HV/MV Equipment
Line Traps

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Line Traps
Light Weight, Flexible Mounting

Line traps are used in transmission and distribution networks around the world. Line traps are a key component in PLC (Power Line Carrier) systems used for remote control signals, voice communication, remote metering and control between substations in the electrical T&D network.

High voltage transmission lines are also used for transmitting carrier signals between 30 kHz and 500 kHz for remote control, voice communication, remote metering and protection and other applications, and are often referred to as PLC systems.

Line traps prevent transmission of these high frequency signals to unwanted directions without loss of energy at power frequency. Line traps are series-connected to the transmission lines, and are designed to withstand the rated power frequency current and the short circuit current to which the lines are subjected. OSD and MCD technology are available.

 

Characteristics
Specifications
Frequency Tuning

Characteristics

  • Up to 800 kV
  • Up to 5,000 A
  • 30-500 kHz frequency range
  • High short-circuit withstand capability
  • Mounting flexibility: vertical, horizontal or suspension
  • Extremely reliable tuning devices
  • Self-resonnance frequency greater than 500 kH
  • Fixed or adjustable tuning devices
  • Excellent cooling capabilities
  • Maintenance free
  • Air core, dry type
  • Outdoor use
  • Complaint with IEC and IEEE or equivalent standard

Specifications

I (A) Standard Isc (kA) / 1s Isc (kApeak) L (mH)
400 IEC I 10 25.5 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 16 41 0.1 0.2 0.32 0.5 1.0 2.0
630 IEC I 16 41 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 20 51 0.1 0.2 0.32 0.5 1.0 2.0
800 IEC I 20 51 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 25 64 0.1 0.2 0.32 0.5 1.0 2.0
1250 IEC I 31.5 80.5 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 40 102 0.1 0.2 0.32 0.5 1.0 2.0
1600 IEC I 40 102 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 50 127.5 0.1 0.2 0.32 0.5 1.0 2.0
2000 IEC I 40 102 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 50 127.5 0.1 0.2 0.32 0.5 1.0 2.0
2500 IEC I 40 102 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 50 127.5 0.1 0.2 0.32 0.5 1.0 2.0
3150 IEC I 40 102 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 50 127.5 0.1 0.2 0.32 0.5 1.0 2.0
4000 IEC I 63 161 0.1 0.2 0.32 0.5 1.0 2.0
IEC II 80 204 0.1 0.2 0.32 0.5 1.0 2.0
* Shaded rating not available with OSD

Line traps accoding to ANSI standard

I(A) Standard Isc (kA) / 2s Isc (kA peak) L (mH)
400 ANSI 15 38.5 0.265
800 ANSI 20 51 0.265
1200 ANSI 36 91.8 0.265
1600 ANSI 44 112 0.265
2000 ANSI 63 161 0.265
3000 ANSI 63 161 0.265
4000 ANSI 80 204 0.265
5000 ANSI 80 204 0.265
Other rating can be designed upon request.

Frequency Tuning

Line-Traps-drawing