From 110 kV transmission to large industrial connections — we engineer, test to IEC 60076, deliver and commission each unit to your exact specification, across Europe.
Or call us directly +31 (0)85 760 7033 We speak EN · NL · DEDesigned to handle immense loads with precision, Protrafo power transformers are the backbone of utility, industrial and commercial networks. High-grade core steel, copper windings and conservative thermal design deliver seamless power flow with minimal losses — for decades.
Whether it feeds a transmission substation or a large industrial connection, every unit is engineered to your exact voltage levels, impedance, losses and footprint — then tested to IEC 60076, delivered and commissioned across Europe.
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Typical, configurable parameters for a Protrafo power transformer. The final specification is agreed together during the design phase.
Engineered for maximum efficiency under rated conditions, minimising losses in transmission networks and reducing total cost of ownership across the asset lifetime.
Grain-oriented electrical steel cores and copper windings, designed to withstand short-circuit forces, thermal cycling and decades of continuous operation.
Custom voltage ratios, impedances, cooling configurations and accessories — every unit is designed around your exact network requirements.
Compatible with oil-temperature sensors, Buchholz relays and digital tap-changer controls for real-time asset management and condition monitoring.
A conservative thermal design leaves headroom for load growth, supporting a reliable service life of thirty years and beyond.
ONAN, ONAF, OFAF and ODAF configurations to meet the efficiency and footprint requirements of any substation or plant location.
High-grade materials and sealed oil systems keep interventions and operating costs low throughout the service life of the transformer.
Designed and tested to the IEC 60076 series and relevant EU directives, ready for approval across European transmission and industrial networks.
Every power transformer completes a full test programme to IEC 60076 before it leaves the factory — and you are welcome to witness the acceptance test in person.
Custom-engineered to a 20 / 20 kV isolation specification for an E-boiler electrification project, this power transformer was designed, built and factory-tested to the customer's exact requirements — then shipped and installed on location in Finland, energised and in service within 24 weeks of the purchase order.
Every power transformer is a project. Each stage is handled by specialists — with a single point of contact from first drawing to safe energisation.
Your requirements are translated into a precise electrical and mechanical design, optimised for performance and seamless grid integration.
Manufactured under strict quality control with premium core steel and copper windings for long-term reliability in demanding networks.
A dedicated project manager keeps everything on track — coordinating stakeholders, giving regular updates and protecting your timeline.
A full routine and type-test programme to IEC 60076 — including heat-run, impulse and short-circuit checks — with an optional witnessed FAT.
Professional packaging and experienced heavy-lift logistics partners bring the unit safely to your substation, by road, rail or sea.
On-site coordination, pre-energisation checks and safe energisation so your transformer enters service correctly, first time.
From first drawing to cross-border delivery, communication was fast and honest. That responsiveness is why we keep coming back for our grid-connection projects.
Let's engineer it together
Talk to our engineers about your voltage levels, losses, footprint and timeline. We turn your requirements into a precise design and a formal quote — valid for 30 days, typically within one business day.
Frequently asked questions about power transformers. Can't find your answer? Discuss your project with our team — or explore our oil-type distribution and cast-resin transformers.
A power transformer transfers high-voltage electrical energy between circuits in generation, transmission and distribution systems. It adjusts voltage levels to enable efficient long-distance transmission and safe local distribution.
Our power transformers are engineered to order, typically with primary voltages of 110 kV, 150 kV or higher, secondary voltages around 10–36 kV, and ratings from roughly 5 MVA upwards — always tailored to your network.
Every unit completes routine and type tests in accordance with IEC 60076 — including winding resistance, ratio, loss measurement, heat-run, impulse and short-circuit checks. You are welcome to witness the factory acceptance test, and a full test report ships with the transformer.
Yes. We provide on-site coordination and, where required, technical assistance through our commissioning partners to ensure a smooth installation and safe energisation.
Each transformer is professionally packaged and secured to industry standards. We work with experienced heavy-lift logistics partners to minimise risk during road, rail or sea transport to your site.
Power transformers operate at higher voltages and are optimised for maximum efficiency at full load, typically in transmission networks. Distribution transformers work at lower voltages and are optimised for efficiency across varying loads in local networks.
They are designed and tested to the IEC 60076 series. Units delivered within the EU also comply with the relevant directives on electrical equipment safety and electromagnetic compatibility.
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