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时间继电器的分类

2013/12/14 9:18:07点击:
 

继电器的分类

  继电器的分类方法较多,可以按作用原理、外形尺寸、保护特征、触点负载、产品用途等分类。

  一、按作用原理分

  1.电磁继电器

  在输入电路内电流的作用下,由机械部件的相对运动产生预定响应的一种继电器。

  它包括直流电磁继电器、交流电磁继电器、磁保持继电器、极化继电器、舌簧继电器,节能功率继电器。

  (1)直流电磁继电器:输入电路中的控制电流为直流的电磁继电器。

  (2)交流电磁继电器:输入电路中的控制电流为交流的电磁继电器。

  (3)磁保持继电器:将磁钢引入磁回路,继电器线圈断电后,继电器的衔铁仍能保持在线圈通电时的状态,具有两个稳定状态。

  (4)极化继电器:状态改变取决于输入激励量极性的一种直流继电器。

  (5)舌簧继电器:利用密封在管内,具有触点簧片和衔铁磁路双重作用的舌簧的动作来开、闭或转换线路的继电器。

  (6)节能功率继电器:输入电路中的控制电流为交流的电磁继电器,但它的电流大(一般30-100A),体积小, 节电功能.

  2.固态继电器

  输入、输出功能由电子元件完成而无机械运动部件的一种继电器。

  3.时间继电器

  当加上或除去输入信号时,输出部分需延时或限时到规定的时间才闭合或断开其被控线路的继电器。

  4.温度继电器

  当外界温度达到规定值时而动作的继电器.

  5.风速继电器

  当风的速度达到一定值时,被控电路将接通或断开。

  6.加速度继电器

  当运动物体的加速度达到规定值时,被控电路将接通或断开。

  7.其它类型的继电器

  如光继电器、声继电器、热继电器等。