Analog-digital teleprotection system.

TPS-NU is a teleprotection device which allows to protect the power lines in a flexible, reliable and economic way. The device can be equipped with digital or analog line interfaces. As of digital interfaces, the operating principle is based on guard signals decoding and sending of a certain number of commands decoded using specific bit sequences. With regard to analog interfaces, the TPS-NU device is based on FSK (Frequency Shift Keying) operation.

technical features

  • Complete configurability of employment and priority of commands
  • Management of indipendent and/or simultaneous commands
  • Different protection schemes (intertripping, permissive underreach, permissive overreach and blocking) with dependability, security and transmission time compliant with IEC 60834-1
  • High hardware modularity
  • Subrack with backside connectors
  • Different digital/analogue line interfaces (optical fiber, E1 2 Mbit/s G.703, codirectional/ contradirectional 64 kbit/s G.703, 32/64 kbit/s V.11/X.21, analogue/ digital PLC, 2/4 copper wires, C37.94)
  • Up to 4 commands, commands redundancy and statistics
  • High programmability of the command parameters (i.e. software timers)
  • Set-reset command (continuous commands)
  • Alarms display and configurability
  • Events recording in a non-volatile memory (2048 events with 1 ms resolution)
  • Accurate alarms indications
  • Remote configuration and monitoring (only digital interfaces)
  • Terminal addressing to protect against channel crossovers in switched or routed networks (only digital interfaces)
  • Comprehensive self-test diagnostics
  • RS-232 interface or LAN interface for configuration and monitoring