Now the industrial electrical equipment, due to extensive use of induction motors and transformers, power supply in addition to the supply of active outside still needs a lot of reactive power, due to the reactive current through the line system, resulting in power distribution equipment capacity underutilized, and cause The following damages: (1) the power factor, the lower the power loss is greater (power loss and power factor inversely proportional to the square of the value); (2) the larger the voltage drop; (3) to increase the installed capacity and power loss; ( 4) increase the user's operating costs (electricity); industrial electricity reactive power directly affect the electricity, the power factor management is very important, the power sector provision of electricity bulk user must ensure that the power factor above 0.9, other users should ensure 0.85 or more. After efforts to reach the above provisions, must be installed capacitor compensation equipment. Power factor is a measure of an important indicator of economic operation of the power supply system. Power system reactive power compensation mode are: shunt capacitor, series capacitors, synchronous condenser and the like. Industrial enterprises and civil users to use more power factor compensation capacitors in parallel. Shunt capacitors installed in the power supply system according to the position of points: High concentrated compensation, low group compensation, low dispersion compensation. Currently Zerui electrical capacitance compensation cabinet production tools into groups belonging to the low-pressure compensation in this category. There are three-phase capacitor compensation supplement and complement the three-phase sub-categories, now widely used in low-voltage three-phase on the way up. Three-phase total complement: that while the A, B, C three-phase compensating capacitor of the same. Three-phase sub-fill: that each phase of the three phases were calculated COSφ, then a corresponding phase compensation based on the calculation results. Three-phase total complement of compensation accuracy is low, but the control is relatively simple. Three-phase high points make up the compensation accuracy, but the control is relatively complex. Zerui Guangdong Electric is larger specializing in the production of high and low voltage distribution cabinet, distribution box, box-type substation, high voltage switchgear, center cabinet, RMU professional manufacturers. While providing you with high and low voltage distribution cabinet Dongguan renovation project, a full range of services for your business.