K23 Underground signalling cables
Description
Halogen free cables for remote controls and teletransmissions used in underground networks (Type K23)
Description
Halogen free cables for remote controls and teletransmissions used in underground networks (Type K23)
Standards
International : IEC 60332-1; IEC 60754-1; IEC 60754-2; IEC 61034National : 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
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 |
Docs and info
Physical characteristics
|
Number |
Conductor |
Sheath thickness min. |
Max. external |
|
|
|
(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 |
|
|
|||
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|
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|
|
|
|
|
|
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 |
|||
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|
|
|
|
|
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 |
|||
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
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 |
