Кабели связи HYAC

HYAC communication cables Electrical Characteristics at 20°c: Conductor Diameter(mm)0.400.500.600.700.800.90Capacitance unbalance, pF/km(0.8kHz or1 kHz) Pair to Pair Individual maximum value for 10 pairs 250250200200200200 Maximum value for more than 10 pairs 250250200200200200Pair to ground Maximum value for 10 and more than 10 pairs 2630Maximum average value for more than 10 pairs 570570490490490490Voltage DC (for 3 seconds) Pair to Pair (V) 2000Pair to shield (V) 6000Max. Value DC resistance of conductor, Ω/km (20°c) 1489565.848.036.628.5Resistant unbalance Maximum average value (%) 1.51.51.51.51.51.5 Maximum value (%) 5.05.05.04.04.04.0Mutual Capacitance, nF/km (0.8 kHz or 1 kHz) Maximum value 10 pairs 58.0 More than 10 pairs 57.0Average value 10 pairs 52.0±4.0 More than 10 pairs 52.0±2.0Equal Level Far-End Crosstalk,db/km (150 kHz) Min. value of combination of pair to pair at random 58Average power (Each combination of basic unit of thirty pairs) ≥69Average power of the combination pairs in 12 and 13 pairs or 10 and 20 pairs ≥68Near-end Crosstalk loss, dB (1024kHz ) Length≥300m The lowest M-S Value of all the required 10 pairs-53; 12, 13 pairs-54; cable of 20 or 30 pairs or in the basic unit-58; between adjacent 12, 13 pairs-63; adjacent 25 units-64; between two opposite basic units or sub-units in super unit-70; between basic units or sub-units of different superunit-79. Minimum value of insulation resistant, MΩ·km(20°c) 10000 (DC voltage: 100 500v, 1 minute) Inherence attenuation, dB/km (20°c, 150kHz/1024kHz) More than 10 The average value no more than 12.1/27.3 9.0/22.5 7.2/18.5 6.1/15.7 5.7/13.7 4.9/11.5 10 pairs The average value no more than 110% of maximum average of the same type more than 10 pairs Variation of electrical characteristic Pairs number -≤100101-300Allowable -12