Telephone Cables

Telephone cable
telephone cables are processed by high-speed state-of-the-art machinery. The conductor is made of pure electrolytic grade, super annealed, tinned copper and is insulated with good quality pvc. The cores are carefully twisted together with suitable lays and bunched together such that the cross talk is reduced. Also the cores may be helically wrapped with myler or polyester tape. A nylon ripcord is also provided in order to safely peel off the jacket without damage to the cores. The laid up and bunched cores are finally jacketed with pvc for indoor application.
drop wire
the conductor in self supporting drop wire is 0.5 mm made out of ec grade solid copper wire. This is pvc insulated and with fibre glass roving as strength member. The cable is used for landline connected from the pole to the subscriber end. "prestige" self supporting drop wire is made as per tec specification no. G/wir-03/02 july'99.
jumper wire
the jumper wire is made out of ec grade solid copper wire with 0.5 mm conductor dia. This is pvc insulated and two cores are twisted together. The cable is made as per tec specification no. G/wir-10/02 dec.'94.
telecommunication cables are highly required for multistoried building and commercial establishments by plants. There cables are manufactured confirming to itd specification. S/ws–118d, s/ws–113 b, bs 3573.
construction parameter cable type
2 pair, 3 pair, 4 pair, 5 pair, 10 pair.
Conductor diameter solid annealed bare copper, 24awg (approx. 0.5 mm)
insulation material high density polyethylene
insulation thickness avg. 0.2 mm
rip cord nylon
pvc jacket flame retardant pvc with low halogen content.
Approx. Overall diameter 3.50 4.20 mm 5.30 mm 6.00 mm 8.50mm mm
electrical parameter
conductor diameter 92.20 ohm / km at 20oc max.
Mutual capacitance 50 nf / km max.
Insulation resistance in air 10000m-ohm km
capacitance unbalance– pair to pair 250 pf / 100m max.
Capacitance unbalance – pair to ground 330pf / 100mmax.
Resistance unbalance 5% max.
no. & dia of wire no. Of pair min. Thickness of sheath unarmoured cable
max. Od approx. Net weight.
Mm mm mm kg / km
2/0.50 1 0.50 3.50 12.20
4/0.50 2 0.65 5.10 25.10
6/0.50 3 0.65 5.60 32.50
8/0.50 4 0.65 6.00 39.50
10/0.50 5 0.65 6.30 47.50
12/0.50 6 0.65 6.80 53.75
14/0.50 7 0.65 7.00 59.00
20/0.50 10 0.75 9.00 88.00
22/0.50 11 0.75 9.50 93.50
28/0.50 14 0.75 10.50 108.75
40/0.50 20 0.75 11.50 147.50