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IntroductionPartial discharge (PD) is a localized dielectric breakdown in an insulating material. It is caused by a high electric field stress in a small area of the insulation. PD can occur in any type of medium and high voltage insulation, including cables, transformers, and switchgear. The occurrence of PD is usually an indicator of underlying … Read more

Introduction Transformers play a critical role in ensuring the smooth and reliable delivery of electricity. Due to their complex nature, periodic testing, monitoring and maintenance is required to sustain optimal performance. Transformer testing enables a comprehensive evaluation of key parameters, allowing for the identification of potential issues and implementation of necessary maintenance. In this article, … Read more

Introduction VLF (very low frequency) cable testing is a technique used to detect incipient defects in medium and high voltage cables. It involves applying a high voltage, low frequency AC signal to the cable and measuring several parameters to quantify its condition. The benefits of VLF cable testing include reduced risk of cable failure, prevention … Read more

Importance of Residual Life Analysis (RLA) Testing RLA, also known as Residual Life Assessment, is a critical process in the maintenance and operation of industrial equipment, including motors, generators, cables, transformers, and switchgear. The objective of RLA is to determine the remaining useful life of an asset and to take appropriate actions to ensure its … Read more