Explore Field Experiences Using the SEL-T400L Time-Domain Line Protection

Have you ever seen relay protection performance that eliminates relay operating times, clears faults in breaker operating times, and locates faults within one tower span? This type of performance is not only possible but field-proven using the SEL-T400L Time-Domain Line Protection.

This recorded webinar focuses on ultra-high-speed protection using SEL’s time-domain technology based on traveling waves and incremental quantities. Its functionality includes the underreaching incremental-quantity distance protection element (TD21), permissive overreaching transfer trip logic with traveling-wave (TW32) and incremental-quantity (TD32) directional elements, and the traveling-wave differential protection scheme (TW87).

During this webinar, you will:

• Gain insights about the SEL-T400L relay’s performance from recent field events.
• Learn how to analyze traveling-wave events and the operation of time-domain protection.
• Learn how to perform traveling-wave-based fault locating offline for simple line configurations.
• View traveling-waves in Bewley lattice diagrams.
• Hear about the new continuous line-monitoring feature for detecting incipient events.
• Get a sneak peek of the new SEL-T401L Ultra-High-Speed Line Relay, which is scheduled to release later this year.