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本文围绕变频器,阐述了电动机的允许持续电流和工作频率的关系,分析了电子热保护器的反时保护功能及过电流的原因,并对变频器过电流的处理保护提出了注意事项。
In this paper, the relationship between the permissible continuous current and the operating frequency of the motor is elaborated around the inverter. The anti-time protection function of the electronic thermal protector and the cause of the overcurrent are analyzed. Some precautions are put forward to the over-current protection of the inverter.