P0926JM P0926JM

发布时间:2016-11-24

P0926JM

P0926JM

P0926JM

低压软启动器停车方式主要有自由停车,软停车,制动停车三种。传统电动机停车方式常用自由停车,但有许多应用场合,自由停车会产生很大问题,如高层建筑水泵系统,采用自由停车,会产生巨大“水锤”效应,使管道、水泵损坏。利用软停车可以消除自由停车带来这种反惯性冲击。停车时刻t2发出停车指令,电动机端子电压从Un缓慢下降,电压下降瞬间电动机电流会有一个小电流冲击,然后电动机电流会随电压下降而下降,直至电动机停下来。
    2、低压软启动器选用时应注意问题~/ S0 X8 B
     2.1低压软启动柜电气接线与元件排列
  一般低压软启动柜电气接线如图2所示。柜内电气元件按图示顺序排列,作到主接线简短不交叉,便于铜排连接。软启动器安装接触器右侧不受其他元件发热影响。软启动器与控制柜边壁及其他元件间距要求≥100mm,方便软启动器散热。

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