Relay testing plays a critical role in ensuring the proper functioning of protection systems within power networks. Power systems are susceptible to various faults, including short circuits, overloads, and other issues that could lead to significant damage to equipment or even widespread power outages. Protection relays are designed to detect such faults and take corrective action, such as tripping a circuit breaker to isolate the problem. However, for these protection systems to be effective, they must be regularly tested to ensure that they operate correctly under fault conditions. This article explores the importance of relay testing, the methods involved, and the tools used in this vital process.