Potential transformers are primarily used to:

Potential transformers are primarily used to reduce voltage levels in electrical systems. They are designed to step down high voltages to lower, more manageable levels for measurement and monitoring purposes. This function is critical because it allows for accurate voltage measurements without the risk of damage to measuring instruments or the personnel using them.

In power systems, potential transformers take high voltage AC signals and provide a corresponding lower voltage signal that is proportional to the high voltage. This transformation enables the safe operation of meters, relays, and other protective devices which require lower voltage inputs. Using potential transformers enhances the safety and reliability of the electrical system by ensuring that instrumentation operates within its designed limits.

While monitoring power factor and distributing power efficiently are important aspects of electrical systems, they are not the primary functions of potential transformers. Instead, their main job is focused on safely scaling down voltages for measurement and protection.