2 PAIR LEAD-IN CABLES​

  • Physical Dimension
  • Electrical Characteristics

Lead In Cable 2 Pair is used between the terminal box and the customer’s premises. These cables are based on Pakistan Telecommunication Company Limited specification.

Cable Constructions:     

       CONDUCTOR 

      Fully annealed high-quality solid copper conductor size 0.5mm

        INSULATION

      Colour high Molecular Weight solid high-Density Polyethylene compound

        COLOUR CODING:

      The insulated conductors twisted together into colour coded pair: 

         PAIRING

       Two colored insulated conductors are uniformly twisted together to form pair. The twisted length being specially designed to minimize the cross talk and capacitance unbalance.

         INNER SHEATH

       Inner Sheath of Polyethylene is used to fill up spaces between insulated conductors for the purpose of water blocking and give the core a round cross-section.

          ARMOURING

       The armouring shall consist of Aluminum Tape.

           Outer Sheath

        Black High Molecular Weight Low-Density Polyethylene Compound

 IDENTIFICATION

        The manufacturer’s Name year of Manufacturing and cable size shall be printed on the outer sheath of cable with Length Marking.

PHYSICAL DIMENSION

Conductor diameter

0.6mm

Number of

Pairs

Outer Diameter

mm

Nominal Weight per

KM (Approx)

Standard Length

Mtr

2

11.40

123.00

1000

ELECTRICAL CHARACTERISTICS

Conductor

0.6mm

Conductor Resistance at 20 ‘C (Ω/KM)

63 Ω/Km

Mutual Capacitance at 100 Hz (nF/Km)

52 nF +3

Capacitance Unbalance (pF/300M) (Pair-Pair)

45 nF+3

Maximum Average

25nF

Maximum Individual

100 nF

Insulation Resistance at 500 v DC (MΩ-Km)

5000 MΩ

High Voltage Test (Conductor-Conductor)

3.6 KV DC

Cross Talk Coupling Loss at 150 KHz

73 dB

Attenuation (dB/Km) 1 KHz

1.04 dB