COMEM Group
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About us
COMEM Group provides world-class consulting services, product solutions, and after-sales support during the entire transformer lifecycle for transformer manufacturers, service organizations and end-users.
Our manufacturing units are in Italy, China, Germany, and Brazil.
We manufacture a wide range of components and bushings for power and distribution transformers. We provide also fiber optic systems for precise and reliable temperature measurement. Our products are designed to be compatible with many technical standards, and different transformer brands and are interchangeable with equivalent models of third-party manufacturers.
Local support is guaranteed worldwide through an extensive network of agents and distributors called Authorized Partners.
We can also support our customers with an on-site transformer service from general maintenance and testing to digitalization of your transformer.
Some key products & solutions:
MeDICA
Transformers are complex but not perfect machines designed to last for approximately 30 – 40 years, with some examples which have been in service for more than 50 years.
Similar to a human body, proactive healthcare is fundamental to improve transformer life quality and increase the lifespan significantly while simultaneously lowering the total cost of ownership.
By integrating and interpreting data from online monitoring and offline testing we can build together a sustainable maintenance strategy and guarantee longer life for your transformer.
MeDICA, an open and agnostic Monitoring Ecosystem for transformer diagnostics, provides a complete solution that includes products and services that can enable a longer and more efficient transformer life cycle.
By identifying and preventing premature transformer failures through monitoring, you can ensure business continuity and significantly reduce operational costs.
MeDICA helps you with:
- Gathering relevant transformer health data
- Building a suitable maintenance strategy
- Prolonging asset life & lowering the total cost of ownership
More info: https://comem.com/medica/
Self-dehydrating breathers
Moisture is a leading cause of transformer aging and outages. By choosing our condition-based self-dehydrating breather, type eSDB, for your transformer, you do not need to worry about site inspections and silica gel replacement. Your transformer will be continuously secured from moisture intake, and you can collect data online required for your transformer health management remotely.
The breather is equipped with a digital interface for easy connection to smart grid applications and can be integrated into a system through a central control unit.
It is compatible with our complete eDevice family, can be connected also to third-party devices, and be part of our modular monitoring ecosystem for transformer diagnostics – MeDICA.
- The presence of a double tank in all models guarantees uninterrupted continuous automatic silica gel regeneration
- Condition-based regeneration cycle secures longer lifetime and good dehydrating performance of the breather
- Robust and compact design with no external wires for easy installation and maintenance
- Possibility to remote the control signals through common communications protocols
- USB port for direct data downloading and uploading on-site
- Temperature, humidity, and silica gel status continuously monitoring
More info: https://comem.com/en/products/self-dehydrating-breathers-for-smart-transformers-type-esdb/
Oil diagnostic devices for smart transformers
Transformer oil’s primary functions are to insulate & cool a transformer. The oil must be stable at high temperatures and has excellent electrical insulation properties to withstand electrical & mechanical stress and ensure the safe operation of the transformer. To make sure the oil is suitable for use, the end-user must periodically control its properties. The presence of dissolved gases and moisture is an indicator of an abnormal condition and further investigation is needed to determine the next course of action.
As part of our MeDICA solution, it can also serve as a bridge to all other connected eDevices.
- Data aggregator & storage for eDevices and third-party devices
- Web interface for remote control in accordance with a cybersecurity assessment
- USB port for direct data downloading and uploading on-site
- Plug & play installation
- Oil drain valves for easy & safe oil sampling and discharging on-site
- Continuous testing on fresh oil samples
More info: https://comem.com/en/products/oil-diagnostics-devices-form-smart-transformers-type-edoc/
Fiber optic temperature measurement systems
Whether you are managing asset health remotely or on-site, our fiber optic temperature measurement system provides high-precise and fast data abou the direct winding hot spot temperature.
Utilizing fiber optics for temperature monitoring allows continuous and accurate proactive measures to prevent supply compromise.
System highlights at a glance:
- Exact direct winding temperature measurement
- Fast, repeatable, and reproducible measurements
- Hot-spot thermal modeling
- Turnkey & customizable solution
- Immune to electromagnetic, and radio-frequency interferences
- Immune to microwave radiation
- Empowering operational condition assessment, load planning & asset health management
Transformer safety:
- Predictive maintenance approach
- Premature failures prevention
- Effective loading management
- Transformer lifecycle extension
Serviceability:
- Easy installation and easy usage
- Long term reliability
- Real-time readings
- High accuracy of ±1K
- Rapid sampling rate per channel
Remote monitoring and control:
- Remote control through standard communication protocols
- Compatible with MeDICA or third-party monitoring systems
Data aggregator
For cost-effective predictive maintenance, it is essential to continuously integrate data about the asset health. Data aggregation dramatically reduces time to query large sets of data coming from several measurements and multiple sources.
eDAC, our latest data aggregator, is a device designed to collect and process data from multiple sources, without complicating the data flow too much. It represents the data in a unified and simple view of what is happening inside the transformer.
As part of our MeDICA ecosystem, it can collect data remotely from various sensors installed on the transformer, including COMEM eDevices and third-party sensors, through an integrated 4G module.
You can simulate thermal behaviour of your transformer with eDAC, by employing thermal modeling, and ensure that your transformer operates within safe temperature limits, prolonging its lifespan and maintaining grid reliability.
Transformer safety:
- Enables predictive and preventive maintenance based on accurate, real-time insights
- Thermal modeling available
Serviceability:
- Simple Plug-and-play installation
- Suitable for retrofitting
- Easy data access from remote and on-site
- USB-A data logger for an easy firmware upgrade directly on-site
Connectivity:
- Possibility to remote the control signals through common communications protocols
- Possibility to monitor several transformer parameters
Transformer service
We ensure outstanding performance for your transformer throughout its lifecycle.
Our expert team offers personalized consulting, advanced diagnostics, and proactive maintenance strategies to enhance functionality and reduce downtime.
We also provide a full range of on-site services, including maintenance, testing, and transformer digitalization, to keep your operations running smoothly.
Our offering includes:
- General Maintenance and Electrical Testing
- Transformer digitalization
- Installation & Commissioning
- Accessories replacement & retrofitting
- Oil analysis*
*in collaboration with an external accredited laboratory
More info: https://comem.com/en/service/transformer-service/
Our product offering:
Bushings
Need to fulfill a wide range of requirements depending on the transformer design, current capacity, and rated voltage. We offer an extensive range of solutions for different types of applications and environments.
Our offering includes:
- Porcelain oil bushings
- Epoxy resin bushings
- Resin silicon bushings
More info: https://comem.com/en/categories/bushings/
Conventional accessories
Enable to run transformer operations safely and efficiently and protect the transformer from the risk of damage when unexpected faults occur. The choice depends on transformer power and type. Our offering includes a wide range of solutions for different types of applications and environments.
Our offering includes:
- Breathers
- Buchholz relays
- Integrated safety devices
- Liquid level indicators
- Pressure relief devices
- Shutter valves
- Temperature indicators
- Temperature monitoring units for dry-type transformers
More info: https://comem.com/en/categories/conventional-accessories/
Accessories for smart transformers – eDevices
Enable continuous monitoring and data gathering of transformer health. The eDevices are a key enabler for the condition-based maintenance approach. All eDevices can be installed on a new transformer as well as on an existing asset. They can also complement already installed smart accessories from third-party suppliers, enabling gradual digitalization of your transformer and remote asset monitoring.
Our offering includes:
- Buchholz relays
- Contactless liquid level indicators
- Data aggregator
- Integrated safety devices
- Liquid level indicators
- Oil diagnostic devices (DGA)
- Pressure relief devices
- Self-dehydrating breathers
- Temperature indicators
- Temperature monitoring units for dry-type transformers
More info: https://comem.com/en/categories/edevices/
Fiber optic temperature measurement systems (FOTEMP)
Utilizing fiber optics for temperature monitoring allows continuous and accurate proactive measures to prevent supply compromise.
The system consists of:
- Fiber optic devices
- Fiber optic sensors
- Fiber optic accessories
More info: https://comem.com/en/optocon/
Pdf version?
Diego Pattaro holds a Bachelor and a Master Degree in Aerospace Engineering from the University of Padova. After experiences in the field of mechanical design, he embarked in his journey into the electrical world with DASOTEC Company. At DASOTEC, he has been active in various roles, ranging from promotion, sales and assistance of monitoring systems and electrical test equipment, primarily for power transformers, to performing on-site installations and commissioning of monitoring devices, organization of testing and maintenance tasks, and hands-on work with maintenance activities and transformer oil treatment, combining both the intellectual activity with practical application. Currently he serves as the Chief Executive Officer (CEO) of DASOTEC, where he continues to sharpen his expertise and knowledge within the world of electromechanics.
James Reid holds a MSc Reliability Engineering & Safety Management from Heriot Watt University and a BEng Chemical Engineering from University of Edinburgh. He has been a chartered Chemical Engineer with the IChemE since 2002 and is also a member of ASTM. Based in the UK, James leads the technical applications team providing global support for all the ester-based products manufactured by global specialty materials company M&I Materials, including the MIDEL range of dielectric liquids. Prior to joining the technical team at M&I Materials in 2019, James has over two decades experience in technical and operational management roles with major UK utility, leading international chemical, and specialist oil companies.
Jean SANCHEZ is senior transformer engineer at EDF, French main generation utility, mostly on investigations, tests and its associated diagnosis, Factory Acceptance Tests, HV bushings, fleet assessments. He’s involved in IEC and CIGRE working groups. He completed a PhD degree on power transformers fault diagnosis in 2011 with a French power transformer reparation factory, TSV.
Ufuk Kivrak has BS and MS degrees in mechanical engineering. He has more than 25 years of industrial experience in transformers and power grid industries. He has worked for ABB in several management positions in Turkey, Thailand and Switzerland. He has led Supply Chain Management organization of ABB Transformer business globally from 2003 to 2015, which included explosive growth of transformer market from 2003 to 2008, which was followed by a market collapse in 2009 and onwards. In 2015, he has joined Alstom Grid as VP-Strategic Sourcing and continued as Head of Strategic Sourcing in GE Grid Solutions after Alstom was acquired by GE. Currently he is Managing Director of SCM Consulting GmbH.
Armando Pastore received his mechanical engineering master’s degree from University of Naples Federico II. After the graduation he had different experiences in automotive and railway sectors. He joined the power grid business sector in 2012 working as R&D mechanical engineer and product industrialization with special focus on transformer and wall bushings for HVDC application. Since 2015 he has been working at GE Grid Solution covering different roles as engineering manufacturing, production, technical and product manager. In 2022 he has been appointed chair for Italy SC 36A – Insulated bushings.
Riccardo Actis was born in 1969 He holds a degree in mechanical engineering, obtained from Polytechnic University of Turin in 1995. Today he is the Global Operation Manager of the On-Site Service Department at Sea Marconi, with more than 25 years of experience in organization and follow-up of on-site work activities, in Italy, France, Spain, and other countries (KSA, Argentina, Uruguay, Japan). Riccardo has a deep knowledge of condition-based maintenance, as well as treatment and decontamination techniques of insulating liquids.
Dr. Diego Robalino is the Global Industry Director – Utilities Transformers at Megger. He specializes in the diagnosis of complex electrical testing procedures and the strategic development of state-of-the-art transformer testing technology. He has over 25 years of involvement in the electrical engineering profession with management responsibilities in the power systems, oil and gas, and research arenas.
Vojko Mrdic has been working as applications engineer in transformer testing group at DV Power, a well-known manufacturer of test and measurement equipment for electric power industry. His responsibilities include development of new methods for transformer testing, providing technical support to DV Power customers, as well as performing on-site field testing. Before joining DV Power 13 years ago, he had been working at the large apparatus manufacturer Energoinvest RAOP for 1 year as a junior engineer in circuit breakers and instrument transformers development department. Vojko has a BSc diploma degree in electrical engineering from the University of East Sarajevo.
Roberto Fernández is an experienced Electrical Engineer who has spent most of his career on the transformer design field and R&D activities focused on the magneto-electric and thermal design for a wide range of transformer applications. He is member of the IEC, CIGRE and several national and international working groups. He is currently the Application Technical Leader at Cargill Bioindustrial.
Field Service engineer since 1976 working for Merlin-Gerin on GIS Switchgear, Schneider Electric Equipment, JST Tranformateurs , following in SIEMENS as African Aera sales Manager and JST Maintenance as business development
Dr. Sameera completed his Bachelor of Science in Engineering (Honors) and Master of Science in Electrical and Electronic Engineering at the University of Peradeniya, Sri Lanka. After graduating, he worked as a High Voltage Laboratory Instructor at the University of Peradeniya and as a Research Assistant in the Condition Monitoring Team at the Engineering Design Centre. He then pursued his PhD at the University of Queensland, Australia. Following that, he joined the same university as a postdoctoral research fellow, where he investigated the use of drone footage and Machine Learning technologies for detecting overhead conductor defects. After completing his fellowship, he became a consultant at EA Technology, one of the world’s leading asset management consultancy service providers. Currently, he works as an asset strategy engineer at Energy Queensland, the largest distribution network service provider in Australia.
Christian Pößniker received the B.Sc. and M.Sc. degrees in electrical and computer engineering from the Technical University of Munich, Germany, in 2015 and 2019, respectively and the B.Eng. (Hons) and M.Eng. degrees in electrical engineering from the University of Queensland, Australia, in 2017. He is currently pursuing a Ph.D. degree within the Centre for Smart Grid, Department of Engineering, at the University of Exeter, United Kingdom. He has previously worked as a certified electronics technician after receiving a craftsman apprenticeship in Germany in 2010. His research interests include ageing transformer insulation systems and overloading constraints.
Vander Tumiatti is the founder and owner of SEA MARCONI GROUP (since 1968 – www.seamarconi.com), Torino, Italy, an international company that is involved in research, technologies, products, and services for energy and environment. He has developed BAT and BEP Sustainable Solutions for Life Cycle Management (LCM) of insulating liquids and transformers focalized on inventory, control, diagnosis, decontamination, depolarization (DBDS, TCS, and polar compounds) and dehalogenation / detoxification (PCBs/POPs). He holds more than 40 international patents and is the author of many international technical and scientific publications. He has been the Assistant Secretary of IEC TC10 from 2000 to 2024. He is also a member of several international groups, with major participation in technical normative activities (CEN, IEC, CIGRE, IEEE). In 2009 June, he received – “1906 Award”, the IEC’s award for “the precious contribution to the understanding of the potentially corrosive behaviour of mineral insulating oil used in power transformers and for his discoveries, recognized worldwide, in the development of diagnostic chemical analyses”. He also received the “Alessandro Volta” award as expert since 1978 in the standardization activities. He was the coordinator of European and national research projects in the field of circular and granular bioeconomy (BIOENPRO®). He also inventor of My Transfo Meeting since 2002 (www.mytransfo.com)
Dr Bruce Pahlavanpour BSC, DIC, PHD from Imperial College, London. Recently he joined Ergon International as consultant. Dr Pahlavanpour was Chief Specialist for the Electrical industry application group within Nynas TDMS.
Fabio Scatiggio was born in Venezia, Italy, in 1957.