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K23 Railway signalling cables
Home  >  > Signal and data transmission cables  > Telecom outdoor cables  > Signalling cables  > K23 Railway signalling cables

K23 Railway signalling cables
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K23 Railway signalling cables

Halogen free cables for remote controls and teletransmissions used in underground railway networks (Type K23)
Standards
International  IEC 60332-1; IEC 60754-1; IEC 60754-2; IEC 61034
National  NF C 32-070/C1; NF C 32-070/C2; NF F 55-623
Description

 

Preferential use

  • Remote controls and teletransmissions

 

Applications

  • Underground railway networks (Metro)

 

Key-points 

  • Halogen free
  • Flame retardant cables

 

Cable construction

  • Copper conductor wire of 0.6, 0.8, 1.0 and 1.2 mm.
  • Solid polyethylene insulation.
  • Four insulated conductors are twisted together to form a quad.
  • For 1 and 4 pair cables, conductors shall be twisted in pairs. 
  • Quads are stranded in helically laid concentric layers or units to form the cable core. 
  • Core wrapping with plastic tape(s) with overlapping. 
  • Moisture barrier with one aluminium polyethylene laminate tape, coated on the outer side with copolymer, longitudinally applied with an overlap, plus one continuity wire. 
  • Inner sheath with HFFRLS compound.
  • Armour with steel tape 
  • Outer sheath with HFFRLS compound.

 

Other versions on request

  • armour with galvanised steel tape
  • other sheath colors
  • Further special requests 

 

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Characteristics
Usage characteristics
Bending factor when installed 15(xD)  
Dynamic bending factor 15(xD)  
Fire retardant NFC 32070 C1, IEC 60332-3-24  
Flame retardant NFC 32070 C2  
Smoke density Low  

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Conductor diameter  mm
Number of pairs  
Outer Diameter  mm
Approximate weight  kg/m
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Select all Items Nexans ref. Name Conductor diam. (mm) nb pairs Outer Diameter (mm) Approx. weight (kg/m)
Make to order product 10215527 RW-K23-PE-ALH-CLH 112X2X0,6 BLACK 0.6 112 33.4 1.51
Make to order product 10215509 RW-K23-PE-ALH-CLH 112X2X0,6 ORANGE 0.6 112 33.4 1.51
Make to order product 10215528 RW-K23-PE-ALH-CLH 112X2X0,8 BLACK 0.8 112 37.7 2.14
Make to order product 10215524 RW-K23-PE-ALH-CLH 14X2X0,6 BLACK 0.6 14 15.1 0.35
Make to order product 10215504 RW-K23-PE-ALH-CLH 14X2X0,6 ORANGE 0.6 14 15.1 0.35
Make to order product 10215529 RW-K23-PE-ALH-CLH 14X2X0,8 BLACK 0.8 14 16.9 0.45
Make to order product 10215518 RW-K23-PE-ALH-CLH 14X2X1,0 BLUE 1.0 14 18.2 0.56
Make to order product 10215521 RW-K23-PE-ALH-CLH 14X2X1,0 NATURAL 1.0 14 18.2 0.56
Make to order product 10194352 RW-K23-PE-ALH-CLH 14X2X1,2 WHITE 1.2 14 21 0.74
Make to order product 10215510 RW-K23-PE-ALH-CLH 168X2X0,6 ORANGE 0.6 168 33.7 2.1
Make to order product 10206107 RW-K23-PE-ALH-CLH 1X2X1,2 WEISS 1.2 1 11 0.19
Make to order product 10185292 RW-K23-PE-ALH-CLH 20X2X1,2 WHITE 1.2 20 24.8 1.01
Make to order product 10215511 RW-K23-PE-ALH-CLH 224X2X0,6 ORANGE 0.6 224 43.2 2.61
Make to order product 10215512 RW-K23-PE-ALH-CLH 280X2X0,6 ORANGE 0.6 280 51.4 3.7
Make to order product 10215525 RW-K23-PE-ALH-CLH 28X2X0,6 BLACK 0.6 28 19.2 0.54
Make to order product 10215506 RW-K23-PE-ALH-CLH 28X2X0,6 ORANGE 0.6 28 19 0.55
Make to order product 10211463 RW-K23-PE-ALH-CLH 28X2X1,0 WHITE 1.0 28 23.4 0.93
Make to order product 10181536 RW-K23-PE-ALH-CLH 28X2X1,2 BLUE 1.2 28 27.6 1.27
Make to order product 10181512 RW-K23-PE-ALH-CLH 28X2X1,2 WHITE 1.2 28 27.6 1.27
Make to order product 10215877 RW-K23-PE-ALH-CLH 2X2X1,0 WHITE 1.0 2 11 0.2
Make to order product 10206109 RW-K23-PE-ALH-CLH 2X2X1,2 WEISS 1.2 2 12.4 0.25
Make to order product 10215513 RW-K23-PE-ALH-CLH 336X2X0,6 ORANGE 0.6 336 1 3.8
Make to order product 10215520 RW-K23-PE-ALH-CLH 38X2X1,0 WHITE 1.0 38 25.5 1.15
Make to order product 10215514 RW-K23-PE-ALH-CLH 392X2X0,6 ORANGE 0.6 392 55.9 4.3
Make to order product 10215522 RW-K23-PE-ALH-CLH 4X2X0,6 BLACK 0.6 4 14 0.21
Make to order product 10211461 RW-K23-PE-ALH-CLH 4X2X1,0 WHITE 1.0 4 13.7 0.29
Make to order product 10215533 RW-K23-PE-ALH-CLH 4X2X1,2 WHITE 1.2 4 15.8 0.37
Make to order product 10215526 RW-K23-PE-ALH-CLH 56X2X0,6 BLACK 0.6 56 25 0.9
Make to order product 10215508 RW-K23-PE-ALH-CLH 56X2X0,6 ORANGE 0.6 56 25 0.9
Make to order product 10215808 RW-K23-PE-ALH-CLH 56X2X1,0 NATURAL 1.0 56 31.8 1.67
Make to order product 10215807 RW-K23-PE-ALH-CLH 84X2X0,6 ORANGE 0.6 84 28.5 1.2
Make to order product 10215523 RW-K23-PE-ALH-CLH 8X2X0,6 BLACK 0.6 8 13 0.26
Make to order product 10215534 RW-K23-PE-ALH-CLH 8X2X1,2 WHITE 1.2 8 18.1 0.53
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Physical characteristics

Number 
of pairs 

Conductor 
diameter

   Sheath thickness min.

Max. external 
diameter

 

(mm)

internal

external

(mm)

2

0.6

1.0

1.0

10.5

4

0.6

1.0

1.0

14.0

8

0.6

1.0

1.0

16.5

14

0.6

1.0

1.2

17.5

20

0.6

1.0

1.2

18.5

28

0.6

1.0

1.4

21.0

38

0.6

1.0

1.4

21.5

56

0.6

1.0

1.4

23.0

84

0.6

1.0

1.6

28.0

112

0.6

1.0

1.6

30.5

168

0.6

1.0

1.8

38.0

224

0.6

1.0

2.0

44.0

280

0.6

1.0

2.0

51.0

236

0.6

1.0

2.0

57.0

392

0.6

1.0

2.0

58.5

448

0.6

1.0

2.2

67.0

784

0.6

1.0

2.2

90.5

896

0.6

1.0

2.2

102.5

2

0.8

1.0

1.0

11.5

4

0.8

1.0

1.0

15.5

8

0.8

1.0

1.2

17.5

14

0.8

1.0

1.4

20.5

20

0.8

1.0

1.4

23.0

28

0.8

1.0

1.4

24.5

38

0.8

1.0

1.6

26.5

56

0.8

1.0

1.6

32.0

84

0.8

1.0

1.8

39.0

112

0.8

1.0

1.8

40.5

2

1.0

1.0

1.0

12.0

4

1.0

1.0

1.2

17.5

8

1.0

1.0

1.4

20.5

14

1.0

1.0

1.4

23.5

20

1.0

1.0

1.6

25.0

28

1.0

1.0

1.6

29.0

38

1.0

1.0

1.6

31.5

56

1.0

1.0

1.8

38.5

84

1.0

1.0

2.0

46.5

112

1.0

1.0

2.0

51.5

1

1.2

1.0

1.2

14.0

2

1.2

1.0

1.2

14.5

4

1.2

1.0

1.4

20.0

8

1.2

1.0

1.4

24.0

14

1.2

1.0

1.4

25.0

20

1.2

1.0

1.6

29.0

28

1.2

1.0

1.6

31.5


Electrical characteristics

 

 

 

 

 

Characteristics

Unit

Diameter conductor  (mm)

 

 

 

0.6

0.8

1

1.2

 

 

 

 

 

 

 

1.

Conductor resistance

 

 

 

 

 

 

Maximum Average

Ohm/km

64

36

23

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Insulation resistance DC after 3 min of electrification


MOhm x km


5000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Mutual capacitance at 1000 Hz

 

 

 

 

 

 

Maximum values

 

 

 

 

 

 

-cable with 1 pair

nF/km

67

 

-cable with 4 pairs

nF/km

62

 

-other cables

nF/km

57.5

 

 

 

 

 

 

 

 

Maximum Average

 

 

 

 

 

 

-cables with 20, 28, et 38 pairs

nF/km

55

 

-cables over 38 pairs

nF/km

52.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Unbalance of capacity

 

 

 

 

 

 

k1  (pair/pair)

 

 

 

 

 

 

-Maximum Average

pF/500 m

90

 

-Maximum value (95 % of mesurements)

pF/500 m

260

 

 

 

 

 

 

 

 

k9-12  (quad to quad)

 

 

 

 

 

 

-Maximum Average

pF/500 m

45

 

-Maximum value (95 % of mesurements)

pF/500 m

130

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

DC dielectric strength (1 min)

 

 

 

 

 

 

Between conductors

V (DC)

1500

2000

3000

3000

 

Between conductors and screen

V (DC)

1500

1500

1500

1500

 

 

 

 

 

 

 


Arrangement of Cable Cores

Number of pairs in cable

Number of quads

1st layer

2nd layer

3rd layer

1

1 pair

-

-

2

1

-

-

4

4 pairs

-

-

8

4

-

-

14

1

6

-

20

2

8

-

28

4

10

-

38

1

6

12

56

4 x (7)

-

-

84

1x (7)

5 x (7)

-

112

4 x (14)

-

-

168

1 x (14)

5 x (14)

-

224

1 x (14)

7 x (14)

-

280

5 x (28)

-

-

336

1 x (28)

5 x (28)

-

392

1 x (28)

6 x (28)

-

448

4 x (56)

-

-

784

1 x (56)

6 x (56)

-

896

1 x (56)

7 x (56)

-


Identification Tapes

Unit Number

Colour of tape

                              

Unit Number

Colour of tape

1

White

                    

5

Black

2

Blue

            

6

Red

3

Yellow

             

7

Green

4

Brown

            

8

Violet


Colour code

Position of pair within layer

Colour of insulation

Pair 1

Pair 2

a-wire

b-wire

c-wire

d-wire

1er  (pilot)

black

natural

grey

white

2th...,  6th...,  10th...

blue

natural

grey

white

3th...,  7th...,  11th…

yellow

natural

grey

white

4th...,  8th...,  12th…

red

natural

grey

white

5th...,  9th...,  13th…

green

natural

grey

white

 
 

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