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Cable Design
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Conductor
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Copper, round, massive and annealed
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Insulation
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Paper
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Element type
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Star quad
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Cable core lay-up
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Layer stranding
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Core wrapping
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Several layers of paper tapes
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sheathing
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Seamless pressed, smooth or corrugated aluminium tube
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Armouring (only AJ- type)
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Two layers of helically applied galvanized steel tapes
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Outer sheath
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PE sheathing, black
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Dimensions
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unit
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Conductor diameter
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mm
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0.9
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1.2
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1.4
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Cable size
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pairs
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from 6 to 96
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Standard delivery length
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m
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462
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Electrical characteristics
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unit
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0.9 mm
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1.2 mm
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1.4 mm
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Loop resistance
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max.
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Ohm/km
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56.6
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31.8
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23.4
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Mutual capacitance
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nominal
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nF/km
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34
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35
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36
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Insulation resistance
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min.
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GOhm x km
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10
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Dissipation factor at 800 Hz
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max.
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-
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0.005
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Capacitance unbalance at 800 Hz
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within quads, max., average value
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pF/425m
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70
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between quads, max. all values
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pF/425m
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170
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to ground, max. average value
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pF/425m
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1100
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Dielectric strength, AC, 1 min
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core/core
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V
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500
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core/screen
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V
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2000
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Operating voltage
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max.
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V
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225
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Transmission characteristics at 1024 kHz
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unit
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1.2 mm
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1.2 mm
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1.4 mm
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(150 Ohm)
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(173 Ohm)
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Attenuation
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dB/km
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8.5
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9.0
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9.5
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Near-end crosstalk between the quads of different
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transmission channels
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min.
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Near-end crosstalk for up to 4 quads
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dB
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64
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Near-end crosstalk from 5 to 8 quads
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dB
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55
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Far-end crosstalk
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dB at 425 m
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45
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EMC properties
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unit
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Reduction factor at 16,7 Hz
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min.
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Typical value between 70 ... 100 V/km
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-
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0,12...0,35 depending of cable type
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Reduction factor at 50 Hz
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min.
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Typical value between 200 ... 300 V/km
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-
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0,06...0,17 depending of cable type
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Mechanical properties
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unit
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Min. bending radius for cables with ...
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corrugated Al sheath with or without armouring
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-
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15 x D
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smooth Al sheath with armouring
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-
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30 x D
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smooth Al sheath without armouring
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-
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40 x D
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