PD occurs between electrodes without bridging them, caused by weak points in insulationor manufacturing defects. Under high electric field strength,repeated breakdown and extinction occurs.。It manifests as gas breakdown within insulation, partial breakdown of solid/liquid dielectricsor concentrated field at metal edges/corners. The discharge energy is minimal, so short-term existence doesn't affect equipment insulation strength.However, if PD persists under operating voltage,these weak discharges will causecumulative effectgradual deterioration of dielectric propertiesand enlarge local defects, eventually leading to complete insulation breakdown.By type: internal discharge in insulation material, surface dischargeand corona discharge。
Product Features 1. Detects early faults before other methods like infrared detection.
2. High sensitivity, capable of detecting weak signals as subtle as blinking.
3. Strong anti-interference capability, suitable for complex environments.
4. Portable device, easy to carry and simple to operate.
5. Long-distance probes or ultrasonic remote receivers can greatly extend detection range to over 30 meters, and up to 45 meters.
Note: The above information and Technical Parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
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