TSXPAY262

TSXPAY262 带定时器的星三角接法

电路图如上图所示。动态电路使用三个接触器。控制电路采用两个按钮来控制电机的运转和停止。

当我们按下 ON 按钮时，电机将以星形模式运行。这时，计时器开始计时。当定时器达到预设时间时，定时器触点将改变它们的状态，导致电路进入三角模式。

当我们按下OFF按钮时，这个电路就会恢复到原来的状态。

A。星型模式

当我们按下ON按钮时，接触器K和接触器K2的动触点闭合，电机以星形方式启动。定时器将决定电机在星形模式下运行多长时间。根据电机的功率和额定转速，我们需要调整这个时间。当电机切换到三角模式时，电机转速应达到额定转速的 75%。电机工作在星形模式

b. 增量模式

当定时器T计数到预设值时，定时器T触点改变状态。在动态电路中，接触器K和K1的触点闭合，即电机工作在三角模式。在Delta模式下，电机以额定功率和额定转速正常运行。

TSXPAY262

TSXPAY262 

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