FM221
电机的额定电压是其、稳定、工作的前提条件，因此在选择电机时应根据实际情况合理选择额定电压，同时在安装和使用电机时，也应严格遵守相关的操作规程和标准，确保电机能够长期稳定运行。
此外，需要注意的是，电机的额定电压和电机的额定功率是两个不同的概念。电机的额定功率是指电机在额定工作条件下能够输出的大功率，与电机的额定电压有的关系，但并不是完全相关的概念。因此，在选择和使用电机时，需要同时考虑电机的额定电压和额定功率等参数，以保证电机能够满足实际应用的要求。
电动机可以在额定电压变动-5%至+10%的范围内运行，其额定出力不变。
也就是说，380伏的电动机正常工作的电压范围是361—418伏。
过高的电压可能使电动机损坏，过低的电压将导至出力不足甚至停转。
1、首先输入220V的一般是小功率的驱动器5KW以下，输出范围在0-400HZ，输出电压3相0-220V。
2、3相380输入的驱动器跟具型号的不同，输出的功率也是不同的，一般常用的在5-50KW之间，范围在0-400HZ，输出电压是3相380V
3、输入的电压和频率是固定的，输出的电压和频率是可调的，电压可调范围在3*0-220或者3*0-380V
电机额定电压时，适用电压范围一般为正负百分之十左右，否则会严重影响电机寿命甚至烧毁。
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