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配电柜电气原理图中主电路和辅助电路讲解

文章出(chu)处:人气:184发表时间:2021-09-24 11:35:08

配电(dian)(dian)(dian)(dian)柜(ju)的(de)(de)(de)虽然电(dian)(dian)(dian)(dian)气连接(jie)线(xian)多(duo),但只要(yao)分清主(zhu)电(dian)(dian)(dian)(dian)路(lu)(lu)和(he)辅(fu)助电(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)接(jie)线(xian)原理图(tu),读懂电(dian)(dian)(dian)(dian)气原理图(tu)应该(gai)掌识图(tu)的(de)(de)(de)基本方法和(he)步骤,对配电(dian)(dian)(dian)(dian)柜(ju)接(jie)线(xian)安装(zhuang)和(he)检修(xiu)是很(hen)有(you)帮助的(de)(de)(de)。因此应该(gai)熟悉电(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)常见(jian)的(de)(de)(de)保(bao)护环(huan)(huan)节、自环(huan)(huan)节、联镜(jing)环(huan)(huan)节,应该(gai)熟悉并掌据常用(yong)的(de)(de)(de)几种(zhong)(zhong)基本电(dian)(dian)(dian)(dian)路(lu)(lu)。电(dian)(dian)(dian)(dian)气原理图(tu)识图(tu)的(de)(de)(de)基本方法和(he)步骤然后介绍(shao)电(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)常见(jian)的(de)(de)(de)保(bao)护环(huan)(huan)节、自锁(suo)环(huan)(huan)节、联镜(jing)环(huan)(huan)节;再介绍(shao)常用(yong)的(de)(de)(de)时(shi)序电(dian)(dian)(dian)(dian)路(lu)(lu)、以位(wei)置控(kong)制(zhi)(zhi)(zhi)为(wei)(wei)原则的(de)(de)(de)电(dian)(dian)(dian)(dian)路(lu)(lu)、以速(su)度控(kong)倒(dao)为(wei)(wei)原则的(de)(de)(de)电(dian)(dian)(dian)(dian)路(lu)(lu)、多(duo)地点控(kong)制(zhi)(zhi)(zhi)的(de)(de)(de)电(dian)(dian)(dian)(dian)路(lu)(lu)、以温度控(kong)制(zhi)(zhi)(zhi)为(wei)(wei)原则的(de)(de)(de)控(kong)制(zhi)(zhi)(zhi)电(dian)(dian)(dian)(dian)路(lu)(lu)等(deng)。以上(shang)是几种(zhong)(zhong)常用(yong)控(kong)制(zhi)(zhi)(zhi)电(dian)(dian)(dian)(dian)路(lu)(lu)。

配电柜主电路和辅助电路.jpg

1、电气原(yuan)理(li)图中的主电路和辅助电路

配电柜中电气原理图根据习惯画法可分为主电路和轴助电路(又称为二次控制电路)两种电路,主电路主要给常用电器(电动机、电弧炉等)供电的电路,一般功率较大,电缆线径较粗。是受轴助电路控制的电路。主电路又称为主回路。在实际配电柜中主电路常用功率从几百瓦到几百KW都有。主电路习惯用粗实线画在图纸的左边或上部。例如图中用粗实线表示的电路,就是主电路。

2、配电柜中(zhong)辅(fu)助电路

辅助电路是指给主电路供电的电路,是控制主电路动作的电路,也可以说是给主电路发出指今信号的电路。轴助电路又称为控制电路、控制回路等。辅助电路习惯用细实线画在图纸的右边或下部。如下图中用细实线表示的电路,就是辅助电路。

配电柜电路图识别.jpg

在实际电气原理图中主电路一般比较简单,用电器数量较少而辅助电路比主电路复杂,控制元件也较多,有的辅助电路是很复杂的,例如用单片机或者plc控制器为控制核心的控制电路就是很复杂的。目前在配电柜强弱电一体电路中,已实现高度智能化和自动化。plc控制器在配电柜的应用大大提高了控制精度,节约了人工成本。

如采(cai)用plc控(kong)(kong)(kong)制器组成(cheng)的(de)(de)控(kong)(kong)(kong)制电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)是由输入信(xin)(xin)(xin)号(hao)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)、包括模拟量(liang)和(he)数量(liang)量(liang)输入,信(xin)(xin)(xin)号(hao)处理中心(控(kong)(kong)(kong)制器)、输出(chu)信(xin)(xin)(xin)号(hao)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(包括模拟量(liang)输出(chu)和(he)数量(liang)量(liang)输出(chu)信(xin)(xin)(xin)号(hao)),信(xin)(xin)(xin)号(hao)放(fang)大(da)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)、驱(qu)动(dong)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)等(deng)多个单元电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)组成(cheng)。在(zai)每个单元电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中又有若(ruo)干小(xiao)的(de)(de)回(hui)路(lu)(lu)(lu),每个小(xiao)的(de)(de)回(hui)路(lu)(lu)(lu)中有一个或几(ji)个控(kong)(kong)(kong)制元件,这样复杂的(de)(de)控(kong)(kong)(kong)制电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)分析起(qi)来(lai)是比较困(kun)难的(de)(de),要求有的(de)(de)理论基础和(he)率富的(de)(de)实践(jian)经验,为(wei)此J9九游会AG 在(zai)实际(ji)电(dian)(dian)(dian)(dian)(dian)(dian)工(gong)操作(zuo)中要注意(yi)学习和(he)总结(jie)经验。对(dui)(dui)于大(da)型(xing)自动(dong)化控(kong)(kong)(kong)制电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),需要对(dui)(dui)plc控(kong)(kong)(kong)制器进行逻(luo)辑运(yun)(yun)算编程。这样就可以通过控(kong)(kong)(kong)制器对(dui)(dui)各个用电(dian)(dian)(dian)(dian)(dian)(dian)器和(he)执(zhi)行机构发(fa)出(chu)控(kong)(kong)(kong)制指令。实现自动(dong)控(kong)(kong)(kong)制运(yun)(yun)行,节省(sheng)人工(gong)成(cheng)本提高生(sheng)产效率。


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