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油箱(xiang)加(jia)熱器(qi) SRYA AC380V 4kW
油箱(xiang)加(jia)熱器(qi) SRYA AC380V 4kW並(bing)聯分(fen)流(liu),主線(xian)路(lu)上(shang)的電流等於(yu)各電(dian)路(lu)電流(liu)之和。電容器(qi)並(bing)聯的意(yi)義:並(bing)聯電(dian)容器(qi)又(you)稱移相電容(rong)器(qi),主要(yao)用(yong)償(chang)電力(li)網(wang)系統(tong)感性(xing)負荷的無功(gong)功(gong)率,以(yi)提(ti)高功(gong)率因數,改(gai)善(shan)電(dian)量,降低(di)線(xian)路(lu)損耗(hao)。也(ye)有穩(wen)定工(gong)作電路(lu)的作用,電容器(qi)並(bing)聯後(hou)
| 品牌 | 萬安電熱電器(qi) |
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油(you)箱(xiang)加(jia)熱器(qi) SRYA AC380V 4kW概(gai)述(shu)：
電(dian)工(gong)電路(lu)識圖(tu)、布(bu)線(xian)、接線(xian)與維修
nF=1000F)但是(shi)很少(shao)見1lnF。若要(yao)調(tiao)試壹(yi)個振(zhen)蕩電路(lu)
要1lnF,就可通(tong)過兩只(zhi)22nF的電容器(qi)進(jin)行串聯得(de)到(dao)1n
關於極性(xing)電(dian)容(rong)器(qi)的串聯:兩(liang)只(zhi)有極(ji)性(xing)電(dian)容(rong)器(qi)的正極(ji)或(huo)
起(qi)相串(chuan)聯(壹(yi)般為同(tong)耐(nai)壓、同(tong)容(rong)量的電容器(qi))時(shi),
部少(shao)
電(dian)容(rong)器(qi)使(shi)用(yong)。其(qi)容量為單只(zhi)電(dian)容(rong)器(qi)的12,耐壓為單只(zhi)電(dian)效(xiao)電(dian)
壓值。
容
(2)電(dian)容器(qi)的並(bing)聯使(shi)用(yong)兩(liang)個電(dian)容(rong)器(qi)兩(liang)端(duan)並(bing)接稱(cheng)為並(bing)聯
後(hou)電容(rong)器(qi)的容量是(shi)這兩(liang)只(zhi)電(dian)容(rong)器(qi)容(rong)量之和(he),即(ji)C=C1+C
並(bing)聯時(shi),電容(rong)器(qi)的耐壓值與原電容器(qi)相(xiang)同(tong)或(huo)高(gao)於原電容器(qi)
電(dian)容器(qi)並(bing)聯方(fang)式(shi)與電阻器(qi)並(bing)聯方(fang)式(shi)是(shi)壹樣的,兩只(zhi)以(yi)上(shang)
采(cai)用(yong)並(bing)接方(fang)式(shi)與電源連接構(gou)成(cheng)壹(yi)個並(bing)聯電(dian)路(lu),如圖(tu)2-33所(suo)示(shi)
圖(tu)2-33電(dian)容器(qi)的並(bing)聯示(shi)意(yi)圖(tu)
電(dian)容器(qi)的並(bing)聯同(tong)樣與電阻器(qi)的並(bing)聯在(zai)某方面很(hen)相似。同(tong)樣
電(dian)容器(qi)本(ben)身的特性(xing),電(dian)容(rong)器(qi)並(bing)聯電(dian)路(lu)具(ju)有以(yi)下*的特性(xing):
①由(you)於(yu)電(dian)容(rong)器(qi)的隔直作用,所(suo)有參(can)與電容器(qi)並(bing)聯的電路(lu)均(jun)
能(neng)通(tong)過直流(liu)電(dian)流,也(ye)就是(shi)相當於(yu)對(dui)直流形(xing)同(tong)開(kai)路(lu)。
②電容(rong)器(qi)並(bing)聯電(dian)路(lu)中(zhong)各電(dian)容器(qi)兩(liang)端(duan)的電壓相(xiang)等(deng),這是(shi)絕
數並(bing)聯電(dian)路(lu)的公(gong)共特性(xing)
③隨著並(bing)聯電(dian)容器(qi)數量的增加,電(dian)容(rong)量會越(yue)來越大。並(bing)
路(lu)的電容量等於(yu)各電(dian)容器(qi)電(dian)容量之和(he)。
④在(zai)並(bing)聯電(dian)路(lu)中(zhong)電容(rong)量大的電容器(qi)往(wang)往起關鍵作用。因
容(rong)量大的電容器(qi)容(rong)抗小,當壹(yi)只(zhi)電(dian)容(rong)器(qi)的容抗遠(yuan)大於另(ling)壹只(zhi)電(dian)
時(shi),相(xiang)當於(yu)開(kai)路(lu)
⑤油箱(xiang)加(jia)熱器(qi) SRYA AC380V 4kW並(bing)聯分(fen)流(liu),主線(xian)路(lu)上(shang)的電流等於(yu)各電(dian)路(lu)電流(liu)之和。
電容器(qi)並(bing)聯的意(yi)義:並(bing)聯電(dian)容器(qi)又(you)稱移相電容(rong)器(qi),主要(yao)用(yong)
償(chang)電力(li)網(wang)系統(tong)感性(xing)負荷的無功(gong)功(gong)率,以(yi)提(ti)高功(gong)率因數,改(gai)善(shan)電(dian)
量,降低(di)線(xian)路(lu)損耗(hao)。也(ye)有穩(wen)定工(gong)作電路(lu)的作用,電容器(qi)並(bing)聯後(hou) 等於(yu)它們(men)的容量相加(jia),但是(shi)效(xiao)果比使(shi)用(yong)壹(yi)只(zhi)電(dian)容(rong)器(qi)好,電容器(qi)內(nei)
通常是(shi)金屬(shu)壹圈(quan)壹(yi)圈(quan)纏(chan)繞的,電容量越大則金(jin)屬(shu)圈(quan)越(yue)多(duo),這(zhe)樣等(deng)
效(xiao)電(dian)感(gan)就越大。而用(yong)多(duo)個小(xiao)容(rong)量的電容器(qi)並(bing)聯方(fang)式(shi)獲(huo)得(de)等(deng)效(xiao)的大電第(di)
溶(rong),則可(ke)以(yi)有效(xiao)地(di)減少(shao)電(dian)感(gan)的分(fen)布(bu)
(3)電容器(qi)的混聯使(shi)用(yong)電(dian)容
器(qi)的混聯電(dian)路(lu)是(shi)由電(dian)容器(qi)的串聯與
並(bing)聯混聯在(zai)壹起(qi)形(xing)成(cheng)的,如圖(tu)2-34
所(suo)示(shi)。
在(zai)分(fen)析(xi)電容器(qi)的混聯電(dian)路(lu)時,
圖(tu)2-34電(dian)容器(qi)的混聯示(shi)意(yi)圖(tu)
可(ke)以先把並(bing)聯電(dian)路(lu)中(zhong)各個(ge)電容(rong)器(qi)等(deng)效(xiao)成(cheng)壹(yi)個(ge)電(dian)容(rong)器(qi),然(ran)後用等效(xiao)電(dian)
容(rong)器(qi)與另壹電容(rong)器(qi)進(jin)行串聯分(fen)析(xi)。
回都(dou)回
24.3電(dian)容(rong)器(qi)的代(dai)換(huan)
電(dian)容器(qi)檢測可掃二維碼學(xue)習(xi)。回
電(dian)容(rong)器(qi)損(sun)壞形(xing)式(shi)多(duo)種(zhong)多(duo)樣,如(ru)擊穿(chuan)、
漏液(ye)、燒焦、引(yin)腳折(zhe)斷等(deng)。大多數情(qing)況(kuang)下,電(dian)容器(qi)損(sun)壞後都(dou)不能(neng)修
復(fu),只(zhi)有電(dian)容器(qi)引(yin)腳折斷可(ke)以通過重新焊接繼(ji)續(xu)使(shi)用(yong)。電(dian)容器(qi)配件(jian)
相當豐(feng)富(fu),選配也比(bi)較方便,原(yuan)則上(shang)應使(shi)用(yong)與其類型(xing)相同(tong)、主要(yao)參(can)
數相(xiang)同(tong)、外形(xing)尺(chi)寸相近(jin)的電容器(qi)來更換(huan)。若(ruo)找不到原(yuan)配件(jian)或同(tong)類(lei)型(xing)
電容(rong)器(qi),也(ye)可用其他類(lei)型(xing)的電容器(qi)進(jin)行代(dai)換(huan)。
(1)普(pu)通(tong)電容器(qi)的代(dai)換(huan)普(pu)通(tong)電容器(qi)在(zai)選用(yong)與代(dai)換(huan)時(shi)其標稱容(rong)
量、允(yun)許偏(pian)差、額(e)定(ding)工(gong)作電壓、絕(jue)緣(yuan)電(dian)阻(zu)、外形(xing)尺(chi)寸等都(dou)要符合(he)應
用(yong)電路(lu)的要求。玻(bo)璃釉(you)電容器(qi)與雲母電容器(qi)壹(yi)般用於高頻(pin)電(dian)路(lu)和超(chao)
高頻電路(lu):滌(di)綸(lun)電(dian)容(rong)器(qi)壹(yi)般用於中(zhong)低(di)頻電路(lu):聚苯乙烯(xi)電容(rong)器(qi)壹(yi)般
用於音響(xiang)電(dian)路(lu)和高(gao)壓脈(mai)沖(chong)電路(lu);聚丙(bing)烯電容器(qi)壹(yi)般用於直流(liu)電(dian)路(lu)
高頻(pin)脈沖(chong)電路(lu):Ⅱ類瓷(ci)介電容器(qi)常用(yong)於中(zhong)低(di)頻電路(lu),而Ⅲ類(lei)瓷(ci)介電
容器(qi)只(zhi)能(neng)用(yong)於(yu)低(di)頻電路(lu)。
(2)電解(jie)電(dian)容(rong)器(qi)的代(dai)換(huan)電(dian)解(jie)電(dian)容(rong)器(qi)中(zhong)的非固(gu)體鉭電(dian)解(jie)電(dian)容(rong)器(qi)
般(ban)用於通信設備(bei)及高精密電(dian)子(zi)設(she)備(bei)電(dian)路(lu);鋁電(dian)解(jie)電(dian)容(rong)器(qi)壹(yi)般用
電源電(dian)路(lu)、中(zhong)頻電(dian)路(lu)、低(di)頻電路(lu):無極(ji)性(xing)電(dian)解(jie)電(dian)容(rong)器(qi)壹(yi)般用於音
分(fen)頻(pin)電路(lu)、電視(shi)機(ji)的幀(zhen)校(xiao)正電(dian)路(lu)、電動(dong)機(ji)啟(qi)動(dong)電(dian)路(lu)。對(dui)於壹般電(dian)
