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Blog

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From Time-Based to Condition-Based: The DGA-Driven Transformer Maintenance Revolution

August 11, 2026

For most of the 20th century, transformer maintenance followed a simple rule: open it up every N years, inspect, replace whatever looks worn, and hope […]

Online DGA Monitor TCO: 10-Year Cost Comparison of PAS, GC, NDIR, and FTIR

August 11, 2026

Choosing an online DGA monitor involves more than comparing purchase prices. The purchase price typically represents only 30-40% of the total 10-year cost of ownership. […]

Laser Photoacoustic Spectroscopy: The 4th Generation of DGA Monitoring Technology

August 11, 2026

Photoacoustic spectroscopy has passed through several distinct eras in the fifty years it has been applied to dissolved gas analysis, and the story is usually […]

Beyond the Duval Triangle: A Multi-Method DGA Diagnosis Workflow for Asset Managers

August 11, 2026

The Duval Triangle is the most widely used DGA interpretation method — but it is not the only one, and relying on a single diagnostic […]

IEC 60599 vs IEEE C57.104: Which DGA Standard Should Your Utility Use?

August 11, 2026

Two major international standards govern dissolved gas analysis interpretation: IEC 60599 (European/international) and IEEE C57.104 (North American). While both aim to achieve the same goal […]

DGA Monitoring for Offshore Wind: Challenges, Solutions, and ROI

August 11, 2026

Offshore wind farms represent the most demanding environment for transformer monitoring — and the highest-stakes application. A transformer failure on an offshore platform can mean […]

How Transformer Oil Decomposes: The Chemistry Behind DGA Gas Formation

August 11, 2026

Every power transformer contains thousands of liters of insulating oil. When this oil is subjected to thermal or electrical stress, it decomposes — releasing a […]

DGA Hydrogen Monitoring: Early Warning for Transformer Faults

August 9, 2026

Hydrogen is the first gas produced in most transformer faults. Learn how continuous DGA monitoring can detect incipient faults weeks before they become critical.

How to Select an Online DGA Monitor: A Practical Buyer’s Guide

August 9, 2026

Choosing the right online DGA monitor involves more than comparing datasheets. This guide walks through the key factors international buyers should consider — from sensor […]

What is Dissolved Gas Analysis? A Complete Guide to DGA

August 9, 2026

Dissolved Gas Analysis (DGA) is the most important diagnostic tool for power transformer condition assessment. When transformers experience electrical or thermal stress, mineral oil and […]

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PAS DGA

Precision dissolved gas analysis monitors for power transformers. Manufactured by Shenzhen Feso Automation Technology Co., Ltd, Shenzhen, China. International sales by VA Technology Co., Ltd, Hong Kong. ISO 9001 certified.

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