Line Traps

Line Traps form part of a Power Line Carrier communication scheme. Their function is to present a high impedance at the carrier frequency band while introducing negligible impedance at the power frequency itself.

Line Traps are inserted into high voltage AC transmission lines to prevent undue loss of carrier signal power (40 kHz to 500 kHz) under all power system conditions.
Line Traps for Power Line Carrier (PLC) communication systems represent a significant application segment for high voltage inductors. Power Line Carrier (PLC) is a common method of Power System Communication, such as teleprotection, voice and data communication. It has developed the reputation of being one of the most economical and reliable forms of communication and versatile in its application.

Line Trap

The main function of the Line Trap is to present a high impedance at the carrier frequency band while introducing insignificant impedance at the power frequency itself. The high impedance limits the attenuation of the carrier signal within the power system by preventing the carrier signal from being:

  • dissipated in the substation,
  • grounded in the event of a fault outside the carrier transmission path and
  • dissipated outside of the main transmission path.

 

Features

  • Low power losses due to use of specialty cables and encapsulated design
  • More than 50 years experience in design and manufacturing
  • Approved supplier for utilities and contractors worldwide
  • Designed to meet various technical specifications (ambient conditions, mounting, losses, …)
  • Designed to meet IEC standard 353, ANSI standard C93.3 or other international standards
  • 72 kV to 800 kV
  • 0.1 mH to 4.0 mH
  • 200 A to 6500 A
  • up to 180 kA peak short circuit rating