Instrument Transformer

An instrument transformer is a specialized type of transformer used in electrical power systems to safely and accurately measure high voltage and high current, which are then transformed into lower, measurable values. They are crucial for operating instruments and protective relays in a safe and efficient manner.
Key characteristics and functions:
Isolation:
Instrument transformers isolate the measuring and protective devices from the high voltage or high current power circuits.
Scaling:
They step down high voltage or high current to levels that are compatible with standard measuring instruments and protective relays.
Measurement:
They enable accurate measurement of electrical quantities like voltage, current, power, and energy.
Protection:
They play a vital role in power system protection by providing accurate measurements to protective relays, enabling them to detect and respond to faults.