Technical Insights

Expert perspectives on transformer diagnostics, oil analysis, and asset management from the TriboTech team.

Technical Guide

The sample that quietly ruins your diagnosis — the physics behind correct oil sampling

By Jesper Vinther · 11 min read

Five millilitres of headspace in a rigid, partly filled sample bottle strips 49 % of the hydrogen out of a transformer oil sample by Henry-Ostwald partitioning. Why correct sampling is a measurement, not a packaging detail — and where consulting judgment refines the standard's conservative numbers in the field.

April 26, 2026

11 min read

DGAoil samplingIEC 60475

Technical Guide

Interfacial Tension: The Most Underrated Test in Your Transformer Oil Programme

By Jesper Vinther · 18 min read

Why IFT deserves routine status — and what the 2024/2025 IEC updates change for mineral oil, ester, and GTL diagnostics. A deep technical guide covering measurement methods, standards evolution, and practical maintenance implications.

March 5, 2026

18 min read

Interfacial TensionIFTIEC 60422

Technical Whitepaper

Transformer Oils: Chemistry, Performance and the Economics of Sustainable Alternatives

By Jesper Vinther · 50 min read

A comprehensive technical whitepaper on transformer oil chemistry, refining processes, international standards, degradation mechanisms, and the green transition toward ester-based insulating fluids.

March 3, 2026

50 min read

Transformer OilWhitepaperOil Chemistry

Technical Whitepaper

Technical Whitepaper: Corrosive Sulfur in Transformer Oil

By Jesper Vinther · 45 min read

How a well-intentioned refining improvement became the power industry's most expensive lesson in oil chemistry. A practitioner's guide to detection, risk assessment, and mitigation.

March 2, 2026

45 min read

Corrosive SulfurDBDSWhitepaper

Technical Guide

Rethinking 'End-of-Life': Is a Low DP Score Really a Death Sentence for Your Transformer?

By Jesper Vinther · 15 min read

New CIGRE research challenges decades-old assumptions about transformer paper insulation aging. Learn why a DP value of 200 may not be the death sentence you think it is.

December 3, 2025

15 min read

DPcellulose insulationtransformer aging

Technical Guide

Navigating the DGA Maze: A Practical Comparison of IEC, IEEE, and CIGRE Standards

By Jesper Vinther · 13 min read

Learn how to integrate IEC 60599, IEEE C57.104, and CIGRE TB 771 into a unified DGA interpretation workflow. Master the triage, quick check, and deep diagnosis methodology used by senior diagnosticians.

December 2, 2025

13 min read

DGA interpretationIEC 60599IEEE C57.104

Technical Guide

What Your Transformer Oil Is Trying to Tell You

By Jesper Vinther · 10 min read

A practical introduction to insulating liquid analysis for asset managers and engineers. Learn how DGA, water content, acidity, dielectric strength, DDF, and interfacial tension reveal your transformer's health.

December 2, 2025

10 min read

oil analysisDGAtransformer diagnostics

Try Our Diagnostic Tools

Put theory into practice with our interactive Duval calculators or try our new unified workflow tool.

Unified Workflow Duval Triangle Duval Pentagon

Technical Insights

Expert perspectives on transformer diagnostics, oil analysis, and asset management from the TriboTech team.

Technical Guide

The sample that quietly ruins your diagnosis — the physics behind correct oil sampling

By Jesper Vinther · 11 min read

April 26, 2026

11 min read

DGAoil samplingIEC 60475

Technical Guide

Interfacial Tension: The Most Underrated Test in Your Transformer Oil Programme

By Jesper Vinther · 18 min read

March 5, 2026

18 min read

Interfacial TensionIFTIEC 60422

Technical Whitepaper

Transformer Oils: Chemistry, Performance and the Economics of Sustainable Alternatives

By Jesper Vinther · 50 min read

A comprehensive technical whitepaper on transformer oil chemistry, refining processes, international standards, degradation mechanisms, and the green transition toward ester-based insulating fluids.

March 3, 2026

50 min read

Transformer OilWhitepaperOil Chemistry

Technical Whitepaper

Technical Whitepaper: Corrosive Sulfur in Transformer Oil

By Jesper Vinther · 45 min read

How a well-intentioned refining improvement became the power industry's most expensive lesson in oil chemistry. A practitioner's guide to detection, risk assessment, and mitigation.

March 2, 2026

45 min read

Corrosive SulfurDBDSWhitepaper

Technical Guide

Rethinking 'End-of-Life': Is a Low DP Score Really a Death Sentence for Your Transformer?

By Jesper Vinther · 15 min read

New CIGRE research challenges decades-old assumptions about transformer paper insulation aging. Learn why a DP value of 200 may not be the death sentence you think it is.

December 3, 2025

15 min read

DPcellulose insulationtransformer aging

Technical Guide

Navigating the DGA Maze: A Practical Comparison of IEC, IEEE, and CIGRE Standards

By Jesper Vinther · 13 min read

December 2, 2025

13 min read

DGA interpretationIEC 60599IEEE C57.104

Technical Guide

What Your Transformer Oil Is Trying to Tell You

By Jesper Vinther · 10 min read

December 2, 2025

10 min read

oil analysisDGAtransformer diagnostics

Try Our Diagnostic Tools

Put theory into practice with our interactive Duval calculators or try our new unified workflow tool.

Unified Workflow Duval Triangle Duval Pentagon