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| Telphone Cables |
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| Multi Pair Indoor Cables |
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 Application： |
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| Generally used for indoor application, underground application or at places having risk of fire. |
| Construction： |
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Conductor
Solid annealed copper having the diameter of 0.5 and 0.6 mm.
Insulation
Color coded polyvinylchloride (PVC)
Cable Assembly
Pairs or quads, each having special lay length to minimize crosstalk and capacitance unbalance are assembled for making core.
Core Covering
A non-hygroscopic dielectric plastic tape having suitable overlap is applied longitudinally or helically over cable core.
Outer Jacket (Sheath)
Polyvinylchloride (PVC) is extruded over core covering.
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Conductor Diameter |
Number of Pairs
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Cable Diameter |
Approximate Net Weight
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Drum Length |
(mm) |
(mm) |
(kg/km) |
(m) |
10 |
9.8 |
114 |
1000 |
20 |
13.0 |
191 |
1000 |
0.5 |
30 |
14.4 |
255 |
1000 |
50 |
17.0 |
381 |
1000 |
100 |
22.9 |
708 |
1000 |
10 |
10.4 |
137 |
1000 |
20 |
13.9 |
235 |
1000 |
0.6 |
30 |
15.5 |
318 |
1000 |
50 |
18.4 |
482 |
1000 |
100 |
24.7 |
905 |
1000 |
Electrical Properties |
Conductor Diameter |
0.5 |
0.6 |
Conducctor Resistance (Ώ/km) |
at 20oC |
Maximum Average |
93.0 |
64.6 |
Mutual capacitance (nF/km) |
800Hz |
Maximum Average |
90 |
Maximum Individual |
120 |
Capacitance Unbalance (pF/500m) |
Between Pairs |
Maximum Individual |
300 |
Between Adjacent Quads |
Maximum Individual |
300 |
Insulation Resistance (Megaohm-km) |
200 |
500V DC |
Dielectric Strength |
Pair- Pair |
500 |
AC Voltage 1 Minute |
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