KSPP 1x4x0.9 (КСПП 1х4х0,9) high-frequency communication cable for interstation and subscriber communication lines with sealing by multi-channel transmission systems with temporal division of channels and pulse-code modulation with a transmission speed of up to 2048 kBit/s at a remote power supply voltage of up to 500 V direct current. Laying in soil that is not prone to displacement and in areas that are not characterized by an increased risk of damage by rodents. TU U 05758730.010-98.
The price is indicated for 1 m.
Supplied in bays of 500 m.
Construction:
• Conductive wire - copper wire Ø 0.9.
• Conductor insulation - polyethylene (PE), continuous.
Four insulated wires are twisted into a quad. In a quad, two cores located diagonally form a working pair. The insulation of the wires of one pair is natural, the other pair is blue or other, different from natural.
• Cordel (central element) - PE.
• Belt insulation - PE, imposed by the extrusion method.
• The screen is an aluminum polyethylene tape laid longitudinally. A tinned copper wire Ø 0.4 mm is laid lengthwise under the screen.
• Shell – light-stabilized PE.
Features:
• Main technical and operational characteristics:
- Operating temperature range: from -50 °C to +50 °C
- Temperature range of laying and installation: from -10 °C to +50 °C
- The bending radius during installation is at least 15 cable diameters
- The minimum service life of the cable is 15 years
• Diameter of current-conducting wires, mm, nom. 0.9
• Electrical resistance of current-conducting conductors to direct current, Ohm/km, no more than 28.4
• Ohmic asymmetry calculated for a length of 750 m, Ohm no more than 1.0
• The electrical resistance of the insulation to direct current, MΩ·km, is at least 15,000
• Operating capacity from 0.8 to 1.0 kHz, nF/km, nom. 35.0±3
• Electrical resistance of insulation of direct current sheath, MΩ·km, at least 5.0
Transient attenuation between cable circuits at the near end (see note), dB, not less than 59
• Protection between cable circuits at the far end (see note), dB, at least 45
• Note: recalculation for a length of 750 m, with an influencing digital signal in the form of a pseudo-random sequence at a transmission speed of 2048 kBit/s
• Estimated outer diameter of the cable, mm (reference) 12.2
• Estimated cable mass, kg/km (reference) 132
