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用EXCEL建模验算,轻松算出电缆截面积问题

  • 2026-04-09 21:09:49
用EXCEL建模验算,轻松算出电缆截面积问题
      时常看到不少电气设计师用计算器算来算去，算电缆截面积到底多少比较合适。本着“聪明人做聪明事”的角度，今天让大家来一个一劳永逸，直接用Excel建模，将相关参数输入进去，就很快算出电缆截面截面积了，这个方法并不复杂，从此以后就可以告别计算器。
      Step1：电流I=P（功率）/（1.732*U（电压）*cos功率因素）
      Step2：截面积S（平方m㎡）=1.732*0.0175（铜导体电阻率）*I（电流）*L（布线长度）/19
      [案例]：总功率132kW、铺设长度200m、380V电压、cos取值0.8，我们将这4个参数输入到Excel中，很快就会出结果
      经过计算电缆截面积为79.99m㎡，故建议采用95m㎡的电缆，终于可以告别计算器了。
      以上内容从该书内转载，书《房地产开发项目工程成本策划&设计&控制&耦合（下册）》出版发行了，识别以下图片的二维码可查看目录和下单~
      或请加入手机微信：13928179131，联系李老师助理也可以购买~
永远的李哥，永恒的经典；李哥原创，致敬经典
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  1. CONNECT:[ UseTime:0.000931s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
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  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000741s ]
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  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001382s ]
  6. SELECT * FROM `set` [ RunTime:0.000554s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001401s ]
  8. SELECT * FROM `article` WHERE `id` = 489485 LIMIT 1 [ RunTime:0.000974s ]
  9. UPDATE `article` SET `lasttime` = 1776055303 WHERE `id` = 489485 [ RunTime:0.003760s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000613s ]
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  12. SELECT * FROM `article` WHERE `id` > 489485 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000920s ]
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  15. SELECT * FROM `article` WHERE `id` < 489485 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.009695s ]
0.194344s