Three-Phase Transformer Course
This course equips you with skills to master three-phase transformers from 33 kV to 132 kV. You will learn design principles, vector groups, sizing methods, protection strategies, one-line diagrams, and field testing procedures to confidently specify, commission, and operate substation transformers safely and efficiently.

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. Master power system basics, vector groups, tap changers, fault calculations, one-line designs, relay coordination, and 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 substation one-line diagrams to interpret symbols, power flow, and switching paths.
- Configure vector groups by selecting delta or wye connections for grounding, faults, and harmonics.
- Set transformer protection including CT/PT ratios, relay pickups, and fault limits.
- Perform field checks like phasing, polarity, oil, and insulation tests before energizing.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
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