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配电柜主电路原理图的识别方法和步骤

文(wen)章出处:人气:64发(fa)表时间:2021-09-25 08:57:49

配(pei)电(dian)(dian)柜(ju)内面对复杂和强(qiang)弱电(dian)(dian)一体化线路,检修不知如何下手。因(yin)此要想看(kan)(kan)懂电(dian)(dian)气原(yuan)(yuan)理(li)图(tu),必熟记(ji)电(dian)(dian)气图(tu)形符号(hao)所(suo)代表的(de)(de)电(dian)(dian)气设备(bei)、装(zhuang)置和控(kong)制元(yuan)件。在此基础上才能看(kan)(kan)懂电(dian)(dian)气原(yuan)(yuan)理(li)图(tu),看(kan)(kan)电(dian)(dian)气原(yuan)(yuan)理(li)图(tu)的(de)(de)一般(ban)方(fang)法是先看(kan)(kan)主电(dian)(dian)路,后(hou)看(kan)(kan)辅(fu)助电(dian)(dian)路,井根辅(fu)助电(dian)(dian)路各小路中控(kong)制元(yuan)件的(de)(de)动作(zuo)情(qing)况,研究辅(fu)助电(dian)(dian)路对主电(dian)(dian)路的(de)(de)控(kong)制情(qing)况。

配电(dian)柜主电(dian)路(lu)的识别(bie)方(fang)法和步骤(zhou)如下:

第一(yi)步:看配(pei)电柜内用电器(qi)

用(yong)电(dian)(dian)器(qi)(qi)所在的(de)(de)(de)电(dian)(dian)路是主(zhu)电(dian)(dian)路,用(yong)电(dian)(dian)器(qi)(qi)是指消耗电(dian)(dian)能或者(zhe)将电(dian)(dian)能转变为(wei)其(qi)他能量(liang)的(de)(de)(de)电(dian)(dian)气设(she)备、装置等(deng),如电(dian)(dian)动机、电(dian)(dian)护(hu)等(deng),看(kan)图时(shi)要首先看(kan)清楚主(zhu)电(dian)(dian)路中有几个用(yong)电(dian)(dian)器(qi)(qi),它们(men)的(de)(de)(de)类别、用(yong)途、接线(xian)方式以及一些不同的(de)(de)(de)要求(qiu)等(deng),图中的(de)(de)(de)用(yong)电(dian)(dian)器(qi)(qi)是一台三(san)相异步电动机(ji)启动和停(ting)止受接触器KM控制。

主电路原理图识别.jpg

第二步:弄清楚主电(dian)路中的用电(dian)器(qi)控(kong)制方式

用电(dian)器是(shi)有什么样(yang)的控制(zhi)元(yuan)件控制(zhi),是(shi)用几(ji)个控制(zhi)元(yuan)件控制(zhi)。如图中三相(xiang)异步电动机启(qi)动与停(ting)止是受接触器(qi)KM控制(zhi)实际电(dian)路(lu)中对用(yong)(yong)(yong)电(dian)器(qi)的(de)控(kong)(kong)(kong)制(zhi)(zhi)方(fang)法(fa)有(you)很多(duo)种(zhong),有(you)的(de)用(yong)(yong)(yong)电(dian)器(qi)只用(yong)(yong)(yong)开(kai)关控(kong)(kong)(kong)制(zhi)(zhi),有(you)的(de)用(yong)(yong)(yong)电(dian)器(qi)用(yong)(yong)(yong)启动置,有(you)的(de)用(yong)(yong)(yong)电(dian)器(qi)用(yong)(yong)(yong)接(jie)(jie)器(qi)其(qi)他维电(dian)器(qi)控(kong)(kong)(kong)制(zhi)(zhi),有(you)的(de)用(yong)(yong)(yong)电(dian)器(qi)是(shi)用(yong)(yong)(yong)程序(xu)控(kong)(kong)(kong)制(zhi)(zhi)器(qi)控(kong)(kong)(kong)制(zhi)(zhi),面有(you)的(de)用(yong)(yong)(yong)电(dian)器(qi)直(zhi)接(jie)(jie)用(yong)(yong)(yong)功率(lv)放大集成电(dian)路(lu)控(kong)(kong)(kong)制(zhi)(zhi)。正因为用(yong)(yong)(yong)电(dian)器(qi)种(zhong)类(lei)多(duo),所以对用(yong)(yong)(yong)电(dian)器(qi)的(de)控(kong)(kong)(kong)制(zhi)(zhi)方(fang)法(fa)就有(you)很多(duo)种(zhong),这就要求J9九游会AG 分析清主电(dian)路(lu)中的(de)用(yong)(yong)(yong)电(dian)器(qi)与(yu)控(kong)(kong)(kong)制(zhi)(zhi)元件(jian)的(de)对应关系。

主电路识别方法.jpg

第三步(bu):弄清楚主(zhu)电(dian)路除用电(dian)器(qi)以(yi)外其他元器(qi)件作用

主(zhu)电路外(wai)的(de)其它(ta)元(yuan)器(qi)件以及这些元(yuan)器(qi)件所起的(de)作用(yong),例如(ru)在下(xia)图中,主电(dian)路除用电(dian)器三相异步(bu)电(dian)动机外还有刀开关QK和(he)熔(rong)断器FU两个元件,刀开关QK是总电源开关,也就是使电路(lu)与电源相接通或断开的开关FU熔断器起到对(dui)电路(lu)短路(lu)的保护(hu)作(zuo)用,即电路(lu)发(fa)生短路(lu)时(shi),熔(rong)断器(qi)的熔(rong)体立即熔(rong)断,使负载与电源断开(kai)主电路(lu)中(zhong)各元器(qi)件和用电器(qi)一般情况(kuang)下都比辅助电路(lu)中(zhong)的控制元件要少,看主电路(lu)时(shi),可以顺着电源引(yin)入(ru)端朝下逐次观察(cha)。

主电路原理图识别.jpg

第四步,看配(pei)电(dian)电(dian)源等(deng)级

要了(le)解电(dian)源(yuan)的种(zhong)类和电(dian)压等级,电(dian)源(yuan)有直流电(dian)源(yuan)和交(jiao)流电(dian)源(yuan)两(liang)种(zhong)类型直(zhi)流(liu)电(dian)(dian)有(you)的(de)是直(zhi)流(liu)发电(dian)(dian)机供(gong)给,也有(you)的(de)是整流(liu)设备供(gong)给,直(zhi)流(liu)电(dian)(dian)源常见的(de)电(dian)(dian)压等级(ji)为660V、220v、110v、24V、12V等,交流电(dian)多数情下(xia)是(shi)由(you)三(san)相(xiang)交流电(dian)网供电(dian),有时(shi)也用(yong)交流发电(dian)机供电。交(jiao)流电源低电压(ya)等(deng)级有380V、220V、110V、36V、24V等(deng),频(pin)(pin)率多为(wei)50HZ(高频(pin)(pin)交流发电(dian)机发的交流电(dian)率不(bu)是50H)在(zai)图中电路电源来自(zi)小母线(xian)汇流排,电源为380V交流三相电,电压频率为50Hz。

以上就是识别配电(dian)柜(ju)(ju)内主电(dian)路原理图的(de)方法和步(bu)骤,配电(dian)柜(ju)(ju)用途不(bu)(bu)同,不(bu)(bu)现(xian)场合,其(qi)负载(zai)和柜(ju)(ju)内配置(zhi)也(ye)不(bu)(bu)相(xiang)同。但总的(de)来说,只有掌握(wo)了电(dian)路控制原理才能在(zai)以后的(de)电(dian)工操作过(guo)程中不(bu)(bu)出差(cha)错。方便安装和检修。


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