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See Chinese contents: GB 30253-2013 GB 30253-2013: Minimum allowable values of energy efficiency and energy efficiency grades for permanent magnet synchronous motors
This Standard specifies the energy efficiency grades, minimum allowable values of energy efficiency, evaluating values of energy conservation and test methods FOR line-start three-phase permanent-magnet synchronous motor, elevator permanent-magnet synchronous motor, and permanent-magnet synchronous motor driven by variable frequency equipment. This Standard applies to line-start three-phase permanent-magnet synchronous motor WORKING under three-phase AC power supply with voltage of 1140 V and below, 50 Hz, rated at 0.55 kW - 375 kW, Number of poles 2-pole, 4-pole, 6-pole, 8-pole, 10-pole, 12-pole and 16-pole, single-speed enclosed fan-cooled, continuous duty; elevator permanent-magnet synchronous motor WORKING under voltage of 1000 V and below, variable frequency power supply, rated power of 0.55 kW - 110 kW; permanent-magnet synchronous motor driven by variable frequency equipment WORKING under voltage of 1000 V and below, variable frequency power supply, rated power of 0.55 kW - 90 kW.
