SERIE 74

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PRESENTATION

Petroleum jelly filled cables for local distribution telecommunication networks, suitable for drawing into ducts or directly burried.

REFERENCE STANDARDS

UTE C 93-526 and UTE C 93-527-1

STRUCTURE

1- Conductors :

Conductors consist of solid copper having a diameter of 0.4, 0.6 and 0.8 mm

2- Insulation of conductors :

Conductors are insulated by a solid polyethylene layer.
Conductors having a diameter of 0.6 and 0.8 mm are insulated by a cellular polyethylene covered by a solid polyethylene layer (double insulated layer or foam skin). The thickness is such as the electrical requirements are met.

3- Stranding :
- Element of cabling: insulated conductors are assembled in Star Quads
- Cabling elements :
· Quads are assembled in concentric bundles having a capacity of 8 pairs, 14 pairs and 28 pairs.
· Cables with 56 pairs are assembled in basic bundles of 14 pairs
· Cables having a capacity higher than 56 pairs are assembled in basic bundles of 28 pairs

4- Core wrapping
The cable core is covered with a :
- A polyester tape
- A water blocking tape

5- Screen
On the cable core is applied a corrugated aluminum tape.

6- Drain wire
The Drain wire consists of tinned copper and has a diameter of 0.5 mm. It is set longitudinally under the metal tape and ensures the screen connection.

7- Outer sheath
The sheath consists of high density polyethylene. It is black and contains 2.5 0.5 mm of carbon black. It is complying with the European standards requirements EN 50290-2-24

8- Cable filling
The cable are fully filled with a high grade, high drop point, petroluem based jelly compound.

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