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A gas is up. Three guides disagree on what it means

The Seetalabs library explains how to read transformer evidence: dissolved gases, insulating fluids, paper ageing and loading. Each guide names the standard and the edition it relies on, and links the free tool that answers on your own data.

Start from your questionTwelve free tools

Start from your question

The standard that answers it, and the free tool that runs it on your data

Twelve questions. Each names its standard with the edition, the tool that answers in your browser, and the guide to read.

  1. Is there a fault, and does the diagnosis hold within laboratory error?IEC 60599:2022 · IEEE C57.104-2019DGA Calculator
    Duval Triangle explained Zone stability under uncertainty
  2. Which transformer should I look at first?IEEE C57.104-2019Fleet DGA Triage
    Triage from a laboratory CSV
  3. My online monitor and the laboratory disagreeCIGRE TB 783Monitor vs Lab Check
    When the difference matters
  4. Which tap changer gases are normal?IEEE C57.139-2015OLTC DGA Check
    Triangle 2 and the result code
  5. Is the oil fit for service?IEC 60422:2024 · IEEE C57.106-2015Insulating Fluid Condition
    Same sample, different verdicts
  6. How far can I load it with wet paper?IEEE C57.91-2011, Annex A · IEC 60076-7:2018Moisture and Loading
    Bubble inception and loading
  7. What can I say about the paper?IEC 60076-7:2018 · IEEE C57.140-2017Paper Insulation Remaining Life
    Ageing scenarios, never a date
  8. Is my site within normal service conditions?IEC 60076-1:2011Site Climate and Loading
    Ambient temperature and climate scenarios
  9. Do fire distances change if I refill with ester?IEC 61936-1:2021 · FM Global DS 5-4Ester Retrofill and Fire Risk
    Fire separation distances
  10. What are my PCB duties and deadlines?Stockholm Convention · EU law · 40 CFR 761PCB Compliance Triage
    PCB classes and deadlines
  11. What does CBAM mean for my imports or my plant?Regulation (EU) 2023/956CBAM ImporterCBAM Installation
    Importer costs and default values
  12. What is the overall condition of each transformer?CIGRE TB 761No free tool calculates it. RONIN does, for the whole fleet
    What a health index is

Start here

Nine guides to read first

  1. DGA and fault diagnosisDissolved gas analysis of power transformers

    The guide to the standards: what each gas means and which method reads it.

  2. DGA and fault diagnosisDuval Triangle explained

    How the zones are drawn, and when not to trust a point near a border.

  3. DGA and fault diagnosisNormal dissolved gas levels

    Why fixed limits are out of date, and what IEEE C57.104-2019 does instead.

  4. DGA and fault diagnosisA gas below the detection limit

    Why a method has to stop, and what a ratio is worth at 2 ppm.

  5. Health index and conditionWhat a transformer health index is

    CIGRE TB 761: a constructed ranking, not a measurement, and not a probability.

  6. Health index and conditionHealth index versus risk

    Condition, criticality and consequence are three different things.

  7. Oil, moisture and materialsFurans and the degree of polymerisation

    What 2-FAL can say about the paper, as an interval.

  8. Grid and regulationPCB compliance for transformers

    Duties and deadlines, and how an inventory is screened.

  9. Grid and regulationCBAM and power transformers

    What the carbon border rules mean for imports and lead times.

The guides and the free tools answer one question at a time. RONIN works on the whole fleet.

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