针对低压供电系统因谐波和电压波动等因素给机电设备造成的危害,采用三级保护、节能布控设计,既提高了功率因数、节能效果显著,又降低了事故率、大大提高了低压供系统的安全可靠性。 For low-voltage power supply system due to harmonic and voltage fluctuations and other factors to the mechanical and electrical equipment caused by the harm, the use of three protection, energy-saving cloth control design, not only improve the power factor, energy-saving effect is significant, but also reduces the accident rate and greatly enhance the low-voltage system The safety and reliability.