河北直供开山变频式空压机电动固定式空压机

保定开山空压机经销售后服务：一五一三O一六五八O九
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Ordinary screw conpressors can regulate the motor's rotation speed through external inverters to regulate air discharge volune in order that air volume produced matches that of used and hence achieves energy efficiency.However ordinary screw air compressors are built with motors with mains rated rotating speed,rated power and rated efficiency,whereas external inverters would force the air compressor's motor to deviate from its mains rated totating speed.Once the ordinary motor deviates fron its main rated rotating speed,its efficiency will be reduced significantly,and the greater the deviation the more significantly the efficiency will be declined.Withting all its rotating speed range ,the PM variable frequency screw air compressor is able to maintain extremely high motor efficiency,thus giving it superior energy-saving effect over ordinary screw air compressor with extemal inverter