A comprehensive testing program should simulate fault and normal operating conditions of the relay. Acceptance testing, commissioning, and startup will include control power tests, current transformer and potential transformer tests, and any other device testing . Only correctly operating protection relays protect your primary equipment from damage and contribute to a reliable power grid. This is why protection relays must undergo thorough tests throughout their entire lifecycle – from development and manufacturing to commissioning and regular maintenance. The testing and verification of relay protection devices can be divided into four groups: Type tests are needed to prove that a protection relay meets the claimed specification and follows all relevant standards. Since the basic function of a protection relay is to correctly function under abnormal. Megger's smart relay testing solutions and expert support help you validate protection performance, improve system reliability, and ensure continuity of power across your network. They serve one of the main purposes - keep operation and power supply as smooth and stable as possible, and protect the assets and remaining grid as fast as possible when needed.