Partial Discharge

Often, PD can be detected with the commissioning of the new device due to improper installation, low-quality design or artistry (this is explicitly observed in cable joints and terminations made-up on-site). Poor quality can cause ‘infant mortality’ of MV / HV networks with a disproportionate percentage of insulation failures being detected within the first 1-3 years of service compared to the rest of the service life of the cables/plant