• Cable External Jellyfilled Screened Unarmoured 50Pr 0.5mm
  • Telephone Cable with cellular polyethylene insulation, jelly filled with petroleum jelly and a polyethylene coating.
  •  For use in the Local Distribution network.
  • Insulated conductors uniformly twisted together to form a pair.
  • The water resistant filling compound is applied to the air spaces within the cable core to provide the water-proofnes
  •  Wrapping is applied over the cable core.
  •  A flat aluminium foil coated with copolymer on both sides is applied longitudinally over the core covering as screen.
  •  Black linear-low density polyethylene compound is extruded over the screen.

Physical Description

Conductors

Solid annealed bare copper conductors conforming to CCITT Yellow

Book Vol. III – 2-G.541 b article, IEC 28 and ASTM B3

Insulation

Foam-skin polyolefi­n conforming to ASDM D1248 to BS 6234 Type 03

Cable Assembly

Twisted pairs, cabled into sub-units, cabled in a circular form

Color Code

As indicated below

Filling

Compound

Water resistant fi­lling compound, applied to the gaps between the pairs

Tape wrap

Non hygroscopic polyester tape, wrapped with 30% overlap

Identi­fcation

tape

A suitable tape, durably marked with the manufacturer’s name, year of manufacture and type of cable is placed under the core covering

Flooding

compound

Water resistant ‑flooding compound, applied between the core wrap and the aluminum foil

Screen ( Shield)

Copolymer coated aluminum foil having thickness of 0.3mm, bonded to the outer jacket, conforming to ASTM B736

Outer Jacket

Black PE compound

 

Mechanical Parameters of basic conductors

Nominal Conductor Diameter (mm)

0.5

Maximum Conductor Diameter (mm)

0.51

Minimum Conductor Elongation, %

15

Insulated Conductor diameter (mm)

0.9

Insulation ultimate tensile force minimum (N)

2

 

Electrical Properties

DC resistance @20˚C Ohm/km Maximum Average

91

DC resistance @20˚C Ohm/km Maximum for 1% of cases

96

Mutual Capacitance nF/km, max Average

53

Mutual Capacitance nF/km, max for 1% of cases

60

Pair to pair capacitance unbalance, pF max

275

Insulation Resistance, 500V DC Minimum Mohm.km

1500

 

Colour codes of unit

Pair No

Colour of conductor insulation

 

A – wire

B – wire

1

White

Blue

2

White

Orange

3

White

Green

4

White

Brown

5

White

Grey

6

Red

Blue

7

Red

Orange

8

Red

         Green

9

Red

Brown

10

Red

Grey


Colour codes of tape lappings, Unit

 

1

Blue

2

Orange

3

Green

4

Brown

5

Grey

6

White

7

Red

8

Black

9

Yellow

10

Violet

 

Colur scheme, Concentric

1

2

3

4

5

6

7

8

9

10

11

12

13

Pair
Number

1

2

3

4

5

Last

Wire

A

B

A

B

A

B

A

B

A

B

A

B

Cable

 

 

 

 

 

 

 

 

 

 

 

 

5 pairs

Orange

White

Red

Grey

Blue

Brown

Red

Grey

Green

Black

 

 

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Cable External Jellyfilled Screened Unarmoured 50Pr 0.5mm

  • AED 13.97


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