一、什么是三相多功能電力儀表
三相多(duo)功能(neng)(neng)電(dian)(dian)力儀(yi)表(biao)是一種具(ju)有可(ke)編程測量(liang)、顯示、數(shu)字(zi)通訊和(he)電(dian)(dian)能(neng)(neng)脈沖變(bian)送輸出等多(duo)功能(neng)(neng)智能(neng)(neng)儀(yi)表(biao),能(neng)(neng)夠完成電(dian)(dian)量(liang)測量(liang)、電(dian)(dian)能(neng)(neng)計量(liang)、數(shu)據顯示、采集及傳(chuan)輸,可(ke)廣(guang)泛應用變(bian)電(dian)(dian)站自動化、配電(dian)(dian)自動化、智能(neng)(neng)建筑、企(qi)業(ye)內部(bu)的(de)電(dian)(dian)能(neng)(neng)測量(liang)、管理(li)、考核。
二、三相多功能電力儀表怎么使用
三相多功能(neng)電(dian)(dian)(dian)(dian)力儀表是一種(zhong)用于測(ce)量(liang)電(dian)(dian)(dian)(dian)力參數的設備,它可以測(ce)量(liang)電(dian)(dian)(dian)(dian)壓、電(dian)(dian)(dian)(dian)流、功率、功率因數、電(dian)(dian)(dian)(dian)能(neng)等(deng)多種(zhong)參數,使用三項多功能(neng)電(dian)(dian)(dian)(dian)力儀表的方(fang)法如(ru)下:
1、安裝方法
(1)在固定的(de)配電柜上,選(xuan)擇合適的(de)地方開(kai)一個(ge)開(kai)孔(kong)尺寸(cun)的(de)安裝(zhuang)孔(kong)。
(2)取(qu)出儀表(biao),松開定位螺(luo)絲,取(qu)下固定夾(jia)。
(3)將儀(yi)表安裝插入配電柜的儀(yi)表孔中。
(4)插入儀表的固(gu)定夾(jia),固(gu)定定位螺(luo)絲(si)。
2、接線方法
三(san)相多功能電(dian)(dian)(dian)(dian)力儀表(biao)的(de)接(jie)(jie)線(xian)(xian)方法一般分為兩種:直接(jie)(jie)接(jie)(jie)線(xian)(xian)和互感(gan)器(qi)(qi)接(jie)(jie)線(xian)(xian)。直接(jie)(jie)接(jie)(jie)線(xian)(xian)是將電(dian)(dian)(dian)(dian)力儀表(biao)的(de)電(dian)(dian)(dian)(dian)源線(xian)(xian)、電(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)、電(dian)(dian)(dian)(dian)壓線(xian)(xian)直接(jie)(jie)接(jie)(jie)入電(dian)(dian)(dian)(dian)源、負(fu)載等電(dian)(dian)(dian)(dian)路中,適用(yong)于(yu)小功率電(dian)(dian)(dian)(dian)路。互感(gan)器(qi)(qi)接(jie)(jie)線(xian)(xian)是將電(dian)(dian)(dian)(dian)力儀表(biao)的(de)電(dian)(dian)(dian)(dian)源線(xian)(xian)、電(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)、電(dian)(dian)(dian)(dian)壓線(xian)(xian)分別接(jie)(jie)入互感(gan)器(qi)(qi)中,再(zai)將互感(gan)器(qi)(qi)接(jie)(jie)入電(dian)(dian)(dian)(dian)源、負(fu)載等電(dian)(dian)(dian)(dian)路中,適用(yong)于(yu)大功率電(dian)(dian)(dian)(dian)路。
3、參數設置
在(zai)使用(yong)三相多功能電(dian)(dian)力儀表之前,需要對其(qi)進(jin)行參(can)數設置(zhi)。參(can)數設置(zhi)包括(kuo)電(dian)(dian)壓、電(dian)(dian)流、功率因數、電(dian)(dian)能等參(can)數的(de)設定。一般情況(kuang)下,電(dian)(dian)力儀表會(hui)有(you)一個菜單界面,用(yong)戶可以通(tong)過菜單界面進(jin)行參(can)數設置(zhi)。
4、數據讀取
三相多功能(neng)電(dian)力(li)儀(yi)表可以(yi)通過顯示屏顯示電(dian)壓、電(dian)流、功率、功率因數(shu)、電(dian)能(neng)等參數(shu)的數(shu)值。此(ci)外,電(dian)力(li)儀(yi)表還(huan)可以(yi)通過通訊接口將數(shu)據傳(chuan)輸到計算機等設備中,以(yi)便進行數(shu)據分析和處理。
三、多功能電力儀表使用說明及注意事項
多功能電力儀表使用要(yao)注意的(de)事項有很多,包括:
1、使用前,儀表需通電15分鐘。
2、注(zhu)意防止震動(dong)和沖擊,不(bu)要在有超量灰塵(chen)和超量有害氣(qi)體的地方使(shi)用。
3、輸入(ru)(ru)導(dao)線(xian)不宜過長,如被測信號輸入(ru)(ru)端較(jiao)長時請(qing)試用雙絞(jiao)屏蔽線(xian)。
4、若信號(hao)伴(ban)隨高頻干擾(rao),應在線里試用低頻過濾器(qi)。
5、長時(shi)間存放未使(shi)用時(shi),請每(mei)三個月(yue)通電一(yi)次不少于(yu)4小時(shi)。
6、長期保(bao)存(cun)應避(bi)開直(zhi)射(she)光(guang)線,宜存(cun)放在環境溫度-25°C~55°C.
7、如儀表無顯示,應先(xian)檢查輔助電(dian)源,電(dian)壓是(shi)否在范圍內。
8、如顯示不正(zheng)常,檢查輸入信號是否正(zheng)常及信號接(jie)線(xian)端是否擰緊。
9、除非PT有足(zu)夠功(gong)率,否(fou)則(ze)不能使(shi)用PT信號(hao)同(tong)時作(zuo)為輔助電(dian)源,以保(bao)證儀(yi)表正常(chang)工作(zuo)。
10、CT回(hui)路中(zhong)的電流接(jie)線(xian)端子(zi)螺絲務(wu)必(bi)擰緊,保證進/出線(xian)接(jie)觸可靠,以(yi)免產生(sheng)故障。
11、若要校驗(yan)(yan)儀表,校驗(yan)(yan)儀器應優于0.1級,才能保(bao)證(zheng)校驗(yan)(yan)精度。