Partial discharge monitoring has become increasingly important in the past few years. Besides other parameters like gas in oil analysis, temperatures, vibrations, or load conditions, etc., the PD trending information completes a full set of monitoring data of a transformer in the field. A series of standard bushing adapter (BA) is available to connect the measurement system to the test tap of condenser bushings. Even special designs are available on request. Additionally, the standard setup using the bushing test tap could be extended with UHF drain valve sensors or embedded antennas in flanges. For continuous monitoring, an instrument such as the ICMmonitor can be considered. Acoustic sensors can be used to locate a PD fault more precisely.
