LIVE HV provides off-line commissioning, testing, maintenance and fault location for cables up to 220 kV including Partial Discharge (PD) and Tan Delta (TD) measurements.
When VLF cable testing is combined with diagnostic Partial Discharge (PD) and Tan Delta (TD) measurements we gain a far greater insight into the cable condition and can detect cable failure modes. PD testing is the best tool for detecting localised faults such as poorly terminated joints or terminations. TD testing which measures if there is any resistive component to the insulation provides us with overall health or condition of the cable insulation. Combined, PD and TD testing provides the ultimate in cable condition assessment.
LIVE HV’s specialised cable fault location techniques have been developed to accurately locate cable faults while not placing any stress on the cable. Our cable fault location techniques do not require a ‘thumper’ to be used and can accurately pre-locate and pinpoint both sheath to earth and core to screen faults for LV and HV cables. Successful techniques have been developed from years of Partial Discharge testing and include a combination of HV bridge, arc reflection and electromagnetic wave detection.