产品电气特性
项目Item |
单位Unit |
指标Index |
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单根导线直流电阻Single conductor DC resistance +20℃ |
Ω/km |
单丝直径Single dia. mm |
0.32 |
0.40 |
0.50 |
0.60 |
0.80 |
|
最大值Max. value |
236 |
148 |
95 |
65.8 |
36.6 |
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平均值 Average value≤ |
2.5 |
1.5 |
1.5 |
1.5 |
1.5 |
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每根绝缘导线与其余接地及屏蔽的绝缘导线间的绝缘电阻+20℃ DCP100-500V |
MΩ/km |
最小值Min. value |
10×103 |
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绝缘电气强度Insulation electric strength DC |
kV |
3s |
芯线之间Between the cores 2.0,芯线与屏蔽之间Between the core and shield 6.0 |
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1min |
芯线之间Between the cores 1.0,芯线于屏蔽之间Between the core and shield3.0 |
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工作电容Capacitance |
nF/km |
电缆线对数Pairs of cable |
10 |
>10 |
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最大值Max. value |
58.0 |
57.0 |
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平均值不大于average value less than |
≤52.0±4.0 |
≤52.0±2.0 |
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电容不平衡Capacitance Unbalance 线对与地之间电容不平衡Capacitance Unbalance between pair & ground |
pF/km |
电缆线对数Pairs of cable |
10 |
>10 |
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最大值Min. value |
250(200) |
250(200) |
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最大值Min. value |
2630 |
2630 |
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固有衰减Inherent attenuation |
dB/km |
单丝直径Single dia. mm |
0.32 |
0.40 |
0.50 |
0.60 |
0.80 |
|
平均值 Average value≤ |
16.8 |
12.1 |
9.0 |
7.2 |
5.7 |
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平均值 Average value≤ |
33.5 |
27.3 |
22.5 |
18.5 |
13.7 |
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近端串音衰减 Proximal end crosstalk attenuation |
dB |
10对电缆内线对间的全部组合All combination of 10pairs extension cable |
不小于53 |
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12对、13对子单位内线对间的全部组合All combination of 12/13pairs extension units |
不小于54 |
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20对、30对电缆或基本单位内线对间的全部组合All combination of 20/30pairs extension units & cables |
不小于58 |
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相邻12对、13对子单位间线对的全部组合All combination of adjacent 12/13pairs extension units |
不小于63 |
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相邻基本单位间线对的全部组合All pairs combination of adjacent pairs on the base unit |
不小于64 |
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超单位内两个相对基本单位和子单位或子单位间线对的全部组合All pairs combinations of two opposing base units in the extra unit & subunits or between subunits |
不小于70 |
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不同超单位内基本单位或子单位间线对的全部组合 |
不小于79 |
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近端串音防卫度 Proximal end crosstalk protection ratio |
dB/km |
任意线对组合最小值Min. value of any combination of pairs 58 |
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功率平均值不小于Average value of capacity not less than 69 |