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接触器热继电器自锁接线图

来源：baiyundou.net   日期：2024-09-27

电工们看看吧，上百种电路，不一定你们都懂一、日光灯类：























































二、断路器、接触器控制回路：
























三、电动机



































































延时






















四：热电偶


































五、电能表






























































六、其他






























电工电路中断路器和交流接触器接线图

断路器主要用作供电线路的保护开关、电动机及照明系统的控制开关，也可用于输、配电系统的某些重要环节。当线路发生短路、过载、欠压等故障时切断故障电路.
　　接触器在机床中用于频繁的接通和分断大电流的电路，具有动作迅速、操作方便和便于远距离控制的特点，但本身不具备短路保护和过载保护能力，因此必须与熔断器、热继电器配合使用.

　　接触器的接线方法有很多种，用的地方不一样，接线方法也不一样，这里指的是接触器的单一接法和多个接触器的接法，一般最常见的就是利用断路器、

按钮开关、热继电器、延时继电器、数字继电器等低压控制元器件产品组合。 其实，无论你用什么接触器其功能和工作原理都是一样，无非是外形不一样。

　　主触头：三个主触头（用来接主控制电路）。

　　辅助触头：现在常用的接触器有CJX1、CJX2接触器这两个产品在辅助触头上有区别，CJX1是由四组辅助触点，可分为2NO(常开）、2NC(常闭），而CJX2从9A-32A都是有一组辅助触头，可组装成 10表示常开；01表示常闭。

　　控制电源：这里就是我们说的线圈电压，正常使用的一般为220V,380V,特殊伏数有12V，24V，36V，48V，72V，110V等。


　　以下介绍电工施工中一些断路器和接触器控制回路接线图:

CJ10-10接触器控制电路

 

接触器接线图-电路实例讲解

 

接触器接线图

　　顺序启动、停止控制电路是在一个设备启动之后另一个设备才能启动运行的一种控制方法，常用于主、辅设备之间的控制，如上图当辅助设备的接触器KM1启动之后，主要设备的接触器KM2才能启动，主设备KM2不停止，辅助设备KM1也不能停止。但辅助设备在运行中应某原因停止运行（如FR1动作），主要设备也随之停止运行。

工作过程：

　　1、合上开关QF使线路的电源引入。

　　2、按辅助设备控制按钮SB2，接触器KM1线圈得电吸合，主触点闭合辅助设备运行，并且KM1辅助常开触点闭合实现自保。

　　3、按主设备控制按钮SB4，接触器KM2线圈得电吸合，主触点闭合主电机开始运行，并且KM2的辅助常开触点闭合实现自保。

　　4、KM2的另一个辅助常开触点将SB1短接，使SB1失去控制作用，无法先停止辅助设备KM1。

　　5、停止时只有先按SB3按钮，使KM2线圈失电辅助触点复位（触点断开），SB1按钮才起作用。

　　6、主电机的过流保护由FR2热继电器来完成。

　　7、辅助设备的过流保护由FR1热继电器来完成，但FR1动作后控制电路全断电，主、辅设备全停止运行。

常见故障；

　　1、KM1不能实现自锁：

　　分析处理：

　　1)、KM1的辅助接点接错，接成常闭接点，KM1吸合常闭断开，所以没有自锁。

　　2)、KM1常开和KM2常闭位置接错，KM1吸合式KM2还未吸合，KM2的辅助常开时断开的，所以KM1不能自锁。

　　2、不能顺序启动KM2可以先启动；

　　分析处理：

　　KM2先启动说明KM2的控制电路有电，检查FR2有电，这可能是FR2接点上口的7号线，错接到了FR1上口的3号线位置上了，这就使得KM2不受KM1控制而可以直接启动。

　　3、不能顺序停止KM1能先停止；

　　分析处理：

　　KM1能停止这说明SB1起作用，并接的KM2常开接点没起作用。分析原因有两种。

　　1)、 并接在SB1两端的KM2辅助常开接点未接。

　　2)、 并接在SB1两端的KM2辅助接点接成了常闭接点。

　　4、SB1不能停止；

　　分析处理：

　　检查线路发现KM1接触器用了两个辅助常开接点，KM2只用了一个辅助常开接点，SB1两端并接的不是KM2的常开而是KM1的常开，由于KM1自锁后常开闭合所以SB1不起作用。

两台电动机顺序起动、顺序停止电路接线示意图 

另介绍一种改进交流接触器接线方法:

　　交流接触器等电气设备的接线端子有很多是采用拱形垫片的。这种接线方法对一个接线端子接一个线头是不成问题的，但要同时接几个线头或粗细不等的线头时，就会产生接触不紧密、螺钉易松动的现象。尤其当接触器用于频繁吸合和释放时，接线端子上的螺钉更易松动。这样就使拱形垫片与线头之间的接触电阻增大，甚至脱离，造成电气设备不动作或发生单相运转等故障。针对上述情况，交流接触器接线端子是拱形垫片时的正确接线方法应是：

　　先在拱形垫片下加两个平垫圈，接线时先把细线或软线弯成一大半圆圈，套在两个平垫圈之间，然后把粗线压在拱形垫片下，把螺钉拧紧，这样无论怎样振动，都和接线端子只接一个线头一样牢固和安全。



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谭帝哗647220接触器和热继怎么接,不要启动停止按钮 -
莘浦燕18466978922 ______ 220接触器和热继不要启动停止按钮,需要外接一个时控开关进行手动或者自动控制. 220接触器和热继电器接线图: 接线方法: 1、热继电器FR串联在接触器的线圈回路中,即时控开关输入接电源火线. 2、时控开关输出接接触器线圈A1. 3、接触器线圈A2接零线. 热继电器主要作用:起电动机的过载保护.

谭帝哗647请问:一个交流接触器,一个热继电器,一个按钮开关,一个电机的接线方法和接线图? -
莘浦燕18466978922 ______ 说通俗一点哈,主线路三根火线接接触器的L1、L2、L3端子(顺序无所谓),接触器的出端T1、T2、T3接热继电器的进线,热继电器的出线直接接电机.控制线路从接触器的进线端引一根线到热继电器的常闭触点,出线再接按钮开关(带自锁的话,按钮开关并上一组接触器的常开触点),然后进接触器的线圈,线圈电压380V的话出线回到接触器的另一根火线上,220V接零线. 电机反转调换主线路任意两根火线的位置.

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莘浦燕18466978922 ______ 接线的方法和详细的步骤如下: 1、首先,接触器的6个主触点,上面的三个连接到三相电源线,下面的三个端子连接到热继电器三个主端子进线.三相出线连接至热继电器出线主端子,然后连接至电机,如下图所示. 2、其次,选择任何一...

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莘浦燕18466978922 ______ 给你画了个简图,1,3,5为进线,2,4,6为出线.

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莘浦燕18466978922 ______ ①首先核对热继电器规格是否符合控制对象的过载保护技术要求,热继电器只能作为电动机的过载保护,而不能作为短路保护,常与接触器和熔断器组合使用. ②热继电器的安装方向必须与说明书中规定的方向相同,误差不应超过S ③当热继...

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莘浦燕18466978922 ______ 这是一个电机正反转的实际接线图.图中的FR就是热继电器,从图中可以看出,接电动机的三相电(一般称为一次回路或主回路)的三根线从接触器KM1、KM2下口出来后,要接到热继电器的上面三个端子上,再从下面的三个端子引出接到电...

谭帝哗647交流接触器与过热继电器怎样接? -
莘浦燕18466978922 ______ 是串在负载和接触器之间 一、交流接触器:在电工学上.接触器是一种用来接通或断开带负载的交直流主电路或大容量控制电路的自动化切换器,主要控制对象是电动机,此外也用于其他电力负载,如电热器,电焊机,照明设备,接触器不仅...

谭帝哗647两个接触器的辅助触点常开常闭怎么接正转反转联锁,求详细!求图纸!谢谢. -
莘浦燕18466978922 ______ 详细说明: QS:总开关 KM1:正转接触器 KM2:反转接触器 FR:热继电器 M3~:三相异步电机 PE:电机外壳接地 FU:控制线路熔断器 SB1:停止按钮 SB2:反转启动按钮 SB3:正转启动按钮 合上空开,按下SB2,KM2线圈得电,KM2主...

谭帝哗647380V交流接触器热继电器启停开关有几种接线方法 -
莘浦燕18466978922 ______ 380V三相交流接触器配合热继电器启停设备常见有2种接线方式:一是控制电机单方向旋转的线路,二是控制电机的正反转线路;常规接触器配合热继电器不作为线路的开合控制.正反方向旋转和单相旋转控制的区别在于逆向旋转时需改变电源的相序,使得电机反转.

（编辑：自媒体）
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