L Wired Partial Discharge Sensor is an intelligent online monitoring device developed for the condition monitoring of medium-voltage switchgear. It integrates partial discharge detection, temperature monitoring, and humidity monitoring into a single compact unit, enabling continuous assessment of the insulation status and operating environment inside switchgear. By detecting early insulation defects before they develop into serious failures, the sensor helps improve power system reliability, reduce unplanned outages, and support predictive maintenance.