Testing High Voltage Cable Without Ageing the Cable Itself
It has become possible to determine the status of a cable circuit after laying using diagnostic methods that allow emerging defects or assembly errors to be localized and repaired, without overstressing the cable circuit. But traditional site acceptance test using only an AC resonance test, without additional PD measurement, offers only a binary test result, i.e. ‘breakdown’ or ‘no breakdown’. Useful data to create a SMART maintenance strategy can therefore not be developed. This presentation offers practical case studies in the area of After Laying Testing with explanation of the advantages of partial discharge measurement on short as well as long cable circuits up to 30 km.