Transformer Testing & Maintenance

Advancements in Dissolved Gas Analysis: Investigating Failure Cases

IntroductionDissolved gas analysis (DGA) provides the early warning radar view of a transformer fleet with a non-intrusive screening process for early identification of problematic transformers.…
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Latest Electrical Industry News

SorbWeb&tade; Plus System

The SorbWeb™ Plus DRH4 Synergy

If you have oil-filled transformers, the law requires you to have a spill prevention plan in place, up to and including a secondary containment system…
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Harmonic Problems in Power Transformers

Preventing malfunction in power transformers BY ANDY SAGL, Megger Harmonics are another power quality phenomenon that can cause equipment to malfunction. Harmonics are a sinusoidal…
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hydrocarbon gas emission

Advancements in Dissolved Gas Analysis: Risk Assessment

In general, the purpose of periodic screening with DGA for power transformers is risk assessment. Is any transformer likely to fail in service? If so,…
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substation transformer

TRANSFORMER INRUSH

ABSTRACTHere we discuss the phenomenon of transformer inrush; what it is and its significance to transformer protection design. INTRODUCTIONA couple of years ago in this…
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power plant

RMS Energy Responds to the Changing Engineering Needs of Customers

Today’s electrical infrastructure in the United States might have been viewed as a work of science fiction when the first commercial power grid was conceived…
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Transformer Diagnostic Testing

Transformer diagnostic testing: standards to diagnose equipment with Sweep Frequency Response analysis BY VOLNEY NARANJO, Megger Sweep Frequency Response Analysis (SFRA) has become a powerful…
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magazine_may_june_2023_article_1

Case Study: Rapid Changes in Bushing Health

IntroductionContinuous online monitoring of bushings provides real-time information which can result in the early detection of a possible failure. Challenge: A Major AlarmA prominent U.S.…
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Transformer Testing & Maintenance Articles

Radiator Fin(s) Leak Repair

Radiator Fin(s) Leak Repair

Radiator fins are notorious for leaking at various locations. One of which is where the…
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Dielectric Voltage Testing – Standard Methods

Dielectric Voltage Testing – Standard Methods

There are two standard methods from ASTM International: D877, Standard Test Method for Dielectric Breakdown…
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Advancements in Dissolved Gas Analysis: Data Quality

Advancements in Dissolved Gas Analysis: Data Quality

IntroductionThere is more to DGA interpretation than comparing the latest gas concentrations to limits in…
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Leakers, What a Mess!

Leakers, What a Mess!

Electric Substation apparatus, transformers and circuit breakers, are the workhorses of the electric transmission grid.…
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Metal Enclosed Electrical Bus, The Lifeline to the Transformer, What You Should Know and Why It’s Important to Your Bottom Line

Metal Enclosed Electrical Bus, The Lifeline to the Transformer, What You Should Know and Why It’s Important to Your Bottom Line

Brief Summary:The purpose of this article is to educate power plant operators and maintenance personnel…
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