Partial discharge (PD) testing provides critical information about the quality of cable insulation and its impact on your critical facility. If your medium- and high-voltage cable system has voids, gaps, or other defects, it’s vulnerable to PD. Left unchecked, these small electrical sparks can erode the insulation, eventually leading to unplanned outages. PD testing for cables helps you prioritize your maintenance resources and repair or replace cables before this failure occurs.