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TPppZP
Urban Telecom Cable
used in
local telecom networks
in normal and humid
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-0162.
Certificate on the useful
cable type is available: Watertight telecom cable.
Cable has
improved electrical parameters (ohm asymmetry is less than 2 per cent), which
allow to use it in digital data transmission networks.
· Cable pecularities
· Cable design
· Electrical parameters
· Sprending system
· Wire coloring system
Cable pecularities |
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Foam-skin insulation provides improved electrical parameters
comparing to ordinary solid insulation.
· Special hydrophobic
compound fills not only inter-wire space but also the space between
longitudinal polyester isolation and aluminium screen.
Cable design |
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1. Wire: annealed copper
wire.
2. Isolation: foam-skin 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. Hydrophobic
compound: inter-wire space is filled by special hydrophobic
compound, which provides longitudinal hermetizaion of cable core.
6. Polyester isolation: insolative polyester
tape.
7. Insulative hydrophobic compound: space
between polyester isolation and aluminium screen is filled by hydrophobic
jelly, which prevents water penetration in case of damaged sheath.
8. Aluminium screen: Polyethylene-covered
aluminium screen is put over polyester isolation along the cable.
9. Sheath: Light-stabilized polyethylene, stable
to climate influences.
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Ýëåêòðè÷åñêèå ïàðàìåòðû êàáåëÿ, ïðè +20° Ñ |
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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: 50 + 5 nF per 1
km
Ohm asymmetry: not more than
2%
Isolation Resistance, calculated for 1 km of
cable:
not more than 5000 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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