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See Chinese contents: GB 18613-2012 GB 18613-2012: Minimum allowable values of energy efficiency and energy efficiency grades for small and medium three-phase asynchronous motors
This Standard specifies the limited values of energy efficiency grade; allowable values of energy efficiency; target allowable values of energy efficiency; evaluating values of energy conservation; and test methods for small and medium three-phase asynchronous motors. This Standard is applicable to general-purpose motors or general-purpose explosion-proof motors of single-speed enclosed self fan cooled; N design; and continuous duty system with a voltage below 1000V; powered by a 50 Hz three-phase AC supply; the rated power is within a range of 0.55kW~315kW; and the number of poles is 2, 4 and 6.
