What is the primary role of a current transformer?

The primary role of a current transformer is to measure current for metering and protection applications. Current transformers are specifically designed to step down high currents to a lower, more manageable level, while still providing a proportional representation of the primary current. This allows for accurate measurement and monitoring of electrical currents in power systems.

In metering applications, the information gathered by current transformers is critical for billing purposes and for the analysis of energy consumption in commercial and industrial settings. For protection applications, current transformers help detect faults and overloads within electrical systems, allowing for the activation of protective devices to prevent damage and ensure safety.

By converting high current levels to lower values, current transformers enable safe and effective monitoring and control of electrical systems, ensuring that the infrastructure remains stable and operational.