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Telecommunication Cables

Telecommunication Cables

Orient twisted paired cables are best suited for telephone cabling applications. The conductor is made of solid annealed, electrolytic grade high conductivity bare copper. The conductor is insulated with special grade high-density polyethylene with different colours. The insulated cores are twisted with uniform lay to form pairs and are bunched together in such a manner so as to minimise cross talk. In 50 and 100 pair cables the units of 10 and 20 pairs respectively are identified with colour binders and stranded to form the laid up cable.

 

Construction Parameters 1 Pair 2 Pair 3 Pair 4 Pair 5 Pair 10 Pair 20 Pair 50 Pair 100 Pair
Conductor (Solid annealed bare copper) 0.4 mm diameter (nom.) & 0.5 mm diameter (nom.)
Insulation Material (0.4 & 0.5 mm dia.) High density polyethylene
Insulation Thickness (Average) (0.4 & 0.5 mm dia.) 0.17 mm 0.20 mm
Diameter of Insulated Conductor(Maximum) (0.4 & 0.5 mm dia.) 0.74 mm 0.92 mm

Colour Combination

Pair 1 White-Blue White-Blue White-Blue White-Blue White-Blue White-Blue White-Blue White-Blue White-Blue
Pair 2 White-Orange White-Orange White-Orange White-Orange White-Orange White-Orange White-Orange White-Orange
Pair 3 White-Green White-Green White-Green White-Green White-Green White-Green White-Green
Pair 4 White-Brown White-Brown White-Brown White-Brown White-Brown White-Brown
Pair 5 White-Grey White-Grey White-Grey White-Grey White-Grey
Pair 6 Red-Blue Red-Blue Red-Blue Red-Blue
Pair 7 Red-Orange Red-Orange Red-Orange Red-Orange
Pair 8 Red-Green Red-Green Red-Green Red-Green
Pair 9 Red-Brown Red-Brown Red-Brown Red-Brown
Pair 10 Red-Grey Red-Grey Red-Grey Red-Grey
Pair 11 Black-Blue Black-Blue
Pair 12 Black-Orange Black-Orange
Pair 13 Black-Green Black-Green
Pair 14 Black-Brown Black-Brown
Pair 15 Black-Grey Black-Grey
Pair 16 Yellow-Blue Yellow-Blue
Pair 17 Yellow-Orange Yellow-Orange
Pair 18 Yellow-Green Yellow-Green
Pair 19 Yellow-Brown Yellow-Brown
Pair 20 Yellow-Grey Yellow-Grey
No. of Unit 1 X 1 P 1 X 2 P 1 X 3 P 1 X 4 P 1 X 5 P 1 X 10 P 1 X 20 P 5 X 10 P 5 X 20 P
Colour of Unit Identification Binder 0.4 mm dia. & 0.5 mm dia.
Unit 1 Blue Blue
Unit 2 Orange Orange
Unit 3 Green Green
Unit 4 Brown Brown
Unit 5 Grey Grey
PVC Jacket
(0.4 mm dia. & 0.5 mm dia.)
FRPVC compound or as per requirement
Approx. Outer Diameter 0.4 mm dia. 2.4 3.1 3.5 3.9 4.3 6.2 8.4 12.3 16.8
Approx. Outer Diameter 0.5 mm dia. 2.75 3.5 4 4.7 5.5 8.2 10.5 15.2 20.4
Packing Length (mtrs) 0.4 mm dia. & 0.5 mm dia. 90 90 90 90 90 90 90 500 500
Electrical Parameters 0.4 mm dia 0.5 mm dia
Conductor Resistance (max.) ohms/km at 200C 145 95
Mutual Capacitance (max.) nf/km 50 50
Insulation Resistance in Air (min.) M-ohms/km 5000 5000
Capacitance Unbalance Pair to Pair (max.) pF/km 250 250

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