Transformer and CT/PT are critical components in electrical power systems, used for voltage regulation, measurement, and protection. A transformer is designed to transfer electrical energy between circuits, either stepping up or stepping down voltage levels to ensure efficient transmission and distribution. On the other hand, CT (Current Transformer) and PT (Potential Transformer), collectively known as instrument transformers, are used for monitoring and metering purposes. CTs reduce high currents to safe levels for measurement devices, while PTs step down high voltages to lower values suitable for metering and protection equipment. Together, these devices ensure the safe, accurate, and efficient operation of electrical networks.