Frequency control of motor speed with input and output reactor: frequency converter and governor in use process, often from the impact of the surge current and surge voltage, can seriously Damage to the performance and service life of converter and governor, so want to in front of the reactor with input, to restrain the surge voltage and surge current, the protection of inverter And governor, prolong its service life and prevent the harmonic interference, at the same time because of the frequency converter and governor is with the method of variable frequency speed regulation, so at the time of speed regulation Often produce high harmonics and produce waveform distortion, will influence the equipment normal use, therefore, must be on the output side reactor with one output, is used to filter out harmonic voltage And harmonic current and improve power quality, our factory production of input and output series reactor, using imported high quality silicon steel sheet and high quality copper wire after the advanced craft refined but become, Has the characteristics of small volume, low temperature, no noise.