电缆每公里电容量.doc

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电缆每公里电容量
金川电线电缆厂网址 :
电缆主要技术参数 Main technical data of cable
20°C 时导体最大直流电阻 resista nee of con ductor at
20 °C b5E2RGbCAP
电压试验、局部放电试验
Voltage test and partial discharge 导体短路电流 Short — circuit
current p1EanqFDPw
电容、电感 (参考值) Capacitance and inductance of cable (reference value) 电容 DXDiTa9E3d
Capacitance
单芯电缆电感 Inductance of single core cable
三芯电缆电感
Inductance of three cores cable
电流载流量 The current carrying capacity
聚***乙烯绝缘电力电缆 PVC insulated power cable
(A) RTCrpUDGiT 在土壤中的敷设 Buried (A) 交联聚***乙烯绝缘非铠装型电力电缆
XPLE insulated unarmoured power cable (A) 交联聚乙烯
绝缘铠装型电力电缆 XLPE insulated armoured power cable
(A) 5PCzVD7HxA
~26/35kv
金属屏蔽层的短路电路 Short circuit current of screen 单芯电缆
Single core jLBHrnAILg
三芯电缆
Three-cores
•载流量计算条件：
Current ratings are calculated for the following installation conditions： 导体最高工作温度 Max. Rated temperature of the cable conductor xHAQX74J0X
聚***乙烯绝缘为 70C , 交联聚乙烯绝缘为 90C
PVC insulated 70 C ,XPLE insulated 90C
环境空气温度 ：
Ambient air temperature 40 C
土壤温度:
soil temperature 25 °C
土壤热阻系数 :
Rating factors for ground thermal resistive . C m/w LDAYtRyKfE
埋设深度 : Depth
仅考虑一个回路 Single circuit parallel laid 单芯电缆为水平敷设 , 间距为一个电缆外径
Single core is paralleled installation .Adjacent space is equivalent to the diameter of