• Teleprotection -G.703 Co-Directional Electrical Interface

E1 Teleprotection Equipment - Digital Protection Signaling Equipment

Orion Telecom Offers Power Utility Solutions Oil & Gas Networks Solutions Railway & Metro Rail Solutions PTP IEEE-1588v2 GPS Primary Reference Clock Packet Optical Transport Multiplexers Teleprotection SCADA, FOTE, OLTE Digital Cross Connects Echo Cancellers IP/Ethernet over TDM 1+1 APS (Fail-Over) Solutions Monitoring Groomer Solutions


Teleprotection - E1
Product Overview

VCL-TP, E1 Teleprotection Equipment is an extremely rugged product has been designed to operate reliably even under the most demanding conditions and environment. The VCL-TP, Teleprotection Equipment offers up to 8, 2-way independent command channels which can be operated over an E1, 2.048Mbps interface option for transmission over E1 links.

VCL-TP, E1 Teleprotection Equipment may be used independently in a point-to-point application between two nodes connected over an optical fiber link, or it may be used as an integrated part of the VCL-MX Version 6, E1 voice and data multiplexer solution over SDH or PDH data networks.

Data Sheet (PDF)

Flyer (PDF)

Teleprotection Application Diagrams

Transmission interface options that are available include:

  • E1, 2.048Mbps interface option for transmission over E1 links.

Other Teleprotection options available are:

  • 64Kbps, G.703 co-directional digital data interface option for transmission over 64Kbps data links
  • IEEE C37.94 compliant Multi-Mode optical fiber interface for transmission over short-reach multi-mode optical fiber links
  • IEEE C37.94 modulation compliant Single-Mode optical fiber interface for transmission over long-reach, single-mode optical fiber links (≤ 40 KM, ≤ 80 KM, ≤ 120 KM, ≤ 150 KM)
  • Option of 1+1 redundant optical path protection / route protection

Features and Highlights

  • Unrivaled Speed, Security and Reliability
  • Use in a Standalone, Point-To-Point Application
  • Use as an integrated part of the VCL-MX V6 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 V6 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
  • IEEE C37.94 compliant Multi-Mode optical link interface option for short reach optical links
  • IEEE C37.94 compliant (modulation only) Single Mode optical link interface option for long reach optical links  (≤ 40 KM, ≤ 80 KM, ≤ 120 KM)
  • 64Kbps, G.703 co-directional interface option for transmission over 4-wire electrical links
  • 2.048Mbps, G.703 interface option for transmission over 4-wire electrical links
  • Available in 24V DC, 48V DC, 110V DC, 220V DC and 250V DC configurations.
  • Available with G.703 64Kbps, 4-Wire co-directional interface:
  • 8 Command Teleprotection Terminal 
  • (8 Nos. Tx & Rx independent command inputs & outputs for providing interconnection with Power Protection Relays).
    G.703 64Kbps, 4-Wire co-directional interface.
    Available power options: -24V DC, 48V DC, 110V DC, 220V DC and 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 5ms relay operating time
  • Less than 7ms back-to-back operating time (including relay operating time) in IEEE C37.94 Optical mode
  • Less than 7ms back-to-back operating time (including relay operating time) in 2.048Mbps, G.703, E1 interface mode
  • Less than 11ms back-to-back operating time (including relay operating time) in 64 kbps, G.703 Co-directional 4 wire data interface mode
Technical Specifications

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
  • Web Interface
  • 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.
  • Dry contact external alarm relay to connect an external alarm on an annunciator panel, which can be wired up for either NO or NC condition.

Reliability

  • Advanced Communication Protocols to ensure reliable transmission of commands
  • Power Supply Immunity to withstand impulse surges and transients of upto 10,000 Volts
  • High Quality Relays – withstands voltage 10 kV between coil and contacts (1.2 × 50 μþs)
  • Maximum Switching Voltage: 400 V AC or 300 V 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 C.37.94.

Application Diagram

Application # 1: Teleprotection over IEEE C37.94 Interface over SDH / PDH Network

Teleprotection over IEEE C37.94 Interface over SDH / PDH Network

Figure # 1 – Typical Application over an IEEE C37.94 Optical Channel, or E1 interface, or as an integrated part of the E1 PDH Voice & Data Multiplexer solution over an SDH or PDH data network.


Application # 2: Typical Application over an IEEE C37.94 compliant optical link

Typical Application over an IEEE C37.94 compliant optical link

Figure # 2 – Typical Application over an IEEE C37.94 compliant optical link, as an integrated part of the E1 PDH Voice & Data Multiplexer solution over an SDH or PDH data network.