How to Determine the Vector Group of a 3-Phase Transformer |Experiment 03( Hardware Part)

আসসালামু আলাইকুম! Welcome to Edunexa Academy. In this detailed 2025 guide for our fellow Electrical and Electronic Engineering (EEE) students in Bangladesh and around the world, we demonstrate one of the most crucial experiments in the Power System Analysis Lab: Determining the Vector Group of a Three-Phase Transformer.

Understanding transformer vector groups (like Yd1, Dy11, Yy0) is essential for the parallel operation of transformers and a very common topic in job interviews and viva exams. This step-by-step practical video will guide you through the entire process, from theory and circuit connections to analyzing the results.

🔬 Experiment Details:
Experiment Name:Determination of vector group of a three-phase three winding transformer.
Course: Power System Analysis Laboratory
Course Code: 0713-316

⏰ Timestamps / Video Chapters:
00:00 - Introduction & Objectives of the Experiment
01:25 - Core Theory: What is a Vector Group? (Star, Delta & Clock Notation)
04:10 - Equipment Overview & Safety Precautions
05:50 - Circuit Diagram Explanation for the Voltage Test
07:30 - Step-by-Step Hardware Connections on the Transformer Panel
10:15 - Performing the Test: How to Measure Voltages Correctly
12:40 - Recording Data in the Observation Table
13:50 - Analyzing the Results & Drawing the Phasor Diagram
15:45 - Final Conclusion & Identifying the Vector Group
16:30 - Why This Matters: Practical Applications & Viva Tips

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💬 Questions? Let us know in the comments which vector group you are working on in your lab! We'll do our best to help.

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