Three-Phase Transformer Course
This course equips you with essential skills for three-phase transformers from 33 kV to 132 kV. You will master design principles, vector groups, sizing calculations, protection schemes, one-line diagrams, relay coordination, and field testing procedures to confidently specify, commission, and operate safe and efficient substation transformers in power systems.

from 4 to 360h flexible workload
valid certificate 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. The course covers power system basics, vector groups, tap changers, fault analysis, one-line diagrams, relay coordination, and comprehensive field testing to ensure reliable, safe, and efficient transformer operations.
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.
- Conduct field tests for phasing, polarity, oil, and insulation.
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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