Key Aspects of Relay Functional Testing:

Verification of Operation: Ensure the relay is able to open and close contacts correctly when energized and de-energized. Test for proper response to input signals such as voltage, current, and control signals. Response Time: Verify that the relay reacts within the specified time to a change in control signal or input conditions. Contact Integrity: Check that the relay’s contacts do not suffer from pitting, corrosion, or wear, which can affect their ability to conduct electricity properly. Overload/Short-Circuit Protection: Confirm that the relay operates correctly under overload conditions and responds to short circuits if applicable.