当电压、谐波测量显示值超出设定的上、下限保护值的范围时，控制器报警指示灯亮。
When display value of voltage is out of the scope of upper and lower limit protection value, alarm indication lamp of controller is lighted.
当电压、谐波测量显示值超出设定的上、下限保护值的范围时，控制器报警指示灯亮。
When display value of voltage is out of the scope of upper and lower limit protection value, alarm indication lamp of controller is lighted.
应用推荐