Transformer Testing & Maintenance

How to Improve Transformer Protection

Using symmetrical components for fault discrimination in differential protection BY IMRAN RIZVI, ABB Inc. Classical differential protection schemes are subject to ghost differential currents due…
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Latest Electrical Industry News

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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The Role of Thermal Imagining in Today’s Electrical Utilities Sector

In today’s society we are faced with many obstacles, one of these obstacles is the high cost of electricity around the world.  Electricity prices for…
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Transient Analysis of Power Transformers Using Finite Element Method

A transformer relies on electromagnetic induction through coils to transfer electric energy between two or more circuits. Varying current in the transformer’s primary winding creates…
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Navigating the Transformer Supply Crunch: Strategies for Utilities Amidst Global Shortages

The Growing Transformer Supply Crisis The global transformer supply chain is facing unprecedented challenges, with utilities worldwide struggling to procure essential equipment due to material…
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Transformer testing and failure analysis

Power Transformer Failures

Electric utilities maximize utilization of their assets, while maintaining reliability. Power transformers are typically reliable, but have been known to fail suddenly and/or prematurely. Transformer…
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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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Transformer Testing & Maintenance Articles

Renewable Insulation Liquids for Transformers

Renewable Insulation Liquids for Transformers

Turning electrical assets into green machines BY RONNY FRITSCHE & GEORG PUKEL, Siemens AG Transformers…
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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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Understanding Bushing Failure Modes and Monitoring for Optimal Transformer Health

Understanding Bushing Failure Modes and Monitoring for Optimal Transformer Health

Monitoring the health of bushings is vital for ensuring the reliability of transformers, especially in…
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RMS Energy Responds to the Changing Engineering Needs of Customers

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…
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Protection of Electrical Power Transformers

Protection of Electrical Power Transformers

INTRODUCTIONIn most large electrical systems, generators and power transformers are the two most expensive pieces…
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