Design of Distribution Transformers

Design & Engineering

Duration: 23 hours

Course Programme Type: Professional Certificate / Continuing Education Program

Course Programme Duration: 22 e-lessons (sequential), equivalent to approximately 22 hours of guided learning and 18–22 hours of independent study (recommended), depending on participant background and elective selection.

Course Programme Purpose: The Design of Distribution Transformers programme provides participants with a comprehensive understanding of how distribution transformers are specified, designed, analysed, and optimised throughout their lifecycle. The programme integrates electromagnetic, thermal, mechanical, and material considerations with international standards and modern design methodologies. It equips participants with both foundational theory and practical engineering logic required to design, evaluate, and optimise distribution transformers for conventional grids, renewable integration, and emerging smart-grid applications.

Check out the course brochure
Design of Distribution Transformers

What you will learn

  • Apply electromagnetic principles (Faraday’s law, mutual inductance, reluctance) to transformer sizing and voltage transformation.
  • Translate technical specifications into structured transformer design inputs and constraints.
  • Design and evaluate magnetic cores, windings, insulation systems, and cooling solutions for both oil-filled and dry-type transformers.
  • Analyse losses, temperature rise, short-circuit behaviour, and leakage inductance as interacting design boundary conditions.
  • Assess the impact of materials, geometry, and operating frequency on efficiency, reliability, and lifetime.
  • Evaluate transformer behaviour under no-load, load, transient, and fault conditions using equivalent-circuit thinking.

Presenters

Mario Salano

Academy Lecturer

Mario Salano

Ahmed Gamil is a transformer design and thermal management specialist leading application engineering at Cargill. With an M.Sc. in High Voltage Technology from RWTH Aachen, his career includes serving as a Domain Expert at Hitachi Energy (2022–2026) and Head of R&D at SGB-SMIT Group.

A key figure in international standardization, Ahmed developed the "G-Approach" for temperature rise and serves on IEC MT 60076-2. In CIGRE, he leads task forces within JWG A2/D1.72 (Retrofilling) and JWG A2/C4/D1.77 (VFT Overvoltage), and is a contributing author to the CIGRE Green Book on "Transformer Life Management."

All Levels
Design of distribution transformers - e-lesson #11 - illustration 850 x 400

Intermediate Level

Design of distribution transformers – e-lesson #11: Practical transformer design calculation (elective)

This is the eleventh e-lesson in the Design of distribution transformers course, conducted on the Intermediate level. Here you can save your seat. This lesson provides a deep dive into the practical design calculations for oil-immersed distribution transformers. The instructor, Mario, guides us through the key concepts and considerations that go into transformer sizing and […]

Intermediate Level

Design of Distribution Transformers – e-lesson #5 – Construction elements

This lesson covers the fundamental principles of transformer design, focusing on the electromagnetic aspects. The presenter, Mario Solano, explains that transformer design involves balancing various requirements and constraints, including power, voltage, losses, temperature, insulation, and short-circuit performance. The key principle is Faraday’s law of electromagnetic induction, which states that the induced voltage is proportional to […]

Master's Level

Design of distribution transformers – e-lesson #13: Amorphous Transformers

This is the thirteenth e-lesson in the Design of distribution transformers course, conducted on the Master’s level. Here you can save your seat.   In this lesson, we will explore the topic of amorphous transformers – a newer transformer technology that utilizes amorphous alloy cores instead of the more common grain-oriented silicon steel. Amorphous transformers […]

DoDT course - e-lesson #14 - illustration 850 x 400 px

Master's Level

Design of distribution transformers – e-lesson #14: Cast resin & dry type transformers

This is the fourteenth e-lesson in the Design of distribution transformers course, conducted on the Master’s level. Here you can save your seat. This lesson provides an overview of cast resin and dry type distribution transformers, which use no liquid for insulation or cooling unlike traditional oil-filled units. Hosted by transformer expert Mario Salano, the […]

Design of distribution transfomrers - e-lesson #15 - illustration - 850 x 400 px

Master's Level

Design of distribution transformers – e-lesson #15: Leakage inductance considerations and proximity losses

This is the fifteenth e-lesson in the Design of distribution transformers course, conducted on the Master’s level. Here you can save your seat. This transformers academy lesson focuses on leakage inductance, a key feature affecting power factor, voltage, and fault currents in distribution transformers. Leakage inductance depends on the transformer’s geometry. The lesson reviews the […]

DoDT course -e-leeson #16 - illustration 850 x 400 px

Master's Level

Design of distribution transformers – e-lesson #16: Advanced methodologies in custom design with special requirements

This is the lesson number #16 in the Design of distribution transformers course, authored and hosted live by Mario Salano. It is created and presented on Master’s level and you can save your seat here. This transformers design course with instructor Mario Salano explores advanced methodologies and specialized requirements for custom distribution transformer development. The […]

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