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Advanced diagnostic software for insulating fluid test data, including dissolved gas analysis, for high-voltage apparatus. Learn from our experts.

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Guide for Interpreting Dissolved Gases in Liquid-Filled Transformers

Delta-X Research has published a comprehensive guide to DGA interpretation — covering what DGA is, how to read reports critically, and how to make sound judgements about transformer risk. Available as a free PDF download.

Article Series

A multi-part series on key advancements in dissolved gas analysis.

January 2021

Advancements in Dissolved Gas Analysis: Risk Assessment

What modern statistics can say about transformer risk assessment once DGA interpretation has been improved.

November 2020

Advancements in Dissolved Gas Analysis: Data Quality

Data quality is essential for effective DGA. Trend evaluation and short-term change assessment require accurate, low-variability measurements.

September 2020

Advancements in Dissolved Gas Analysis: CO/CO2 Ratio

Detection of carbon oxide gases indicates paper insulation deterioration — here's how to interpret the CO/CO2 ratio.

July 2020

Advancements in Dissolved Gas Analysis: Investigating Failure Cases

Three case histories demonstrating how R-DGA catches problems that conventional methods miss.

Published research

The science behind R-DGA is published in peer-reviewed journals and presented at industry conferences. Explore our white papers for the technical underpinning of Transformer Oil Analyst.

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From the blog

Technical deep-dives and research updates from the Delta-X Research team.

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Delta-X Research at the IEEE Rural Electric Power Conference 2026

Sean Casey is representing Delta-X Research at the IEEE Rural Electric Power Conference, connecting with rural and municipal utility engineers on how Reliability-based DGA helps smaller utility operations manage transformer health analytics, identify early fault indicators, and prioritise fleet maintenance with limited internal resources.

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Kayla Whitesel Presents at Energy Technology Live 2026

Delta-X Research's Kayla Whitesel presented at Energy Technology Live / the Distributed Energy Show in the UK, explaining why Reliability-based DGA provides a more scientifically rigorous foundation for transformer maintenance decisions than conventional interpretation methods.

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Delta-X Research at PowerTest 2026 — NETA's Annual Conference

Kayla Whitesel attended PowerTest 2026, NETA's annual electrical testing conference, connecting with the electrical testing and power systems community on DGA methodology, transformer condition assessment, and how Reliability-based DGA fits within broader condition-based maintenance programmes.

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