In modern power electronic equipment with the ccontinuous improvement of equipment in the power and switching frequency and high frequency in largecurrent reactor, so more and more application rheeds and, combined with our proprietary technology and industry experience, in this kind of reactor design and manufac turing,wethroughthecore and the conductor heating reasonable choice, handling, and repeatedly check, ensure the reactor under the condition of high frequency large current high performance operation.At present this kind of products are widely used in UPS and inverter in the fieldof newenergyandsoon. Switching frequency of 40 KHz.