1P*24AWG 机站线测试要求和方法 |
Spec 规格 | 1P×24AWG | Length | 305m | Temperation 测试温度 | 20℃ | |
No. | Test items 检测项目 | Technical standard 技术指标 | Test method 测试方法 |
1 | Conductor dia 导体直径 | 0.511±0.005mm | measured by digital micrometer 用数字千分尺测 |
2 | Conductor elongation 导体伸长率 | ≥25% 250mm | sample length 250mm, test speed 50mm/minute试样长度250mm，拉伸速度为50mm/分钟 |
3 | Insulation thickness 绝缘厚度 | average value:0.185-0.215mm 平均值：0.185-0.215mm | measured by microscope 用读数显微镜测 |
4 | Insulation elongation 绝缘伸长率 | ≥300% | sample length 36mm, test speed 50mm/minute 试样长度36mm，拉伸速度为50mm/分钟 |
5 | Twist distance 绞距 | ≤150mm/3m | sample 3m, twist distance≤150mm,measured by ruler 试样为3m，每个绞距≤150mm，用直尺或卷尺 |
6 | Jacket thickness 护套厚度 空心护套 | average value:≥0.381mm 平均值：≥0.381mm | measured by microscope 用读数显微镜测 |
Outer diameter | 3,4mm ± 0,1mm | | | |
7 | PVC jacket elongation PVC护套伸长率 | ≥200% | sample length 100mm, test speed 50mm/minute试样长度100mm，拉伸速度为50mm/分钟 |
8 | Conductor resistance 导体电阻（20℃时） | 180 ohm/km a pair 180 ohm/km一对 | |
9 | Mutual capacitance 共同电容 | 52.0 nF/km ± 4 | |
10 | Insulation resistance 绝缘电阻 | ≥2000ohm·km 250V-500V/1min | |
11 | Attenuation（20℃） 衰减（20℃时） | 150KHZ | ≤7.5dB/km | |
772KHZ | ≤16.5dB/km | |
1MHZ | ≤18.5dB/km | |
12 | Conductor Insulation Colors | red / gren | | | | |
13 | Cable Jacket Color | As customer need | | | | |
14 | Cable Jacket Marking | As customer need | | | |
15 | Packing Option | As customer need | | | | |