High Frequency Communication Cables
Local communication cable high-frequency KSPZPB
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Application
The cable is designed for inter-office and subscriber communication lines with multiplexing transmission systems with time division of channels and pulse-code modulation with a transmission speed of up to 2048 kBit / s with a remote supply voltage of up to 500 V DC.
Laying in soils that are not subject to displacement, not characterized by increased corrosion hazard in relation to steel armor, in conditions of high humidity.
Typical design
Cable structure
1. Conducting vein - a copper wire of Ø 0,9 or 1,2 mm.
2. Core insulation - polyethylene (PE), continuous.
Four isolated cores are twisted into a four. In the four, two veins located diagonally form a working pair. The insulation of the cores of one pair is a natural color, the other pair is blue or another, different from natural.
3. Cordel (central element) - PE.
4. The free space between the cores in the core is filled with a hydrophobic aggregate.
5. Belt insulation - PE extruded.
6. Screen - aluminum foil applied longitudinally. A tinned copper wire Ø 0.4 mm is longitudinally laid under the screen.
7. Armor - steel laminated corrugated tape applied longitudinally with overlapping.
8. Shell - light stabilized PE.
Standards / TU
TU U 05758730.010-98
Execution options
Main technical and operational characteristics
| Operating temperature range: -50 ° C to +50 ° C | ||
| Temperature range for installation and installation: -10 ° C to +50 ° C | ||
| Bending radius during installation - at least 15 cable diameters | ||
| Minimum cable life of 20 years | ||
| Diameter of conductive conductors, mm, nom. | 0.9 | 1.2 |
| Electrical resistance of conductive veins to a direct current, Ohm / km, no more | 28.4 | 15.8 |
| Ohmic asymmetry, calculated for a length of 750 m, Ohm, not more than | 1.0 | 1.0 |
| Insulation resistance of conductors to direct current, MΩ • km, not less | 15000 | 15000 |
| Operating capacitance at a frequency of 0.8 to 1.0 kHz, nF / km, nom. | 35.0 ± 3 | 43.5 ± 3 |
| Electrical insulation resistance of the shell to direct current, MΩ • km, not less | 5.0 | 5.0 |
| Transient attenuation between cable circuits at the near end (see note), dB, not less | 59 | 59 |
| Security between cable chains at the far end (see note), dB, not less | 45 | 45 |
| Note: recalculation to a length of 750 m, with a digital influence signal | ||
| in the form of a pseudo-random sequence at a transmission rate of 2048 kBit / s |
Estimated outer diameter of the cable, mm (informative)
| Cable brand | 0.9 mm | 1.2 mm |
| 1x4x CSP ... | 13.2 | 13.2 |
Estimated weight of the cable, kg / km (informative)
| Cable brand | 0.9 mm | 1.2 mm |
| 1x4x CSP ... | 201 | 218 |
