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为了限制供电线路中电压损失的大小,保证供电质量,国家对低压供电线路允许电压损失的大小做了明确的规定。但目前出版发行的有关书籍、手册及文献却对允许电压损失的数值表述不一。现举例如下: 一、1984年由煤炭工业出版社出版,刘用中等编写的《煤矿电工学》第264页,“……容许电压损失的确定 根据电压偏移不得超过额定电压±5％的规定。……对于380伏系统Σ△U=400-361=39伏;对于660伏系统Σ△=690-627=63伏。” 二、1980年由煤炭工业出版社出版的《煤矿电工手册》4分册中第4-7-53页,
In order to limit the size of the voltage loss in the power supply line and ensure the power supply quality, the state clearly stipulates the size of the voltage loss allowed by the low-voltage power supply line. However, the books, brochures and literature currently published and published have different values for the allowable voltage loss. The following is an example: First, published in 1984 by the Coal Industry Press, Liu Yongzhong prepared “Coal Mine Electrical Engineering” p. 264, “... to allow the determination of voltage loss according to the voltage offset shall not exceed the rated voltage ± 5% of the provisions . ... ΣΔU = 400-361 = 39V for a 380V system and ΣΔ = 690-627 = 63V for a 660V system. ”II. Coal Mine Electrical Manual, 1980, published by Coal Industry Press 4 Volume 4-7-53 pages,