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空压机电动机满载下转速降低,即为“丢转”。其原因是由于电机运行中带有3部分电阻:电缆电阻、交流接触器触头接触电阻和频敏变阻器阻抗。电机相当于串接上述3部分电阻之和运行在人工特性曲线上。
Air compressor motor speed is reduced under full load, that is, “lost turn.” The reason is due to the motor with 3 parts of the resistance: cable resistance, AC contactor contact resistance and frequency sensitive rheostat impedance. The motor is equivalent to the sum of the resistance of the above three parts running on the artificial characteristics curve.