Project Description

Precise Timing-Clocks

The need for substation time synchronization has evolved from time-stamping basic Sequence of Events and disturbance recording information to more mission-critical needs, such as synchrophasor measurement (IEEE C37.118), sampled measured values (IEC 61850 9-2), and traveling wave fault location. These new applications demand the same reliability, security, and dependability for precise timing-clocks as other equipment designed for critical infrastructure applications, like protective relays in a substation.


Related Products

SEL-2488 Satellite-Synchronized Network Clock

The SEL-2488 receives Global Navigation Satellite System (GNSS) time signals and distributes precise time via multiple output protocols, including IRIG-B and the Network Time Protocol (NTP). With an optional upgrade, the SEL-2488 can serve as a Precision Time Protocol (PTP) grandmaster clock, as defined by IEEE 1588. The advanced capabilities of the SEL-2488 make it well-suited for demanding applications, like synchrophasors, and for substations with multiple time synchronization requirements.

SEL-2407 Satellite-Synchronized Clock

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SEL-2401 Satellite-Synchronized Clock

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2401 2407 2488
Substation Time Automation
Industrial Time Automation
Synchrophasor Time Standard
Control Room Viewing
Recloser Timing Source
IEEE 1344/IEEE C37.118 Time Quality Testing
Time-Synchronized Event Reporting
Source for Time-Tagged SER
Meets Synchrophasor Accuracy Requirements
Demodulated IRIG-B Output(s)
Modulated IRIG-B Output(s)
GPS Satellite Tracking
Synchronized Pulse Output
High-Gain GPS Antenna and Feed Line +
14 mm (0.56 in) Tall Display
Meets IEEE C37.90 and IEC 60255 Surge and Environmental Standards
Force Time Quality Mode (For Testing)
Rack-Mount, Panel-Mount, or Wall-Mount Hardware
Universal Power Supply
ASCII Commands and Reports
Fiber Communications Port +
Standard Feature
+ Model Option