What is the role of a power sensing relay on the switchboards?

The role of a power sensing relay on switchboards is primarily associated with the control and management of electrical loads in accordance with system conditions. Specifically, activating non-vital load shedding is a critical function because it allows for the selective disconnection of loads that are not essential. This action is crucial during situations where the demand for power exceeds the available supply, helping to protect the overall integrity of the power system.

By shedding non-vital loads, a power sensing relay contributes to maintaining the stability of the electrical system, ensuring that vital systems remain operational. This is particularly important in scenarios where preserving power and preventing overload conditions are necessary for safe operations. Therefore, this ability to manage loads dynamically and maintain essential services is a key reason why activating non-vital load shedding is recognized as the primary role of a power sensing relay in switchboards.

Other roles like maintaining voltage levels, monitoring energy consumption, and enhancing power quality are also important in the power management domain. However, they do not directly represent the specific function of a power sensing relay, which revolves more around the active management of loads in response to real-time conditions in the power network.