Virtual Best Practices Seminar - Day 2 - Partial Discharge for Insulation Condition Assessment скачать в хорошем качестве

Virtual Best Practices Seminar - Day 2 - Partial Discharge for Insulation Condition Assessment

Partial discharge (PD) activity in transformers is one of the first precursors to insulation deterioration or design related failures. These discharges can manifest in multiple ways causing physical and chemical changes, producing emissions that can be detected to determine if there is PD activity. One way to determine the presence of PD is the phase-resolved partial discharge (PRPD) pattern. The appearance of the PRPD patterns is determined by the type of defect together with the position and the materials involved. The measured signals are affected by reflections, cross-coupling, and attenuation effects on the travel path from origin to the measuring terminals. Proper analysis of the influence of the mentioned effects on the measured signals also adds valuable information about the PD origin. This leads to the fact that PD testing is a well-established diagnosis method for shop-floor testing and also part of the factory-acceptance tests for power transformers. On-site testing is also possible with proper noise reduction and signal conditioning. Please join us for this Virtual Best Practices Seminar to learn more about partial discharge theory, PD fault investigation, different testing methods and techniques, a few examples of PD tests performed in the factory and the field, and how Megger instruments can assist in performing these measurements safely and effectively. Click here to view our upcoming webinars: https://bit.ly/3oK5f6p