Switchgear
Partial Discharge activity inside metal clad high voltage plant induces small voltage impulses called Transient Earth Voltages on the surface of the metal panels. TEVs travel around the surface to the outside of the switchgear, where they can be picked up externally using the PD Detector.
Defects on the surface of high voltage insulators are prone to a phenomenon known as surface tracking. Tracking causes carbon deposits that build up over time, ultimately leading to flashover and insulation failure. The PD Detector is highly sensitive to the ultrasonic emissions produced by tracking and enable the onset to be detected before insulation failure.
Advantages of the PD Detector
- Rapidly survey the whole substation – detects MV and HV problems before they occur
- PRPD – Phase Resolved Partial Discharge (PRPD) can be displayed on the device or mobile app to help PD analysis
- Advanced Noise Separation – device detects PD in higher noise environments and automatically separate PD and Noise level, no more false positives
Add-on Sensors Option
- Ultrasonic Parabolic Dish
- Ultrasonic Flexi-probe
- Contact Acoustic
