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Precise Time Features

Precise TimingSEL-2401SEL-2404SEL-2407SEL-3400SEL-3401SEL ICONSEL-2488
Applications
Time Source for Substation 
Time Source for Industrial Applications 
Time Source for PMU (Synchrophasors IEEE C37.118.1-2011) 
Time Source for Recloser     
Time Source for Line Current Differential Protection 
Time Source for Traveling-Wave Fault Location 
Time-Synchronized Event Reporting 
Large-Distance Viewing 200 ft (61 m)     
Time Sources and Time Distribution
Demodulated IRIG-B Outputs (Quantity)116124+4Up to 8
Modulated IRIG-B Outputs (Quantity)  1   Up to 4
GPS Satellite Tracking  
GLONASS Satellite Tracking (Reference Only)      
Demodulated IRIG-B Input    
Synchronized Pulse Output   
Network Time Protocol (NTP) Server    
IEEE 1588 Precision Time Protocol (PTP) (With IEEE C37.238 Power System Profile)     
Satellite Signal Verification      
Features
Large, 76.2 mm (3.0 in) Tall LED Display     
14 mm (0.56 in) Tall Display    
Rack-Mount Hardware
Panel-Mount or Wall-Mount Hardware 
PCIe Integration Into Computer       
Universal Power Supply   
Dual, Redundant, Hot-Swappable Power Supplies     
Power Over Ethernet (PoE) Power Sourcing Equipment (PSE)      
Secure Web Interface for Configuration      
Serial Ports for Configuration    
User-Based Accounts     
TCXO Holdover  
OCXO Holdover      
Cable Delay Compensation for Time Outputs and Antenna    
Meets IEEE C37.90 and IEC 60255 Surge and Environmental Standards
Accuracy
Average Accuracy (ns) <100 <100 <100    <40
Peak Accuracy (ns) <500 <500 <500   <1000 <100

Standard Feature

Model Option/Accessory

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