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Looking for insight on electrical testing?
Join Megger’s expert Applications Engineers and Product Managers in our upcoming webinars:
Testing Tactics
Condition Assessment of
Medium Voltage Cables
Testing Tactics Cable Webinar:
Condition Assessment of Medium Voltage Cables
When:
10:00 a.m CT Friday, November 17
Attendees of this webinar are eligible to receive
1 NETA CTD and either 1 PDH or 0.1 CEU
This online seminar is an excellent opportunity for anyone interested in expanding their knowledge and skills in the field of medium voltage cable insulation assessment. The session will provide an in-depth exploration of the key challenges associated with assessing the condition of medium voltage cables, as well as the most effective strategies and tools for performing correct diagnostics. This presentation will cover a wide range of topics, starting with an overview of the distinct types of medium voltage cables and their unique characteristics. Attendees will also learn about the most common causes of cable degradation and failure, which include environmental factors such as temperature and humidity, as well as mechanical stress and insulation breakdown. One of the most important aspects of cable condition assessment is the use of diagnostic techniques to find potential cable failures before they occur.
Valuable insights into the latest advancements in predictive maintenance and the use of advanced analytics tools to check cable health and find potential issues will be presented. Attendees will also learn about the latest advancements in cable testing equipment and methods, which can be used to assess cable insulation resistance, partial discharge, and other key parameters. Interpreting test results and making informed decisions about cable maintenance and repair is another critical aspect of medium voltage cable condition assessment. The online seminar will provide attendees with best practices for interpreting test results and making informed decisions about cable maintenance and repair.
Whether you are a seasoned electrical engineer or a novice technician, this online seminar is an excellent opportunity to gain experience about the latest techniques and best practices for keeping your cables in top condition for best performance and safety.
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Advanced Transformer Diagnostics – SFRA, DFR
Testing Tactics Transformer Webinar:
Advanced Transformer Diagnostics – SFRA, DFR
When:
10:00 a.m CT Friday, December 8
Attendees of this webinar are eligible to receive
1 NETA CTD and either 1 PDH or 0.1 CEU
Power transformers are critical components of power systems that play a vital role in the distribution and transmission of electrical energy. The failure of a transformer can result in significant disruption to power supply and can be expensive to repair or replace. Therefore, the maintenance and testing of transformers are crucial to ensure their safe and reliable operation. Advanced transformer diagnostic techniques have been developed to provide more detailed information about the condition of transformers and troubleshoot beyond typical transformer field testing. This webinar will focus on two such techniques: Sweep Frequency Response Analysis (SFRA) and Dielectric Frequency Response (DFR).
The SFRA test is performed on a de-energized and demagnetized transformer and can detect a range of problems related to the core, winding, mechanical issues, such as internal faults, contact misalignment, and wear and tear. SFRA can detect changes in the frequency response of the transformer's complex network of resistance, inductance, capacitance, resulting from the overall winding geometry, core, and electrical connections. This also serves as a unique fingerprint of the transformer's mechanical structure. These changes can then be compared to previous baseline measurements to help field operators identify any internal movement and evaluate the mechanical integrity of the transformer system.
The DFR test is performed on a De-energized transformer and is the measurement of capacitance and losses over multiple frequencies. By analyzing the dielectric response, DFR can detect insulation deterioration and moisture ingress within the transformer. Moisture that accumulates in the insulating system of a power transformer affects it in many ways such as limiting the loading capability, lowering the dielectric strength of the oil, and aging the cellulose which results in a reduced transformer life. DFR is a highly sensitive technique that can detect potential issues before they become catastrophic failures.
The online seminar will provide an in-depth discussion on when, why, and how to perform the two tests. There will be best practice recommendations for each test and case studies will be presented over SFRA and DFR, along with an interpretation of the results. Together, these diagnostic techniques provide a comprehensive approach to transformer maintenance and testing, allowing for the early detection of faults and the implementation of appropriate maintenance strategies. The attendees to this online seminar will learn to utilize these advanced diagnostic techniques and how asset managers and technicians can gain valuable information about the condition of their transformers, identify potential issues before they lead to failures, and take proactive steps needed to maintain the reliability and safety of their power systems.