The traditional acceptance tests are used to determine that the relay’s system configuration,
protection, control, metering, communication, alarms and reporting
features are functional and that their response is in accordance with the manufacturer’s
specifications. They are also used to check that the relay has been correctly
installed. As with traditional relays, acceptance tests include calibration or
adjustment verification for any parameter measured with secondary current and
voltage injection. Current, voltage, frequency and phase angle relationship applied
to the device under test should be controlled and properly monitored. Nowadays,
state-of-the-art protective relay test systems are available with graphical test software
programs, preconfigured test routines and the capability of personalising test
routines that can be later stored for testing similar relays. Most of these software