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本标准适用于单台旋转电机在稳态运行时的噪声测定。按本标准所规定的方法测定电机噪声,其精度在3分贝以内。 1.测定项目 (1) 电机噪声的A计权声功率级; (2) 电机噪声的1/1倍频程或1/3倍频程频谱分析;
This standard applies to a single rotary motor noise measurement in steady-state operation. According to the standard method of determining the motor noise, the accuracy of less than 3 dB. 1. Measurement items (1) A-weighted sound power level of motor noise; (2) 1/1 octave or 1/3 octave frequency spectrum of motor noise;