NBFU (Nestor Blown Fibre Unit) is a optical fibre cable for microduct installation by blowing or pushing.

Construction 

  • Optical fibres: Coloured single-mode fibres according to the ITU-T G.657.A1.
  • Buffer layer: UV cured polymer.
  • Outer sheath: Polyolefin compound. Colour of the sheath is blue. Nominal thickness is 0,2 mm.
  • Marking: Marking printed on the sheath at one meter interval: Cable type - year of manufacture - length marking.

NBFU is also available in a cardboard box, which makes installation easier. 

Below is a video on how to strip NBFU cable. If you don't see the video below, you can watch it on YouTube.

 

Size Nestor code Diameter Weight Length Drum
4xG.657.A1 FIN2012 L11375 1,2 mm 1,4 kg/km 2000 m P4
4xG.657.A1 (Box package) L11495 1,2 mm 1,4 kg/km 6000 m -
12xG.657.A1 FIN/TIA L11059 1,6 mm 2,7 kg/km 2000 m P4
12xG.657.A1 (Box package) L11665 1,6 mm 2,7 kg/km 4000 m -
2xG.657.A1 TIA L11057 1,2 mm 1,4 kg/km 2000 m -
4xG.657.A1 TIA L11058 1,2 mm 1,4 kg/km 2000 m -
8xG.657.A1 TIA L11072 1,5 mm 2,3 kg/km 2000 m P4
NBFU  
Maximum tension 2 and 4F: 10 N, 12F: 30 N
Crush strength with 100 mm plate 250 N
Temperature range in operation -40 to +60 °C
Temperature range during transport, storage -40 to +70 °C
Temperature range during installation -15 to +40 °C
Minimum bending radius, mm  During installation 60 mm, installed 40 mm
Reaction to fire (CPR) Fca