Schweitzer Engineering Laboratories
Newsroom
Apr 17, 2018
SEL Adds PTP Support to SEL-2740S Software-Defined Network Switch
The SEL-2740S Software-Defined Network Switch improves cybersecurity, network performance, and traffic management in the substation LAN. And now, the SEL-2740S supports Precision Time Protocol (PTP), defined by the IEEE 1588 standard. PTP is used to synchronize time over Ethernet networks to within a microsecond.This microsecond accuracy is required for power system applications such as synchrophasors, Sampled Values, and traveling-wave fault locating. The SEL-2740S Switch acts as a PTP transparent clock and uses the IEEE C37.238 power system profile to ensure high-accuracy time synchronization throughout the substation.With the SEL-2740S, the SEL-2488 Satellite-Synchronized Network Clock and SEL-400 series protective relays, SEL now offers a reliable, end-to-end PTP solution for the electric utility substation. This single-manufacturer solution ensures compatibility and simplifies support.More details on SEL software-defined networking are available on the solution page.