Shah Farhang Megger & Joseph Aguirre - Megger & Spark Testing

In this presentation, we will evaluate and compare Tan Delta (TD) and Partial Discharge (PD) testing methods, both of which are critical in assessing the condition and integrity of power shielded cables. Tan Delta testing is renowned for its ability to measure the overall health of insulation by detecting deteriorations in dielectric properties. In contrast, Partial Discharge testing excels in identifying localized defects and imminent failure points within the cable insulation. We will compare the practical applications of each method, explaining the advantages and disadvantages, and will provide clear expectations for each. By doing so, we aim to enhance the reliability of power cable systems and offer insights that could guide utilities and engineers in combining both methods to ensure the safe and efficient operation of power transmission systems.