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Application: Sheath Marking: Printed in White Ink, at Each Meter Interval

This document provides specifications for telephone cables suitable for VF transmission, digital systems, and local post office and industrial networks. It describes the cable construction including a solid copper conductor, foam PE insulation, twisted copper pairs, a cable core with jelly filling, an aluminum moisture barrier tape, and a black PE sheath. Color codes are provided for the insulated conductors and tape wrappings. Properties listed include resistance, insulation resistance, capacitance, temperature range, and minimum bending radius. The document also specifies cable sizes and the corresponding sheath thicknesses and outer diameters.

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78 views2 pages

Application: Sheath Marking: Printed in White Ink, at Each Meter Interval

This document provides specifications for telephone cables suitable for VF transmission, digital systems, and local post office and industrial networks. It describes the cable construction including a solid copper conductor, foam PE insulation, twisted copper pairs, a cable core with jelly filling, an aluminum moisture barrier tape, and a black PE sheath. Color codes are provided for the insulated conductors and tape wrappings. Properties listed include resistance, insulation resistance, capacitance, temperature range, and minimum bending radius. The document also specifies cable sizes and the corresponding sheath thicknesses and outer diameters.

Uploaded by

Jason Secret
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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CW 1128/1179

Application
Telephone cables for VF transmission and digital systems, local networks for post office and industrial
areas, cables are suitable for direct burial and installation in ducts.

Specification
Gen. to BT CW 1128/ 1179 (APL screened cables)

Description
1- Solid plain copper conductor, 0.4 / 0.5 / 0.6 / 0.63 / 0.9 mm
2- Foam PE insulation
3- Insulated conductors twisted into pairs
4- Pairs are stranded into units or cable core
5- Cable core filled with jelly and covered with PET tape
6- One side copolymer coated aluminium tape Moisture Barrier
Thickness of aluminium tape: nom. 0.150 mm
Thickness of copolymer coating: nom. 0.050 mm.
7- Black PE

• Sheath marking: printed in white ink, at each meter interval:


- Name of manufacturer and year of manufaturing
- Cable type (number of pair and conductor size)
- Length marking

Colour code
The colours of the insulated conductors (according to colour chart in IEC 304 standard);
Cabling Cabling
Elements a-wire b-wire Elements a-wire b-wire
1 WHITE BLUE 6 RED BLUE
2 WHITE ORANGE 7 RED ORANGE
3 WHITE GREEN 8 RED GREEN
4 WHITE BROWN 9 RED BROWN
5 WHITE GREY 10 RED GREY

The colours of the tape lappings;


Unit No. Colour of tape Unit No. Colour of tape
1 BLUE 6 WHITE
2 ORANGE 7 RED
3 GREEN 8 BLACK
4 BROWN 9 YELLOW
5 GREY 10 VIOLET

The colours of 50 & 100 Pair Units in CENTRE & LAYERS


First Unit RED
Intermediate Units NATURAL
Last Unit GREEN

Customer- Project Type of Document Doc. No. Date. Rev. Page


Technical Specification 05-TS-163 Sep 05 0 1/2
CW 1128/1179

Properties
Conductor Diameter (mm)
0,4 0,5 0,6 0,63 0,9

Max. avg. conductor resistance (at 20°C) (Ω/km) 143 91 63 58 28

Min. Insulation resistance (at 20°C) 1 500 MΩxkm

Mutual capacitance (nF/km)


Max. Average 56 56 42 56 59
99 % of all values 64 64 46 64 65

Capacitance Unbalance
Two pair cable 800 pF/500 m
All other sizes 275 pF/500 m

Temperature range
during installation - 0°C to +50°C
during operation up to +70°C

Min. Bending radius 15 x outer diameter

Cable Size 0.4mm 0.5mm 0.63mm


Sheath Thick. (mm) Appr. Outer. Dia. (mm) Sheath Thick. (mm) Appr. Outer. Dia. (mm) Sheath Thick. (mm) Appr. Outer. Dia. (mm)
5 Pr 1x5 - - 1,6 7,8 1,6 8,6
10 Pr 1x10 1,6 8,2 1,6 9,1 1,6 10,6
20 Pr 4x5 1,6 10,1 1,6 11,3 1,6 13,4
25 Pr 5x5 1,6 10,8 1,6 12,2 1,6 14,5
50 Pr 5x10 1,6 13,8 1,6 15,7 1,7 19,1
100 Pr 2x10 8x10 1,6 17,9 1,7 20,8 1,8 25,6
200 Pr 4x50 1,7 23,9 1,7 27,8 2,0 34,8
250 Pr 5x50 1,7 30,4
300 Pr 1x50 5x50 1,7 28,3 1,8 33,3 2,1 41,8
400 Pr 2x50 6x50 1,8 32,2 1,9 38,0
600 Pr 1x100 5x100 1,9 38,7 2,1 45,9

Note: 1) The thicknesses are minimum average wall thicknesses (including aluminium tape)
2) One spare pair for each unit to be used for the cables above 100 pair

Customer- Project Type of Document Doc. No. Date. Rev. Page


Technical Specification 05-TS-163 Sep 05 0 2/2

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