three-part Webinar Series:
Don’t let my Transformer Die!
A three-part NETA Live Webinar Series focused on improved diagnostic testing to ensure the reliable, safe operation, and life extension of Power Transformers.
Featuring: Drew Welton, VP of Business & Technical Development
Sponsored by intellirent
Don't wait! Register TODAY!
The first 35 participants to register for all three webinar sessions receive a 10oz YETI coffee mug, compliments of intellirent!
Part 1: THURSDAY, September 25th, 2:00 PM ET
Avoiding Premature Insulation Failure of Oil-Filled Transformers by Proper Moisture Management (1hour)
Excessive moisture within the oil and insulating materials of a transformer has a significant effect on the life cycle of these critical and expensive assets.
Moisture is one of the most influential elements that can accelerate ageing in oil, paper, and pressboard insulation, possibly resulting in severe damage and premature failure.
In this session we will discuss how moisture accumulates, how it effects the aging process, and how significant damage or failure from excessive moisture can occur.
We will look at ways to determine the amount of moisture that is present, including the challenges associated with using traditional dissolved gas analysis, (DGA), or oil screens for moisture determination.
We will explore more modern techniques such a dielectric frequency response, (DFR).
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Part 2: THURSDAY, October 9th, 2:00 PM ET
Mechanical Failure Prevention and Detection of Transformers, Through Fault Monitoring (1 hour)
One of the more common causes of mechanical failure in power transformers comes from exposure to through faults. Most of today’s transformer protective relay systems provide comprehensive monitoring of these potentially damaging events but are rarely activated.
In this paper we will define the characteristics of a through-fault, investigate various proper settings for a through-fault monitor, and present an actual case study of a severely damaged transformer exposed to this condition. We will also see examples of detecting mechanical failure in the transformer as it relates to a through-fault condition. In addition, we will have a brief discussion on Frequency Response of Stray Losses as an additional test that can be performed alongside Leakage Reactance.
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Part 3: THURSDAY, November 20th, 2:00 PM ET
Better Prediction of Possible Bushing Failure (1 hour)
Transformer bushings are one of the most critical components of a transformer. Today, up to 22 % of major failures on high voltage transformers can be tracked back to bushings. Almost half of these failures result in catastrophic failures like explosions, fires or oil spills.
The cost of these damages and the lost opportunity to deliver energy could be several hundred times higher than the price of a bushing. Even a failing bushing which will not lead to a catastrophic failure can harm people due to exploding porcelain insulators and broken fragments that can be catapulted through the air by the force of the breakdown arc. The safety implications of this are tremendous. This session will discuss the most up to date methods to help determine the correct time to replace a bushing.
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