What are two types of instrumentation transformers?

Two common types of instrumentation transformers are:

Current Transformers (CTs): 

These transformers step down high currents to a standardized lower value proportional to the current flowing in a power line. Current Transformers (CTs) are primarily used for metering and protection purposes in power systems. They provide a safe means to measure high currents without directly connecting measuring instruments to the high-voltage lines.

Voltage Transformers (VTs) or Potential Transformers (PTs): 

These transformers step down high voltages to a standardized lower voltage suitable for measurement and control purposes. VTs are commonly used for metering, protection, and control applications in power systems. They allow instruments and relays to accurately measure and monitor voltages without directly exposing them to the high voltages present in the power lines.



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