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Substation Testing & Maintenance


Leakers, What a Mess!

Electric Substation apparatus, transformers and circuit breakers, are the workhorses of the electric transmission grid. Our focus in this article is on the issue of dielectric media leaks. Specifically, oil in large power transformers and oil or SF6 gas in power circuit breakers. Oil and gas leaks...

Contact Material Recycling and Sustainability in Electronics

The electronics industry is experiencing rapid growth and innovation, with devices becoming more advanced and ubiquitous. As this industry continues to flourish, it’s crucial to consider the environmental impact of electronic manufacturing and the materials used in these devices. One area...

Electrical Substation Maintenance

Improving safety and methodology techniques to protect utility workers BY LARRY LAWRENCE, Lineman’s Testing Laboratories of Canada In 1990, many workplace safety hazards were consistently ignored as if they were “acceptable risk” and an expected part of a worker’s daily routine. Not...

Substation Testing & Maintenance

DGA graphs

Advancements in Dissolved Gas Analysis: Accounting for Gas Loss

Dissolved gas analysis (DGA) in transformers is a very successful periodic screening method to identify transformers that may be having problems. It is a symptom-based assessment of health, rather than a condition-based assessment. That is because the gases themselves do not cause failure, but are just by-products of deteriorating insulation caused by abnormalities such as
hot spots or electrical discharges. The abnormalities are what might fail the transformer. If the transformer loses fault gases, the...

Related Articles


Electrical Substation Maintenance

Improving safety and methodology techniques to protect utility workers BY LARRY LAWRENCE, Lineman’s Testing Laboratories of Canada In 1990, many workplace safety hazards were consistently ignored as if they were “acceptable risk” and an expected part of a worker’s daily routine. Not...

magazine_may_june_2023_article_2

Latest Power Outage Statistics and Causes Tracker

As the world’s technological landscape continues to grow and the demand for electricity increases, so too do the occurrences of power outages. Check out Critter Guard’s curated list where we track power outages statistics and data below or check out our power outages infographic. Power...

Condition Monitoring in an Age of Modernization How (and why) to Adapt

The widespread application and use of electricity, which may now seem like a simple commodity, is considered one of the greatest technical developments of all time. However, keeping up with today’s demand for power is anything but simple: a vast amount of resources goes into maintaining a...


FERC Complaint Targets Duke, PJM Transmission Planning

A coalition of large energy consumers and ratepayer advocates has filed a complaint with the Federal Energy Regulatory Commission (FERC), urging the agency to prohibit transmission owners from independently planning "local" transmission projects exceeding 100 kilovolts (kV). The coalition argues...

Contact Material Recycling and Sustainability in Electronics

The electronics industry is experiencing rapid growth and innovation, with devices becoming more advanced and ubiquitous. As this industry continues to flourish, it’s crucial to consider the environmental impact of electronic manufacturing and the materials used in these devices. One area...

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