IEC 60853-1 Calculation of the cyclic and emergenc
电缆在循环负荷和紧急过载条件下的载流量计算 第1部分:18/30 (36) kV及以下电缆的循环载流系数
Calculation of the cyclic and emergency current rating of cables Part 1: Cyclic rating factor for cables up to and including 18/30 (36) kV
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