Telephone Cables

 Foam Skin Insulated & LAP Sheathed Air Core/Jelly Filled Cables to DIN VDE 0816

Application

The cables are designed for use as connection between central offices. The cables are suitable for installation in ducts, direct burial in the ground and also for aerial installation with integral suspension strand. Jelly filled option is for subscriber’s cables installed underground or along the edge of pavement. An armoured option is offered for direct burial installations. A figure-8 self support option is offered for aerial installation.

Standards

• VDE 0816

 

 

 

Construction

Conductors
Solid annealed bare copper 0.6 and 0.8mm as per class 1 of VDE 0295/IEC 60228

Insulation
Foam Skin which is a composite polyethylene insulation made of an inner cellular layer and an outer solid skin 2YI1 type as per VDE 0207-2

Twisted Pairs
Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk

Cabling Element
Star Quads

Cable Core Assembly
4 Cores are twisted into star quad. 5 star quads are stranded into a basic unit. 5 or 10 basic units each are stranded into one main unit. The star quads are grouped in units and stranded in layers to form the cable core.Standard make up is per VDE 0816 in the Cable Make Up Diagram

Core Wrapping
One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap. These tapes furnish thermal, mechanical as well as high dielectric protection between shielding and individual conductors

Moisture Barrier
A layer of aluminium tape (0.2mm) coated with PE-copolymer on one or both sides is applied longitudinally with overlap over the cable core to provide 100% electrical shielding coverage and ensure a barrier against water vapor

Sheath
Black low density polyethylene type 2YM2 as per VDE 0207-3, being able to withstand exposure to sunlight, temperature variations, ground chemicals and other environmental contaminants Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal

Ripcord
Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal

Spare Pairs (optional)
Spare pairs may be incorporated for 200 and larger pair cables

Continuity Wire (optional)
Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen

Optional Construction

Jelly Filled Cable
The cable core interstices are filled with petroleum jelly to avoid longitudinal water penetration withinthe cable. The water resistant filling compound is applied to the air space between non-hygroscopic tape and shield, shield and sheath within the cable core

Armoured Cable
Steel Wire Armour or Corrugated steel tape armour is applied over an optional inner polyethylene sheath. For steel tape version, the 0.15mm thick steel tape is coated with a copolymer and applied with an overlap. An outer polyethylene sheath is applied over the armour

Type Codes

A- Outdoor Cable
02YS Foam Skin insulation
Continuous core filling
(L)2Y  Laminated sheath(copolymer-coated aluminium tape laminated to PE outer sheath)
SR  Corrugated steel tape
b Armouring
Messenger of galvanized steel wires
StIII Star quad in local cables
Bd  Unit-type stranding

 

 

 

 

 

 

Electrical Properties

Nominal Conductor Diameter

mm

0.6

0.8

Conductor Gauge Size

AWG

-

20

Conductor Size

mm2

0.283

0.5

Maximum Average Conductor Resistance @20°C

Ω/km

63

34.6

Minimum Insulation Resistance @500V DC

MΩ.km

5000

5000

Maximum Mutual Capacitance @800Hz      100% of all values nF/km

42

42

                                                         95% of all values nF/km

40

40

Capacitance Unbalance @800Hz pair-to-pair
    K1          100% of values max

pF/500m

800

800

                 98% of values max

pF/500m

400

400

    K9-12     100% of values max

pF/500m

300

300

                 90% of values max

pF/500m

100

100

Maximum Conductor Loop Resistance @20°C

Ω/km

130

73.2

Impedance @0.8KHz

664

500

Maximum Average Attenuation @0.8KHz

dB/km

0.91

0.68

Dielectric Strength 50Hz      

           Conductor to Conductor (2mins)

V AC

500

500

           Conductor to Screen (2mins)

V AC

2000

2000

Maximum Operating Voltage Peak Value

V

225

225

Nominal Insulation Thickness  (Air Core)

mm

0.25

0.3

                                        (Jelly Filled) mm 0.36 0.44
Nominal Insulated Conductor Diameter (Air Core) mm 1.1 1.4
                                                   (Jelly Filled) mm 1.32 1.68

 

 

 

 

 

 

 

 

 

 

 

 

Mechanical and Thermal Properties

Temperature range during operation (fixed state): -30°C – +70°C
Temperature range during installation (mobile state): -20°C – +50°C
Minimum bending radius: 10 x Overall Diameter (unarmoured cables);15 x Overall Diameter (armoured cables)

Colour Code
Standard colour code is per VDE 0816 given in Colour Code Chart

Dimensions And Weight
Foam Skin Insulated and LAP Sheathed Air Core Cable                 VDE CODE: A-02YS(L)2Y…x2x0.6/0.8mm StIII Bd

Cable Code Number
of
Pairs
Nominal Insulation
Thickness
mm
Nominal Sheath
Thickness
mm
Nominal Overall
Diameter
mm
Nominal
Weight
kg/km
0.6mm Conductor, 1.1mm Insulated Wire

TP816A-02YS(L)2Y-StIII-Bd-50P06

50

0.25

1.8

22.0

565

TP816A-02YS(L)2Y-StIII-Bd-100P06

100

0.25

2.0

28.0

960

TP816A-02YS(L)2Y-StIII-Bd-200P06

200

0.25

2.2

37.5

1785

TP816A-02YS(L)2Y-StIII-Bd-300P06

300

0.25

2.2

44.5

2545

TP816A-02YS(L)2Y-StIII-Bd-400P06

400

0.25

2.6

51.0

3370

TP816A-02YS(L)2Y-StIII-Bd-600P06

600

0.25

3.0

61.5

4855

TP816A-02YS(L)2Y-StIII-Bd-800P06

800

0.25

3.4

70.0

6315

TP816A-02YS(L)2Y-StIII-Bd-1000P06

1000

0.25

3.4

76.5

7850

TP816A-02YS(L)2Y-StIII-Bd-1200P06

1200

0.25

3.8

83.0

9390

0.8mm Conductor,1.4mm Insulated Wire

TP816A-02YS(L)2Y-StIII-Bd-50P08

50

0.3

1.8

25.0

840

TP816A-02YS(L)2Y-StIII-Bd-100P08

100

0.3

2.0

33.0

1500

TP816A-02YS(L)2Y-StIII-Bd-150P08

150

0.3

2.2

39.5

2165

TP816A-02YS(L)2Y-StIII-Bd-200P08

200

0.3

2.2

45.5

2825

TP816A-02YS(L)2Y-StIII-Bd-300P08

300

0.3

2.6

55.0

4145

TP816A-02YS(L)2Y-StIII-Bd-400P08

400

0.3

3.0

63.0

5475

TP816A-02YS(L)2Y-StIII-Bd-500P08

500

0.3

3.4

69.5

6750

TP816A-02YS(L)2Y-StIII-Bd-600P08

600

0.3

3.4

76.0

8090

TP816A-02YS(L)2Y-StIII-Bd-750P08

750

0.3

3.8

84.5

10065

 

 

 

 

 

 

 

 

 

 

 

 

 

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