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Filled Telecommunication Cables |
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As per British Telecom spec. : CW 1128/1179/1198 |
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Application Range |
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Jelly filled Cables are meant for inter exchange connection and local network use. UPTL is manufacturing cables with conductor size 04 / 0.5 /0.63/ 0.9 mm multipairs upto 100 Pair Armoured / Unarmoured, Screened Unscreened cables. |
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Construction |
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| Solid Plain Annealed Copper Conductor Polythene Insulation Twisted into Pairs Stranded into units Units laidup, filled with Petroleum Jelly & Polyster taped Screen of Poly Al. Tape (optional) (CW : 1179) Polythene Sheathed Steil Wire Armoured Polythene Jacketed. |
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Electrical Characteristics at 20°C |
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| Conductor Size |
mm |
Nom. |
0.50 |
0.9 |
| Conductor Resistance for 1km. loop |
ms |
Max. |
184 |
60 |
| Resistance Unbalance |
% |
Max. |
2.5 |
2 |
| Insulation Resistance |
Mohm/Km |
Max. |
5000 |
5000 |
| High Voltage for 3 Sec |
DCKV |
Min. |
2.4 |
3.5 |
| Mutual Capacitance at 1000 Hz Avg. |
Pt/Mtr |
52.5 |
52.5 |
52.5 |
| Near and cross talk attenuation at 150 Khz min. |
db/Km |
Min. |
55 |
55 |
| Far and cross talk attenuation At 150 Khz min. |
db/Km |
Min. |
55 |
55 |
| Attenuation Avg. Value at 1 Khz |
db/Km |
Max. |
8.25 |
4.4 |
Capacitance Unbalance
(Pair to Pair) |
Avg. Pf/Km
Ind.pf.Km |
Max. Max. |
50
20 |
50
200 |
Capacitance Unbalance
(Pair to Ground) |
Avg. pf/Km
Ind. pf.Km |
Max.
Max. |
750
3000 |
750
3000 |
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