| 用于试验电流400A以下的铜导线 |
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| 试验电流范围 |
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导线尺寸 |
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| A |
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mm2 |
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| 0～8 |
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1 |
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| 8～12 |
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1.5 |
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| 12～15 |
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2.5 |
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| 15～20 |
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2.5 |
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| 20～25 |
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| 65～85 |
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25 |
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| 85～100 |
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35 |
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| 100～115 |
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40(35) |
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| 115～130 |
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50 |
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| 130～150 |
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50～60 |
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| 150～175 |
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70 |
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| 175～200 |
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95 |
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| 200～225 |
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95～100 |
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| 225～250 |
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120 |
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| 250～275 |
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150 |
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| 275～300 |
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185 |
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240 |
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| 对应于试验电流的铜导线的标准截面积 |
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| 额定电流值(A) |
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试验电流的范围(A) |
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N 电缆mm2 |
N 铜母排尺寸 mm |
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| 500 |
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400～500 |
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2 150(16) |
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2 30×5(15) |
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| 630 |
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500～630 |
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2 185(18) |
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2 40×5(15) |
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Bitmap |
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| 800 |
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630～800 |
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2 240(21) |
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2 50×5(17) |
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| |
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| 1000 |
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800～1000 |
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2 60×5(19) |
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| 1250 |
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1000～1250 |
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2 80×5(20) |
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| 1600 |
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1250～1600 |
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2 100×5(23) |
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| 2000 |
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1600～2000 |
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3 100×5(20) |
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| 2500 |
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2000～2500 |
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4 100×5(21) |
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| 3150 |
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2500～3150 |
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3 100×10(23) |
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| 电力电缆安装注意事项、使用特性及运行敷设条件 |
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| 1.电力电缆安装注意事项 |
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| 1.1 电缆与热力管道平行安装时应保持2m的距离。交叉时应保持0.5m。 |
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| 1.2 电缆与其他管道平行或交叉安装时要保持0.5m的距离。 |
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| 1.3 电缆直埋安装时，1～35kV电缆直埋深度应不小于0.7m。 |
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| 1.4 10kV及以下电缆安装时，相互净距离不小于0.1m，10～35kV不小于0.25m，交叉 安装时距离不小于0.5m。 |
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| 1.5 电缆敷设温度不底于0℃，弯曲半：多心电缆≥15(D+d)，单芯电缆≥20(D+d)(D 为电缆外径，d为导体外径)。 |
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| 1.6 kV及以上电缆接头 |
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| ① 安装电缆终端头时，必须剥除半导电屏蔽层，操作时不得损伤绝缘，应避免刀痕 及凹凸不平的情况，必要时用砂纸磨平；屏蔽端部应平整，并要把石墨层（颗粒 ）清除干净。 |
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| ② 塑料绝缘电缆端头铜带屏蔽和钢铠必须良好接地，对短线路也应遵循这相原则， 避免三相不平衡运行时钢铠端部产生感应电动势，甚至“打火”及燃烧护套等事 故。接地引出线要采用镀锡编织铜线，和电缆铜带连接时应用铬铁锡焊，不宜用 喷灯封焊，以免烧损绝缘。 |
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| ③ 三相铜带屏蔽应分别地与地线相连，注意屏蔽接地线和钢铠接地线应分别引出， 相互绝缘，焊接地线的位置应尽量靠下。 |
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| 1.7 对电缆端头和中间接头的基本要求：a.导体连接良好；b.绝缘可靠。推荐采用辐照交联热收缩型硅橡胶绝缘材料；c.密封良好；d.足够的机械强度，能适应各种运行条件。 |
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| 1.8 电缆端头必须防止水及其他腐蚀性材料的侵蚀，以防因水树引起绝缘层老化而导致击穿。 |
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| 1.9 电缆的装卸必须使用吊车或叉车，禁止平运、平放。大型电缆安装时须使用放缆车，以免电缆受外力损伤或因人工拖动而擦伤。 |
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| 1.10 电缆如因故不能及时敷设时，应将其放在干燥地方贮存，防止日光曝晒电缆端头进水等。 |
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| 注意：电线电缆安装应由熟悉电线电缆性能的安装人员或专职技术人员担任，如仍有不清事项，请向相关技术部门或宏亮电缆技术部咨询。 |
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| 2 电缆的使用特性及运行敷设条件 |
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| 2.1 额定电压0.6/kV聚乙烯绝缘电力电缆 |
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| ① 电缆导体的长期允许工作温度：≤70℃ |
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| ② 短路时（最长持续时间不超过5s）电缆的最高工作温度：160℃ |
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| ③ 电缆敷设后经受直流电压3.5kV/15min不击穿 |
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| ④ 在空气中敷设 |
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| a.单芯电缆平行敷设时的中心距离：185mm及以下为电缆直径的2倍：240mm2及以上 为90mm。 |
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| b.周围环境温度：30℃ |
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| c.不同环境温度下载流量的校正系数： |
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