The built-in event playback feature available in the SEL-T400L Time-Domain Line Protection and the SEL-T401 Ultra-High-Speed Line Relay provides new opportunities for testing ultra-high-speed (UHS) relays. With it, you can test the complete suite of relay features, including traveling-wave-based protection and fault-locating functions, without the use of a test set to inject simulated traveling-wave pulses.
Event playback substitutes actual voltages and currents at the relay terminals with the contents of an uploaded test file. You can use the event playback feature to perform bench testing and commissioning of a single UHS relay or a scheme of UHS relays (i.e., end-to-end testing) to validate relay settings and relay performance without secondary injection of currents and voltages.
During this webinar, you will: