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Copper subscriber access cables
Underground
TK/BK-... x 4/0.8 PE4-ALT
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TK/BK-... x 4/0.8 PE4-ALT
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TK/BK-... x 4/0.8 PE4-ALT Signalisation and telecommunication Copper cablewith foam-skin insulation
Description

Preferential use

  • LF and ADSL Telecommunication networks
  • Swissnet RNIS up to 2 Mbits/s

 

 

Key-points

  • Conform to SBB/CFF/FFS 3001.52.1000 specification
  • Radial watertighness
  • Direct connection on dispatch pannel
  • Protection against electromagnetical perturbations
  • High transmission quality

 

 

Cable construction

  • Star quads wire assembly
  • Copper solid conductor (mm)
  • Foam-skin polyethylen insulation [PE4]
  • Concentrical quads assembly
  • Insulating belt
  • 0.8mm copper wire for electrical continuity
  • Composite aluminium and polyethylen outer sheath, black with two green strips and metering [ALT]

 

 

Colour code

quad a b c d
tracer quad white orange turquoise violet
tracer Direction white green turquoise violet
tracer Standard quad 1 white brown turquoise violet
tracer Standard quad 2 white grey turquoise violet

 

Other versions on request

  • Anti-rodent protection out of galvanized steel tapes and polyethylen sheath [CLT]
  • Traction armour out of galvanized steel flat wires with or without protection sheath [F/FT]
  • Halogenfree and non-fire propagating sheath according to IEC 60332-3/c [CLN/FN]

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Characteristics
Construction characteristics
Screen Longitudinal aluminium tape  
Insulation Premolded  
Conductor material Aluminium / Polyester tape  
Dimensional characteristics
Conductor diameter 0.8mm  
Electrical characteristics
Capacitance unbalance max. 380.0pF  
Insulation resistance 10GOhm.km  
Loop resistance, max. at 20°C 73.5Ohm/km  
Test voltage AC at 50hz conductor /conductor 2000V  
Test voltage AC at 50hz conductor/screen 2000V  
Mutual capacity at 800 Hz, nominal 40nF/km  
Maximum operating voltage 250V  
Characteristic impedance at 1 kHz 570Ohm  
Usage characteristics
Installation type Outdoor - Duct  
Minimum installation temperature -10°C  
Maximum operating temperature 60°C  
Water proof Radial  
Field of application Outdoor  

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