Three-Phase Transformer Course
This course equips you with essential skills to master three-phase transformers from 33 kV to 132 kV, covering design principles, vector groups, sizing calculations, protection schemes, one-line diagrams, and field testing procedures. You will learn to specify, commission, and operate substation transformers safely and effectively, ensuring optimal performance and reliability in power systems.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
Acquire hands-on expertise in selecting, sizing, connecting, protecting, and commissioning three-phase transformers rated from 33 kV to 132 kV. Gain knowledge on power system basics, vector groups, tap changers, fault analysis, one-line diagrams, relay settings, and on-site testing to confidently design, specify, and manage safe, reliable, and efficient transformer systems.
Elevify advantages
Develop skills
- Size three-phase transformers using MVA, kV, and current calculations practically.
- Interpret substation one-line diagrams, symbols, power flow, and switching paths swiftly.
- Select and configure vector groups like delta or wye for grounding, fault handling, and harmonics control.
- Set up transformer protection including CT/PT ratios, relay settings, and fault thresholds accurately.
- Conduct field tests such as phasing, polarity, oil quality, and insulation checks prior to energisation.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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