针对空压干燥机组开机时总开关跳闸的故障现象进行分析检查，得出是冷冻干燥机制冷压缩机电机烧毁造成的。然后分析制冷压缩机烧毁的原因并对冷却水系统进行改进，最后空压干燥机组运行正常。%In this paper, the checking and analysis are conducted aim at the main switch trip fault in air compression-drying unit while starting up. The result indicates that the motor of the refrigeration compressor is burned down. The paper analyses why the motor has been burned down. And the improving is carried out for the cooling water system. The air compression-drying unit runs normally at the last.
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