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1、量程的確(que)定

為(wei)(wei)什么(me)首(shou)先要(yao)(yao)進行單相(xiang)(xiang)電(dian)(dian)度表量程的(de)確(que)定(ding)呢？為(wei)(wei)后(hou)期安全(quan)使用(yong)需要(yao)(yao)保證(zheng)被(bei)測(ce)電(dian)(dian)度表電(dian)(dian)流不(bu)超過最大測(ce)量值。單相(xiang)(xiang)電(dian)(dian)度表的(de)配(pei)置需根據負債功率而定(ding)，單相(xiang)(xiang)電(dian)(dian)器(qi)電(dian)(dian)流每千瓦4.5A，那么(me)電(dian)(dian)表量程就(jiu)要(yao)(yao)配(pei)置為(wei)(wei)電(dian)(dian)流的(de)1.2-1.5倍(bei)。假如(ru)：一家(jia)庭電(dian)(dian)器(qi)的(de)總(zong)功率為(wei)(wei)4KW，電(dian)(dian)流為(wei)(wei)18A，可以選用(yong)5（20）A單相(xiang)(xiang)電(dian)(dian)度表。

單相(xiang)電(dian)(dian)(dian)(dian)度(du)表(biao)一(yi)(yi)般(ban)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)規(gui)(gui)格是(shi)220V，電(dian)(dian)(dian)(dian)流(liu)規(gui)(gui)格有1.5（6）A、5（20）A、5（60）A、15（60）A、20（80）A等。電(dian)(dian)(dian)(dian)流(liu)規(gui)(gui)格的(de)(de)(de)(de)選擇主要(yao)在(zai)于(yu)用戶(hu)的(de)(de)(de)(de)負(fu)荷，一(yi)(yi)般(ban)負(fu)荷電(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)上(shang)限(xian)不能超過電(dian)(dian)(dian)(dian)度(du)表(biao)的(de)(de)(de)(de)額定電(dian)(dian)(dian)(dian)流(liu)，下限(xian)不低于(yu)電(dian)(dian)(dian)(dian)度(du)表(biao)允許誤差范圍以(yi)內規(gui)(gui)定的(de)(de)(de)(de)負(fu)荷電(dian)(dian)(dian)(dian)流(liu)。如：用戶(hu)的(de)(de)(de)(de)用電(dian)(dian)(dian)(dian)總功率大概在(zai)10KW，電(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)220V，電(dian)(dian)(dian)(dian)流(liu)就(jiu)是(shi)10000÷220≈46A，也就(jiu)是(shi)說，用電(dian)(dian)(dian)(dian)功率除220，得(de)到就(jiu)是(shi)電(dian)(dian)(dian)(dian)流(liu)值大概是(shi)46A，考慮到要(yao)預留一(yi)(yi)定的(de)(de)(de)(de)余量，可以(yi)選用5（60）、15（60）A的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)規(gui)(gui)格。也可以(yi)選擇小一(yi)(yi)點(dian)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)規(gui)(gui)格，再(zai)接(jie)上(shang)電(dian)(dian)(dian)(dian)流(liu)互感器就(jiu)行了。

電(dian)(dian)流互感器(qi)是(shi)(shi)(shi)為(wei)了哪些電(dian)(dian)流大(da)的(de)(de)用(yong)戶(hu)選(xuan)用(yong)，可(ke)以將數值(zhi)較大(da)的(de)(de)一(yi)(yi)次(ci)電(dian)(dian)流通(tong)過一(yi)(yi)定(ding)的(de)(de)轉(zhuan)換為(wei)數值(zhi)較小的(de)(de)二(er)次(ci)電(dian)(dian)流，用(yong)來(lai)保(bao)護和測量(liang)等(deng)用(yong)途。例如(ru)100/5的(de)(de)電(dian)(dian)流互感器(qi)可(ke)以將100A社為(wei)電(dian)(dian)流轉(zhuan)變(bian)為(wei)5A的(de)(de)電(dian)(dian)流。電(dian)(dian)流互感器(qi)的(de)(de)規格的(de)(de)選(xuan)擇(ze)，主要(yao)是(shi)(shi)(shi)針對低壓(ya)用(yong)戶(hu)，低壓(ya)用(yong)戶(hu)因為(wei)用(yong)電(dian)(dian)負載可(ke)能(neng)隨(sui)意有(you)變(bian)化用(yong)電(dian)(dian)量(liang)估(gu)算不準，所以互感器(qi)規格也不好(hao)固定(ding)選(xuan)擇(ze)，通(tong)常是(shi)(shi)(shi)根據已知用(yong)電(dian)(dian)功(gong)(gong)率來(lai)計算。例如(ru)，用(yong)電(dian)(dian)功(gong)(gong)率是(shi)(shi)(shi)100KW的(de)(de)用(yong)戶(hu)，電(dian)(dian)壓(ya)是(shi)(shi)(shi)220V，電(dian)(dian)流約等(deng)于100000÷220≈455A，還需(xu)考(kao)慮到預留(liu)一(yi)(yi)定(ding)的(de)(de)余量(liang)，需(xu)要(yao)選(xuan)擇(ze)500A的(de)(de)電(dian)(dian)流互感器(qi)，互感器(qi)的(de)(de)二(er)次(ci)輸出電(dian)(dian)流一(yi)(yi)般是(shi)(shi)(shi)5A，所以就(jiu)選(xuan)擇(ze)500比(bi)5的(de)(de)互感器(qi)，關于電(dian)(dian)流互感器(qi)的(de)(de)精(jing)度，需(xu)要(yao)至少和電(dian)(dian)表處于同一(yi)(yi)個等(deng)級。

二(er)、關(guan)于我們

天(tian)津市三源申特(te)電氣設備銷售有限(xian)公司堅(jian)持以(yi)研(yan)制開發為基石、以(yi)銷售為龍(long)頭、以(yi)生產(chan)為軸心(xin)的經(jing)營理(li)念，逐步形成了(le)以(yi)科技為基礎、以(yi)市場為向導、以(yi)質量(liang)為根(gen)本、以(yi)制度為保證的管理(li)體系。

目前天津(jin)市三源申(shen)特電氣設備銷(xiao)售有(you)限公司的產品已經銷(xiao)往各地，主要(yao)銷(xiao)往天津(jin)、新疆、江蘇、吉(ji)林(lin)、河南、河北、山(shan)東、山(shan)西等地區，并出口(kou)到非洲。

我們的主(zhu)營產品有：智能(neng)電表、智(zhi)能水表、三(san)相智(zhi)能電表、單相智(zhi)能電表(biao)、導軌(gui)式(shi)智(zhi)能電表、燃氣智(zhi)能(neng)電表(biao)、智能熱量表

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