Three-Phase Transformer Course
This course covers mastering three-phase transformers from 33 kV to 132 kV, including design principles, vector groups, sizing calculations, protection schemes, one-line diagrams, and field testing procedures. Participants will gain the confidence to specify, commission, and safely operate substation transformers with efficiency and reliability.

4 to 360h flexible workload
certificate valid in your country
What will I learn?
Gain practical expertise in selecting, sizing, connecting, protecting, and commissioning three-phase transformers rated 33 kV to 132 kV. Master essential topics like power system basics, vector groups, tap changers, fault analysis, one-line diagrams, relay coordination, and field testing to confidently design, specify, and maintain safe, reliable transformer systems.
Elevify advantages
Develop skills
- Size three-phase transformers using MVA, kV, and current formulas.
- Read and interpret substation one-line diagrams for power flow and switching.
- Configure vector groups with delta or wye for grounding, faults, and harmonics.
- Set transformer protection including CT/PT ratios and relay settings.
- Perform field tests like phasing, polarity, oil, and insulation checks.
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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