Current Transformer (CT) Explained | Working, Ratio, Errors & Uses in Power System

Current Transformer (CT) Explained | Working, Ratio, Errors & Uses in Power System #CurrentTransformer #CT #ElectricalEngineering #PowerSystem #Instrumentation #Substation #ProtectionRelay #GATE2026 #EngineeringConcepts #HighVoltage In this video, we explain the fundamentals of a Current Transformer (CT) in a simple and practical way. You will understand what a CT is, how it works, and why it is used in power systems. We discuss the proportional relationship between primary and secondary current, CT ratio selection, and how standard secondary values (1A and 5A) are used in real applications. The video also covers important concepts like phase angle error, ratio error, and why they occur in practical current transformers. You will also learn how CTs provide electrical isolation between high-voltage power systems and low-voltage metering and protection circuits. We explain how CTs are used in ammeters, energy meters, and protection relays in substations. This video is perfect for electrical engineering students, GATE/PSU aspirants, and professionals working in power systems. Link of our website : https://circuitmasterclass.com/