电动机,荧光灯,水银灯等电器一般耗用无功电力,使线路电压下降,损失增加,并需增加供电设备容量。为鼓励用户改善功率因数,奖励设置进相电容器,在电费制度中作了以功率因数85％为基准的赏罚规定。目前的规定大致是:50kw以下的设备,功率因数在85％以上时基本电费减收5％,功率因数在85％以下 Electric motors, fluorescent lamps, mercury lamps and other electrical appliances generally consume reactive power, so that the line voltage drops, the loss increases, and the need to increase the power supply capacity. In order to encourage users to improve the power factor, a phase-in capacitor was set for reward and a reward and punishment rule based on a power factor of 85% was made in the electricity tariff system. The current rules are roughly: 50kw the following equipment, the power factor of 85% or more when the basic electricity to reduce the 5%, the power factor of 85% or less