Potential Transformer Phasor diagram for Transformation Ratio and Phase angle

Potential Transformer Phasor Diagram | Transformation Ratio & Phase Angle Error Explained In this detailed lecture, we draw and explain the complete phasor diagram of a Potential Transformer (PT). Learn how to determine the Transformation Ratio (Voltage Ratio) and Phase Angle Error using the phasor diagram step by step. Topics Covered: • Phasor diagram of PT (with secondary voltage, current, and flux) • Actual transformation ratio vs Nominal ratio • Phase angle error in potential transformers • Derivation of formulas with graphical explanation This concept is very important for Electrical Engineering students, especially for Power System Protection, Instrumentation, and GATE/ESE exam preparation. Perfect for understanding why potential transformers are not ideal and how errors are calculated. ⏱️ Timestamps: 00:00 - Introduction 01:30 - Phasor Diagram Basics 08:00 - Transformation Ratio Derivation 15:00 - Phase Angle Error Calculation 22:00 - Important Formula Summary