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TPPep
Urban Telecom Cable
used in
local telecom networks
in normal conditions
Number of
pairs: from 5 to 600
Wire diameter: 0.4, 0.5, 0.64,
0.7
Cable is produced according to GOST ¹Ð 51311-99 and is intended
for laying in cable sewerage systems, collectors, shafts, along walls of
buildings and suspension on air telecom lines. Certificate of conformity of
Ministry of Telecommunications is available ¹Ä-ÊÁ-0751
Cable has improved
electrical parameters (ohm asymmetry is less than 2 per cent), which allow to
use it in digital data transmission networks.
· Cable design
· Electrical parameters
· Sprending system
· Wire coloring system
Cable design |
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1. Wire: annealed copper
wire.
2. Isolation: foam-skin or special solid
polyethylene.
3. Group: two or four isolated
wires, sprended into pairs or quands.
4.
Sprending: elementary units 10õ2 (5õ4). Main units 50õ2 (25õ4) or
100õ2 (50õ4). Cable core is made by sprending of main units.
5. Polyester isolation: insolative polyester
tape.
6. Aluminium screen:
Polyethylene-covered aluminium screen is put over polyester isolation
along the cable.
7. Sheath: Light-stabilized
polyethylene, stable to climate influences.
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Electrical parameters, +20° Ñ |
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Electrical
resistance to direct current
| Wire diameter |
Electrical resistance to direct current |
| 0.40 mm |
139.0 + 9.0 Ohm per 1 km |
| 0.50 mm |
90.0 +5.9 -6.0 Ohm per 1 km |
| 0.64 mm |
55.0 + 3.0 Ohm per 1 km |
| 0.70 mm |
45.0 + 3.0 Ohm per 1
km |
Capacity: 45 + 5 nF per 1
km
Ohm asymmetry: not more than
2%
Isolation Resistance, calculated for 1 km of
cable:
For 100% of values - not more than 6500 MOhm
Äëÿ 80% of
values - not more than 8000 MOhm
Electrical
strength:
Wire/wire - 1500 V, 1 min, direct current
Wire/screen
- 750 V, 1 min, direct current
Sprending system |
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| Number of pairs |
10 |
20 |
30 |
50 |
100 |
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| Sprending |
2+8 |
2õ10 |
3õ10 |
5õ10 |
10õ10 |
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| Number of pairs |
200 |
300 |
400 |
500 |
600 |
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| Sprending |
4õ(5õ10) |
6õ(5õ10) |
8õ(5õ10) |
10õ(5õ10) |
12õ(5õ10) |
Wire coloring system |
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| Colors of wires in 10-pair
unit |
Color of elementary unit
sprending tape |
| Ïàðà |
Color of wire À |
Color of wire B |
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Elementary unit number in the main unit |
Tape color |
| 1 |
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1 |
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| 2 |
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2 |
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| 3 |
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3 |
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| 4 |
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4 |
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| 5 |
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5 |
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| 6 |
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6 |
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| 7 |
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7 |
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| 8 |
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8 |
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| 9 |
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9 |
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| 10 |
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10 |
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