Teleprotection / Digital Protection Signaling

Features and Highlights

• E1, 2.048Mbps, G.703 interface for transmission over 4-wire electrical links
• Unrivaled Speed, Security and Reliability
• Use in a Standalone, Point-To-Point Application
• Use as an integrated part of the VCL-MX Version 6, E1 Voice and Data Multiplexer solution over an SDH or PDH data network
• 1+1 Route / Path Protection when used as an integrated part of the VCL-MX Version 6, E1 Voice and Data Multiplexer solution over an SDH or PDH data network.
• Compact, standard 19-Inch Rack-mountable, 2U high chassis.
• Bi-directional Transmission of 8 command Inputs and 8 command outputs
• Full Duplex Operation
• Automatic loop test facility
• User programmable for Direct Tripping, Permissive Tripping and Blocking Protection Schemes
• Compliant with IEC 60834-1 standards
• IRIG-B / NTP Time Synchronization
• Available in 48V DC, 110V DC and 250V DC configurations.
• Available with E1 interface:
• 8 Command Teleprotection Terminal
• (8 Nos. Tx & Rx independent command inputs & outputs for providing interconnection with Power Protection Relays).
• Available power options: 48V DC, 110V DC, 250V DC.

Flexibility and User Programmability

• User programmable command holding delay for error resistant command inputs
• User programmable command sampling rate for error resistant command transmission
• Less than 2ms command transfer time
• Less than 4ms relay operating time
• Less than 6ms back-to-back operating time (including relay operating time)

Event and Alarm Logging

• Time-Stamped Alarm Logging
• Time-Stamped Event Logging.

Management and Monitoring

• RS232 serial, USB serial interfaces for local terminal access
• 10/100BaseT Ethernet Interface for remote access over an IP network
• Encrypted Password Protection
• Telnet - Remote access over IP links
• SSH - Secured remote access using Secure Shell Protocol over IP links
• SNMP Traps and NMS for real time remote monitoring and management over an IP network
• Automatic Link Test feature – link testing at user programmable periodical intervals
• Visual I/O status – LED Display.

Reliability

• Advanced Communication Protocols to ensure reliable transmission of commands
• Power Supply Immunity to withstand impulse surges and transients of up to 10,000 Volts
• High Quality Relays – withstands voltage 10 kV between coil and contacts (1.2 × 50 μþs)
• Maximum Switching Voltage: 400V AC or 300V DC
• Optoisolated Command Inputs
• Optoisolated Relay Outputs
• Relays - Mechanical: 10,000,000 operations min. (at 18,000 operations/hour).

Error Detection and Coding

• Line Code Violation Detection
• LOS Detection
• Block Command Encoding as per IEEE C37.94.