Teleprotection
Teleprotection With E1, 2.048Mbps, over an E1 / SDH link

The VCL-TP, Teleprotection is available with 1+0 and 1+1 E1, 2.048Mbps interface options and may be used in the following modes:

• 8 Binary Commands over E1, 2.048Mbps link
• 8 Binary Commands over Redundant, 1+1 E1 (2.048Mbps) transmission links with path protection / route protection and automatic failover
• 4+4 Binary Commands over dual E1 (2.048Mbps) transmission links in a point-to-multipoint application

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 over an SDH or PDH transmission network
• Optional - 1+1 Route / Path Protection with 2 x E1 Interfaces
• Optional - Point-to-Multipoint Application with 2 x E1 Interfaces
• 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 standard
• 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 and outputs
• Available power options: 48V DC, 110V DC, 250V DC.

Event and Alarm Logging

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

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 3ms relay operating time
• Less than 5ms back-to-back operating time (including relay operating time)

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 the IEEE C37.94 specifications