Partial Discharge Monitoring of HV Transformers and Switchgears
- Electrical discharges that do not completely bridge the electrode.
- Cause deterioration and eventual failure of the insulation layer.
- As per IEEE statistics Partial discharge is cause of 85 % of faults in High voltage Equipment.
- Switchgear insulation is difficult to test during routine maintenance. Insulation failure can be devastating.
- Many failures of HV insulation are associated with Partial Discharges.
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