What is Partial Discharge in an Oil Filled Transformer? How Does a UHF PD Sensor detect it?
UHF PD Sensor
A UHF PD (Ultra High Frequency Partial Discharge) sensor is a diagnostic device used in high voltage electrical equipment to detect partial discharges that is localized dielectric breakdowns that occur within insulation systems.
These discharges act as early warning signs of insulation deterioration and possible equipment failure.
Why Ultra High Frequency?
UHF sensors operate in the frequency range of 300 MHz to 3 GHz.
This frequency band is less susceptible to external electrical noise enabling accurate, non-intrusive and highly sensitive monitoring of partial discharge activity.