建筑工地上功率因数的高低,是衡量工地用电是否合理的重要参数;也是关系到施工用电中对变压器容量和配电线路截面的选择。国内有关资料认为建筑工地的功率因数值取0.65～0.75之间。这个数据没有考虑任何技术措施,所以是不合理的。随着国民经济的发展,建筑施工用电量增加,特别是当 The level of the power factor at the construction site is an important parameter for measuring the reasonableness of the power consumption at the construction site; it is also related to the selection of the transformer capacity and the cross section of the distribution line in the construction power supply. According to relevant domestic data, the power of the construction site is taken from 0.65 to 0.75. This data does not consider any technical measures, so it is unreasonable. With the development of the national economy, electricity consumption for building construction increases, especially when