Free
DGA Calculator
Interpret a gas sample.
Compare IEEE, IEC and Duval results, then explore how input uncertainty affects the Duval zone.
IEEE C57.104 · IEC 60599 · Duval
Seetalabs® engineering tools
Free tools for engineering decisions.
Start with the question in front of you. Explore transformer diagnostics, insulation, site conditions and CBAM with focused calculations and clearly stated limits.
12 free toolsNo account requiredRuns in your browser
All 12 tools were developed by Massimiliano Vurro, founder of Seetalabs®. Free to use in your browser, with no registration.
12 tools
Dissolved gas analysis
From a single sample to a fleet review.
Free · 5 transformers
Fleet DGA Triage
Decide what to review first.
Load laboratory results from CSV and compare up to five transformers, with the evidence behind each position.
CSV import · Up to 5 transformers
Free
Monitor vs Lab Check
Investigate conflicting readings.
Compare online and laboratory DGA by gas, including whether the difference changes the diagnostic result.
CIGRE TB 783 · DGA comparison
Free
OLTC DGA Check
Read the tap-changer sample.
Assess a mineral-oil tap-changer compartment using gas ratios, trends and Duval Triangle 2.
IEEE C57.139-2015 · Duval Triangle 2
Oil & paper insulation
Fluid condition, moisture and thermal ageing.
Free
Insulating Fluid Condition
Put oil results in context.
Compare measured properties with the selected fluid, equipment and standard. See which result sets the headline.
Mineral oil · Esters · Silicone
Free
Moisture & Loading
Examine the loading constraint.
Explore paper moisture, bubble inception and indicative emergency loading under stated operating assumptions.
IEC 60076-7 · IEEE C57.91-2011
Free
Paper Insulation Remaining Life
Separate ageing from life predictions.
Explore thermal ageing scenarios and estimate a DP range from furans. A furan result is not remaining life in years.
Thermal ageing · Furan-derived DP
Site & compliance
Climate, fire risk and PCB obligations.
Free
Site Climate & Loading
Check the conditions at your site.
Compare climate data with normal service conditions and explore the effects on ageing and summer loading.
NASA POWER · IEC 60076 · IPCC
Free
Ester Retrofill & Fire Risk
Review the fire-distance assumptions.
Examine residual mineral oil, fire point and the geometry used in IEC and FM separation-distance assessments.
IEC 61936-1 · FM Global DS 5-4
Free
PCB Compliance Triage
Screen an equipment inventory.
Review PCB classes, duties and deadlines under the selected jurisdiction. A result is not a legal authorisation.
Stockholm · EU · US profiles
CBAM
Two connected tools for importers and producers.
Free
CBAM Importer Calculator
Estimate your import obligations.
Check the mass threshold and estimate certificates, cost and deadlines from import lines and their emissions data.
EU importers · 10 interface languages
Free
CBAM Installation Emissions
Prepare the producer's emissions data.
Calculate product-specific embedded emissions and free allocation for installations outside the EU.
Non-EU producers · 14 interface languages
The producer's data can feed the importer's calculation.
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Calculations, with context.
Results support engineering review, not autonomous operating decisions or compliance certification. Check the method, edition, input quality and limits before acting.
Inputs stay in your browser. Site Climate & Loading sends the rounded site location to NASA POWER to retrieve weather data.
Need help with the next step?
Bring the sample, operating context or assessment question. We can discuss which evidence and methods are appropriate for your equipment.
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