22
TK (aerial)
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5.
TELECOMMUNICATION
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6. Steel wire messenger.8)
Specification: TDO 18/08
Application
» for basic phone services analogue and digital transmission systems
» for aerial use
Environmental conditions
Temperature ranges for laying and assembly –10 +60 °C
Operation and store temperatures –40 +70 °C
Permitted minimum bending radius min.km min.
3.
Description materials:
1..6; 0. Vss 250 250
Packing drums. 1. Laminated aluminium foil.
Transmission element each cores are twisted star quad, the quads are stranded units,
the units are stranded the cable core. Core insulation foam skin PE.x4 (0.
5. GΩ.
2. min. Copper wire. years
D
outside cable diameter
Electrical parameters (20 °C)
Conductor diameter 0. loop resistance Ω/km 130. 5
Mutual capacitance nF/km 42
Capacity unbalance k1
at 800 pF/500 800 300
Effective test voltage wire/wire 500 500
Effective test voltage wire/shield 2,000 2,000
Operating voltage max. outer jacket, black. Crepe paper.
4.0 72.8
Max..6 0. 10D
Cable lifetime min.0
Insulation resistance min
