October 10, 2023
“My Transfo – Oil and Transformer” has confirmed its position as the reference point in Europe for professional industry updates

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Sustainable solutions for life cycle management (LCM) of electrical transformers with insulating oils

TransfoClean® is the Sea Marconi brand that includes services, products and solutions to support owners of electrical transformers in all phases of their life cycle (LCM). Sea Marconi occupies a leading market position in the sector, with 3000 clients across 5 continents.We have offices in Italy, France, Spain, Argentina, and operate in other areas of the world through qualified partners.


Core business

  • Analysis and diagnosis of oils and transformers
  • On-site treatments of oils and transformers
  • Construction and sale of systems for of oil and transformer treatment


Analyses carried out every year


Transformers analysed every year


Transformers treated in in the last year

5.480.000 lt

Oil treated in the last year

+ 240.000

Diagnoses in our database

Solution Finder

Select a “pathology” in the critical issues list and find the “therapy” along with real cases of success

02. Solutions

03. Success Stories

How we work

Protection of the strategic machinery fleet

TransfoClean is based on the analogy between men-blood and transformer-oil.Similar to the way clinical diagnostics are performed, Sea Marconi monitors the state of health of transformers by analysing (and diagnosing) the oil inside them.


Latest news

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Featured products

DGA EXPERIENCE – Improve the performance of your lab

DGA Experience is a package of products, instrumentation, assistance, advanced training and specialist consultancy, designed for new laboratories or for those who intend to improve their performance by respecting the requirements of the standards

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Revolving table, samples preparation for DGA

The Revolving Table is a tool designed to improve the preparation steps for insulating oil samples destined for Dissolved Gas Analysis (DGA) with the gas chromatography technique in the head space. Developed and validated by Sea Marconi in 1999, the revolving table is currently being used successfully in many laboratories internationally for everyday work.

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Kit for on site PCB screening in oil

The insulating liquids and related systems are classified respectively as “PCB” and “systems containing PCBs”, when the total concentration of the PCBs (209 possible congeners), PCTs (polychlorinated triphenyls – 8557 possible congeners) and PCBTs (polychlorinated Benzyltoluene) exceeds the limits stated by national laws.

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SmartNosy RT – Health state monitoring of cast-Resin Transformers

SmartNosy RT (Resin Transformer) is the last innovation of Sea Marconi; SmartNosy RT is a Diagnostic and Prognostic service for monitoring the heath state of Resin Electrical Transformers.

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Kit to measure total corrosive sulphur on site

The SM-TCS Kit (Sea Marconi – Total Corrosive Sulphur) continues to be the only truly effective and reliable solution to know precisely how corrosive an insulating liquid is.

The need to develop a quantitative method arises from the fact that in many cases, by running the CCD Test (IEC 62535) of oxidized oils, the visual outcome easily leads to false positives creating undue alarm.

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Oil Sampling Kit for Hermetic Equipment

This kit can be used for oil sampling from hermetic transformers and electrical equipment.
The hydraulic couplings provided with this kit are also suitable for sampling of oil or free-gases from Buchholz relay.

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StabOx, high-precision lab equipment to support oxidation stability test

StabOx performs the accelerated aging of liquids under controlled conditions with great precision, the equipment fully complies with all the requirements of the reference standard (IEC 61125* ed. 2.0 2018-01) but starting from those it is able to offer much higher quality standards.

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TransfoClean is the brand that contains the line of core business products and services; these are solutions to support the management of the Life Cycle of electrical equipment with insulating fluids


My Transfo is the most important European conference on the management of transformer fleets and insulating oils. Since 2002 it is the most awaited event for professional updating and the exchange of experiences among professionals


BioEnPro is a synergy between different processes aimed at the production of bioenergy and products for Smart Communities in a totally self-sustainable way, at Zero Km, Zero waste, negative CO2


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