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滑线总负载计算电流IG的计算
发布时间: 2013-02-27 点击次数: 1139次滑线总负载计算电流IG的计算
PGK:计算总共率 [KW] UN:额定电压 [V] COSφ:功率因数
(4)根据总负载计算电流IG,选择滑线型号,然后对电压降进行校核。
1)环境温度变化对电压降的影响
我们提供的相关技术参数时环境温度为40℃时的结果,若工作环境温度超过40℃时,电压降应按下式进行换算△U:电压降 [V] △U40℃:40℃时的电压降 [V] UN:额定电压 [V]
Fv:电压热变系数,其值见下表:导体温度70℃75℃80℃85℃90℃95℃100℃105℃fv钢导体≤200A0.9010.8860.8720.8580.8450.8320.8200.907>200A0.9080.8940.8800.8670.8540.8420.9300.818铝导体≤500A0.9650.9600.9540.9480.9430.9370.9320.926>500~800A0.9760.9820.9680.9640.9600.9560.9520.948>800A0.9850.9830.9790.9760.9720.9690.9670.962铜导体≤500A0.9590.9520.9450.9380.9320.9250.9190.912>500~800A0.9830.9800.9770.9740.9710.9680.9650.961>800~1250A0.9930.9930.9910.9900.9890.9870.9860.985>1250A0.9980.9970.9960.9960.9950.9940.9920.991- 下一篇:对滑线进行选型计算
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