Guangxi Nosby Electric Co., Ltd. was founded in 1994 with a registered capital of 5.2 million yuan. It is one of the first batch of "Patent Work Pilot Enterprises" in Guangxi, an "Export-oriented R&D Enterprise" supported by the autonomous region, and "Nanning City Excellent Product Innovation Demonstration Enterprise". In 2005, it merged with Nanning Electrical Complete Equipment Factory. After years of development, the company has its own unique research, development, production model and experienced R&D team. And it has formed an all-round partnership with Xuji Electric Co., Ltd., a leading manufacturer of electric power equipment of the State Grid, to develop, produce and market patented products. In the field of intelligent electrical equipment manufacturing, we continue to introduce new technologies and new products, and have mass production capabilities. In response to the national "Twelfth Five-Year Plan" energy conservation and emission reduction plan, we developed and produced two energy-saving products, the MTK intelligent lighting control voltage regulator (cabinet) and the DJHK low-voltage reactive power dynamic compensation device.
DJHK type low-voltage reactive power dynamic compensation device
1. Scope of application
This device is suitable for low-voltage power distribution with rated AC 50Hz and nominal voltage 380V System, the capacitor switching time of the same group is not more than 1 second for dynamic compensation of reactive power to improve the quality of the supply voltage, improve the power factor, reduce the power loss of the grid, and suppress the harmonics of the grid.
II. Technical features
1) The priority compensation group realizes split-phase compensation, and the basic compensation group realizes three-phase compensation.
2) The priority compensation group and the basic compensation group adopt the dual-cycle hot standby automatic cycle switching working method.
3) Use reactive power as the control physical quantity and control it according to the four-quadrant area.
4) The dynamic switching response time of reactive power compensation is not greater than 1 s.
5) The intelligent fast composite switch can switch the compensation capacitor in separate phases without inrush current or flashover.
6) The intelligent fast composite switch has been inspected by the national statutory testing agency:
The electrical life is greater than 1 million times; the electromagnetic immunity is Class A;
7) The dynamic compensation controller has 18 channels of cyclic switching working mode output for the priority component and 12 channels of cyclic switching working mode output for the basic component.
8) The electromagnetic immunity of the dynamic compensation controller is Class A, the Chinese menu is displayed, and the product has passed CQC certification.
9) Dynamic compensation controller measurement accuracy: current/voltage level 0.5; power level 1.0; power factor 1.0 level.
10) The dynamic compensation controller has the function of statistical historical record data: statistical capacitor running time, 2-21st harmonic content of various voltages and currents, highest voltage, highest current, highest reactive power value and Appearance time.
11) The device has protection functions such as overvoltage, undervoltage, phase failure, overload, short circuit, and harmonic overlimit.