ACS550-01-012A-4变频器
什么是过功率保护?
答:除了额定功率之外,还有一个数据,叫“过载保护”,英文叫“OPP”。过载保护指电源的负载持续上升,达到某个点了,电源就自动断电,以免出现过流损坏电源或者电脑的其他部件。OPP值通常是额定功率的1.3倍左右,有些厂商把OPP设得太高,其实是不的。在额定功率和OPP之间,会有一个区间,比如,新冷钻额定功率300W,OPP为370W,那么,300-370W之间的这个区域就是一个“盲区”。如果在这个区间停留的时间过长(一般可以持续数十秒时间),很可能导致电源或电脑的其他部件烧毁。
ACS550-01-012A-4变频器
电动机起动困难,额定负载时,电动机转速低于额定转速较多
1.故障原因①电源电压过低;②面接法电机误接;③转子开焊或断裂;④转子局部线圈错接、接反;③修复电机绕组时增加匝数过多;⑤电机过载。
2.故障排除①测量电源电压,设法改善;②纠正接法;③检查开焊和断点并修复;④查出误接处予以改正;⑤恢复正确匝数;⑥减载。
ACS355-03E-04A1-4变频器
ACS550-01-012A-4变频器
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