Solid PE Insulated & LAP Sheathed Air Core Cables to IEC 60708

Solid PE Insulated LAP Sheathed Air Core Cables to IEC 60708 1

Solid PE Insulated LAP Sheathed Air Core Cables to IEC 60708 2

Application The  cables  are  designed  for  use  in  access  or  trunk  networks,  from  telephone exchange to subscriber area. The cables are suitable for installation in ducts, direct burial in the ground and also for aerial installation with integral suspension strand. An armoured option is offered for direct burial installations. A figure-8 self support option is offered for aerial installation
Standards IEC 60708
Conductors:  Solid annealed bare copper, 0.4/0.5/0.6/0.8mm as per BS 6360/IEC 60228 Class 1
Insulation:  Solid polyethylene as per IEC 60708/BS EN 50290-2-23/BS 6234/ASTM D 1248/NFC 32-060/VDE 0207
Twisted Pairs:  Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk
Cabling Element: Pairs or Quads
Cable Core Assembly: Cables with 100 pairs or less are composed of 10-pair sub-units; cables with over 100 pairs are composed of 50 or 100-pair units. Any extra pairs form a separate unit. Units are identified by colour coded binders. Standard construction is per IEC 60708 in 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 (0.15mm) coated with PE-copolymer on one or both sides is applied longitudinally with overlap over the cable core to provide electrical shielding coverage and ensure a barrier against water vapor. In cables with more than 200 pairs, the aluminum tape may be corrugated for improved cable flexibility
Sheath:  Black low density polyethylene as per BS 6234/IEC 60708/ASTM D 1248, being able to withstand exposure to sunlight, temperature variations, ground chemicals and other environmental contaminants
Ripcord: Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal
Spare Pairs (optional): Spare pairs may be incorporated in large pair cables
Continuity Wire (optional): Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen
Optional Construction
Armoured Cable: Steel wire armour or corrugated steel tape armour is applied over an optional inner polyethylene sheath.For steel tape version, the steel tape is 0.2/0.5mm thick, being coated with a PE copolymer and applied with an overlap. An outer polyethylene sheath is applied over the armour
Self-Support Cables Per CW 1252. A 7-strand galvanized steel strand is used as support wire. Black polyethylene sheath covers both core and support wire in a figure-8 construction

Electrical Properties  

Nominal Conductor Diameter

mm

0.4

0.5

0.6

0.8

Conductor Gauge Size

AWG

26

24

-

20

Conductor Size

mm2

0.126

0.196

0.283

0.5

Maximum Average Conductor Resistance @20°C

Ω/km

143

91

63

34.6

Minimum Insulation Resistance @500V DC

MΩ.km

5000

5000

5000

5000

Maximum Average Mutual Capacitance @800Hz

nF/km

53

53

56

59

Maximum Individual Mutual Capacitance @800Hz (for 99% cases)

nF/km

60

60

60

64

Maximum Individual Capacitance Unbalance @800Hz pair-to-pair

pF/500m

250

250

250

160

Maximum Individual Capacitance Unbalance @800Hz pair-to-pair (for 95% cases)

pF/500m

150

150

150

100

Maximum Individual Capacitance Unbalance @800Hz pair-to-ground

pF/500m

1700

1700

1700

1700

Maximum Individual Capacitance Unbalance @800Hz pair-to-ground 

pF/500m

1000

1000

1000

1000

(for 95% cases)

Maximum Conductor Loop Resistance @20°C

Ω/km

300

192

130

73

Impedance @1KHz

994

796

665

500

Impedance @100KHz

147

134

127

124

Impedance @512KHz

120

118

117.5

116.5

Impedance @1MHz

117

115

114.5

113.5

Maximum Average Attenuation @0.8KHz

dB/km

1.64

1.3

1.1

0.9

Maximum Average Attenuation @1KHz

dB/km

1.68

1.35

1.14

0.93

Maximum Average Attenuation @3KHz

dB/km

3.18

2.52

2.3

1.74

Maximum Average Attenuation @150KH

dB/km

11.4

8.3

7.2

5.7

Maximum Average Attenuation @772KHz

dB/km

24.3

19.4

17.4

13.1

Maximum AverageAttenuation @1000KHz

dB/km

27.1

21.4

18.5

13.7

Dielectric Strength

 

 

 

 

 

Conductor to Conductor (1min)

V DC

500

500

500

500

Conductor to Screen (1min)

V DC

1000

1000

1000

1000

Nominal Insulation Thickness

mm

0.175

0.2

0.25

0.3

Nominal Insulated Conductor Diameter

mm

0.75

0.9

1.1

1.4

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 IEC 60708 given in Colour Code Chart

Dimensions And Weight 

Solid PE Insulated & LAP Sheathed Air Core Cable to IEC 60708

Cable Code

Number

Nominal Sheath

Nominal Overall 

Nominal 

of

Thickness

Diameter 

Weight 

Pairs

mm

mm

kg/km

0.4mm Conductor, 0.75mm Insulated Wire

UE-TP708-2Y(L)2Y-10P04

10

1.5

9

71

UE-TP708-2Y(L)2Y-20P04

20

1.5

10

107

UE-TP708-2Y(L)2Y-30P04

30

1.5

11

143

UE-TP708-2Y(L)2Y-50P04

50

1.5

13

211

UE-TP708-2Y(L)2Y-70P04

70

1.5

15

278

UE-TP708-2Y(L)2Y-100P04

100

1.5

17

380

UE-TP708-2Y(L)2Y-150P04

150

1.5

21

548

UE-TP708-2Y(L)2Y-200P04

200

1.8

23

708

UE-TP708-2Y(L)2Y-300P04

300

1.8

28

1034

UE-TP708-2Y(L)2Y-400P04

400

1.8

31

1358

UE-TP708-2Y(L)2Y-500P04

500

2

35

1703

UE-TP708-2Y(L)2Y-600P04

600

2

38

2016

UE-TP708-2Y(L)2Y-800P04

800

2.5

43

2639

UE-TP708-2Y(L)2Y-900P04

900

2.5

46

2961

UE-TP708-2Y(L)2Y-1000P04

1000

2.5

48

3264

UE-TP708-2Y(L)2Y-1200P04

1200

2.8

52

3873

UE-TP708-2Y(L)2Y-1500P04

1500

2.8

58

4819

UE-TP708-2Y(L)2Y-1800P04

1800

3.2

63

5777

UE-TP708-2Y(L)2Y-2100P04

2100

3.2

68

6731

UE-TP708-2Y(L)2Y-2400P04

2400

3.5

72

7645

UE-TP708-2Y(L)2Y-2700P04

2700

3.5

76

8556

UE-TP708-2Y(L)2Y-3000P04

3000

3.5

80

9466