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Precise Time Features

Precise TimingSEL-2401SEL-2407SEL-3400SEL-3401SEL ICONSEL-2488

Applications
Time Source for Substation and Industrial Applications 
Digital Secondary Systems (Sampled Values)    
Time Source for Phasor Measurement Unit (IEEE C37.118.1-2011 Synchrophasors) 
Time Source for Recloser     
Time Source for Line Current Differential Protection, Traveling-Wave Fault Locating, and Time-Synchronized Event Reporting 
Network Time Synchronization Applications Using the Network Time Protocol (NTP)     

Time Sources and Time Distribution
Demodulated IRIG-B Outputs (Quantity) 1  6  12  4+ 4  9
Modulated IRIG-B Outputs (Quantity)  1     up to 4
Optional 10 MHz Frequency Outputs (Quantity)      6
GPS Satellite Tracking  
GLONASS Satellite Tracking (Verification Only)     
Satellite Signal Verification     
Demodulated IRIG-B Input   
Synchronized Pulse Output  
NTP Server     
IEEE 1588-2008 Precision Time Protocol (PTP) Input (With ITU-T G.8275.1 Telecom Profile)     
IEEE 1588-2008 PTP Output (With IEEE C37.238-2011/2017 Power System and IEC/IEEE 61850-9-3:2016 Power Utility Automation Profiles)    

Features
Large, 76.2 mm (3.0 in) Tall LED Display for Long-Distance Viewing (61 m [200 ft])     
14 mm (0.56 in) Tall Display   
Rack-Mount Hardware 
Panel-Mount or Wall-Mount Hardware 
Universal Power Supply    
Dual, Redundant, Hot-Swappable Power Supplies (High-Voltage or Low-Voltage)    
Power Over Ethernet (PoE) Power Sourcing Equipment (PSE)     
Parallel Redundancy Protocol (PRP) and Ethernet Failover Support     
Secure Web Interface for Configuration     
Serial Ports for Configuration    
User-Based Accounts    
TCXO Holdover  
OCXO or DOCXO, High-Stability Holdover     
Cable Delay Compensation   1
IEEE C37.90 and IEC 60255 Surge and Environmental Standards Compliance

Accuracy
Average Accuracy (ns) ±100  ±100     ±40
Peak Accuracy (ns) ±500  ±500    ±1,000  ±100

Standard feature

Model option/accessory

1 SEL-2488 includes antenna cable delay compensation

Literature

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Literature

Publications

Drawings