Protrafo's power transformers

Exceptional engineering, proces, quality and efficiency

Redefine reliability and performance in high-voltage energy distribution.

Designed to handle immense loads with precision, these transformers are the backbone of industrial, commercial, and utility networks. With cutting-edge engineering and robust materials, they ensure seamless power flow, even under the most demanding conditions.

Offering unparalleled energy efficiency and environmental sustainability, Protrafo power transformers are built to support the world’s growing energy demands while minimizing operational costs. Whether for grid integration, renewable energy and BESS projects, or large-scale industrial applications, Protrafo power transformers deliver the power you need with the quality you trust. Selected units are available from stock.

Engineering & Tailor made Our transformers equipped with expert projectsolutions — enabling predictive maintenance and enhancing operational safety.
Efficiënt Operation Designed to handle immense loads with precision. With cutting-edge engineering and robust materials, they ensure seamless power flow, even under the most demanding conditions
ECODESIGN Compliant Efficiency Designed to meet TIER2 ECODESIGN standards, our transformers are built for sustainability, offering exceptional energy efficiency with significantly reduced environmental impact.
Vacuum Oil Filling for Purity Each transformer is filled using a vacuum oil-filling process to eliminate moisture and air, maximizing dielectric strength and ensuring optimal thermal performance.
Safety-First Protection Features Advanced protection systems, including pressure relief devices and temperature sensors, ensure reliable operation and safeguard both the transformer and its surroundings.
Smart Monitoring Capabilities Our Transformer enables real-time monitoring of key parameters such as temperature, oil level, and pressure conditions

From Engineering to Delivery

A Proven Process You Can Rely On

At Protrafo, every transformer goes through a streamlined process — from engineering to delivery. Each step is handled by specialists to ensure top quality and reliability. Discover our completed transformer projects.

Engineering

Our engineers translate project requirements into precise technical designs. Every transformer is custom-engineered for maximum performance, safety, and seamless integration into your infrastructure.

Production

Each transformer is engineered and crafted with care in state-of-the-art facilities. Our production team follows strict quality standards to ensure durability, efficiency, and long-lasting performance.

Project Management

From the first call to final delivery, our project managers keep everything on track. You’ll always know what to expect — with timelines, updates, and expert coordination every step of the way.

Testing

Before any transformer leaves facility, it undergoes extensive testing. Our engineers verify every detail to guarantee optimal safety, performance, and compliance with international standards.

Logistics & Delivery

We coordinate every shipment with precision. Whether it’s local or international, our logistics partners ensure your transformer arrives safely, on time, and ready for installation.

Commissioning

We coordinate the supply chain with precision. Whether local or international, our commissioning partners ensure your transformer is installed safely, on time, and ready for operation.

Frequently asked questions

Frequently Asked Questions and question about Power Transformers. Can't find your answer? Request a quote — or explore our oil-type distribution transformers and cast resin transformers.

A power transformer is an electrical device used to transfer high-voltage electrical energy between circuits, typically within power generation, transmission, and distribution systems. It adjusts voltage levels to ensure efficient long-distance power transmission and safe delivery to end users. Power transformers are essential in maintaining grid stability and energy efficiency.

Yes, we provide on-site coordination and, if required, technical assistance to ensure a smooth installation process.

Every transformer is professionally packaged and secured according to industry standards. We work with experienced logistics partners to minimize risks during transport.

Power transformers are commonly used in voltage ranges above 36 kV, with typical primary voltages of 110 kV, 150 kV, or higher, and secondary voltages around 10 to 36 kV.

Power transformers operate at higher voltages and are optimized for maximum efficiency under full load, typically used in transmission networks. Distribution transformers work at lower voltages and are designed for variable loads closer to end users.

Selected units are available from stock, but most power transformers are engineered to order because grid operators and industrial clients require specific voltages, impedances and cooling configurations. Our online inventory shows which transformers are available for immediate delivery. For project-specific power transformers up to 100 MVA, request a quote and our engineering team will confirm the specification and the current production lead time.

Protrafo power transformers are designed and tested in accordance with the IEC 60076 series, the international standard for power transformers. Units delivered within the European Union also comply with the EU EcoDesign Regulation (Tier 2), which sets strict limits on load and no-load losses. Routine tests are performed on every transformer before shipment, and type or special tests can be arranged on request as part of the factory acceptance test.