产品标准 Standard
本产品按GB12706《额定电压35kv及以下铜芯、铝芯塑料绝缘电力电缆》标准生产。
The product is manufactured according to the stand of GB12706 or IEC,BS,DIN and ICEA upon request.
适用范围 Applications
本产品适用于工频额定电压0.6/1KV及以下配电网或工业装置中固定敷设之用。
The product is suitable for use in power distribution lines or fixed insta-llations with rated power-frequency voltage up to and including 0.6/1KV.
使用特性 Operating characteristics
工频额定电压Uo/U为0.6/1KV。
Rated power-frequency voltage Uo/U:0.6/1KV.
电缆导体的允许长期工作最高温度为70℃
Max.permissible continuous operating temperature of conductor: 70℃
短路时(最长持续时间不超过5s)电缆导体的允许最高温度:
导体截面 ≤ 300mm2 – 160℃;
导体截面 300 – 140>℃;
Max.short-circuit temperature of the conductor shall not excssd: (5smaximum duration).Cross-section of conducter ≤ 300mm2 – 160℃;
Cross-section of conducter > 300mm2 – 140℃, 电缆敷设时环境温度应不低于0℃。
The ambient temperature under installation should should not below0℃
电缆弯曲半径不小于电缆外径10倍。
The bending radius of a cable should not be less than 10 times of the cable diameter. 电缆的型号 Type of cable
在空气中敷设
1、单芯电缆平行敷设时中心距离:185mm2及以下为电缆直径的2倍;240 mm2及以上为90 mm。
2、周围环境空气温度:40℃
3、导体的长期最高工作湿度:70℃ In air
1、 The single – core cables are parallel laid , the distance between the cable center is 2 times of the cable diameter for cross – section area of conductor ≤185mm2 and 90 mm for cross- sectional area of conductor ≥240 mm2
2 Ambient air temperature : 40℃
3 Max.Contionous operating temperature of conductor : 70℃
不同环境温度下载流量的修正系数
Current rating factors for variation in ambient air temperatare
环境空气温度 Ambient air temperature20 ℃25 ℃30 ℃35 ℃40 ℃45 ℃
修正系数 Rating factor1.291.221.151.081.00.91
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