Transformer Testing & Maintenance

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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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Latest Electrical Industry News

A New Approach to High Voltage Insulation System Testing

Speed is the driving force of successful fault prevention. Early detection of insulation deterioration is key for avoiding asset failure, associated unplanned outages, and physical…
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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 Transformer Oil Alternatives in Improving Safety and Environmental Sustainability

The Growing Need for Safer and Greener Transformer Oils Transformer oil plays a vital role in the operation and longevity of power transformers, providing insulation,…
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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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Grounding Transformers Explained

By R. W. Hurst, Editor Grounding transformers are used to provide a path to ground for unbalanced load current and for fault currents on systems…
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aging transformers

Power Utility Replaces Aging Transformers with Customized, Drop-in Units

As aging transformers at generation facilities near end-of-life cycles, a number of potentially dangerous events can come into play when it comes to aging transformers…
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Power Transformers Health Check

Power transformers are static electric machines used to step-up or step-down voltage in electric power applications. The capital cost of a power transformer in the…
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Transformer Testing & Maintenance Articles

Insulation Resistance Test

Insulation Resistance Test

Insulation Resistance (IR) test, often called Megger test, is more than 100 years old and…
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Designing A Safe & Reliable Transformer Maintenance Program

Designing A Safe & Reliable Transformer Maintenance Program

The critical importance of power to every aspect of our world cannot be over-exaggerated. It…
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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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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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MITIGATING TRANSFORMER FAILURES: ADVANCED MONITORING AND MAINTENANCE STRATEGIES

MITIGATING TRANSFORMER FAILURES: ADVANCED MONITORING AND MAINTENANCE STRATEGIES

Power transformers are critical assets in electrical transmission and distribution networks. Their failure can lead…
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