Shanghai Hongkang Electric Appliances

Description :

  Reactor is an important reactive power compensation device used in power systems to limit short-circuit current, suppress harmonics, and improve power factor. In industrial power grids containing a large number of nonlinear loads such as frequency converters and rectifiers, reactors can effectively filter out high-order harmonics, prevent capacitor banks from being overloaded and damaged due to harmonic amplification, and ensure stable operation of the power grid. The reactors produced by Shanghai Hongkang Electric Appliance Co., Ltd. are widely used in low-voltage distribution cabinets, capacitor compensation cabinets, and variable frequency drive systems. They are suitable for power frequency AC circuits with rated voltages ranging from 400V to 690V, providing a pure power environment for various industrial motors and precision electronic equipment, and solving voltage fluctuations and harmonic interference problems.

  This series of reactors uses high-quality cold-rolled silicon steel sheets as the core material, which are processed through high-precision shearing and stacking processes to ensure uniform magnetic circuits, low losses, and low noise. The coil part is made of high-purity oxygen free copper wire winding, with an insulation level of F or H, which can withstand high temperature rise and mechanical stress. The product has a compact structure, flexible installation methods, and supports vertical or horizontal installation. The implementation standards comply with GB/T 1094.6 and IEC 60076-6 international standards, and undergo strict withstand voltage testing, inductance deviation detection, and long-term aging testing to ensure stable electrical performance even under harsh working conditions. The inductance linearity is good and the saturation characteristics are excellent.

  When selecting, the reactance rate should be determined based on the system voltage level, rated current, and the required harmonic suppression frequency (such as 5th, 7th, 11th, etc.). Common reactance rates include 1%, 5%, 7%, etc. For the variable frequency output terminal, dv/dt reactors or sine wave filters should be selected to protect the motor insulation; For capacitor compensation circuits, it is necessary to match the capacitor capacity to avoid resonance. Not suitable for DC circuits or non power frequency special occasions. Compared with hollow reactors, iron core reactors have smaller volume and lower cost, but attention should be paid to magnetic saturation issues; Compared with ordinary inductors, reactors focus more on the high current tolerance and long-term stability of power systems. When purchasing, it is necessary to clarify the installation space size and heat dissipation conditions.

  During installation, it is necessary to ensure sufficient heat dissipation space around the reactor and avoid placing it in close proximity to other heating elements. The wiring terminals should be tightened and regularly inspected to prevent loosening and oxidation. Daily maintenance mainly includes monitoring operating temperature, checking for abnormal vibration or noise, and regularly cleaning surface dust to maintain good heat dissipation. If the coil overheats, the insulation paint changes color, or abnormal noise increases, the machine should be stopped immediately for inspection. The typical service life can reach more than 10 years, depending on the ambient temperature and load conditions. It is recommended to conduct infrared temperature measurement and insulation resistance testing every six months to promptly identify potential hazards, ensure the safe and continuous operation of the power system, and extend the service life of supporting capacitors and frequency conversion equipment.

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