一、什么是三相多功能電力儀表
三相多功能電力儀(yi)(yi)表是一種具(ju)有可(ke)編程測量(liang)(liang)、顯示、數(shu)字通訊和電能脈(mo)沖變(bian)送輸出等多功能智(zhi)能儀(yi)(yi)表,能夠完成電量(liang)(liang)測量(liang)(liang)、電能計量(liang)(liang)、數(shu)據(ju)顯示、采集及傳輸,可(ke)廣泛應用變(bian)電站自(zi)動化(hua)、配電自(zi)動化(hua)、智(zhi)能建筑、企(qi)業內部的電能測量(liang)(liang)、管理、考核(he)。
二、三相多功能電力儀表怎么使用
三相多功(gong)能電(dian)(dian)(dian)力儀表是一(yi)種用于測量電(dian)(dian)(dian)力參(can)數(shu)的設備,它可以測量電(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)流(liu)、功(gong)率(lv)、功(gong)率(lv)因數(shu)、電(dian)(dian)(dian)能等多種參(can)數(shu),使(shi)用三項多功(gong)能電(dian)(dian)(dian)力儀表的方法如下:
1、安裝方法
(1)在固定的配(pei)電柜上(shang),選擇合適的地方開一個開孔尺(chi)寸(cun)的安(an)裝孔。
(2)取出(chu)儀表,松(song)開定位螺絲,取下固(gu)定夾。
(3)將(jiang)儀表(biao)安裝插入(ru)配電(dian)柜(ju)的儀表(biao)孔中。
(4)插入儀表的固(gu)定(ding)(ding)夾(jia),固(gu)定(ding)(ding)定(ding)(ding)位螺絲(si)。
2、接線方法
三相(xiang)多功(gong)能電(dian)(dian)(dian)力儀表(biao)的接(jie)線(xian)(xian)(xian)(xian)(xian)方法一般分(fen)為兩種:直(zhi)接(jie)接(jie)線(xian)(xian)(xian)(xian)(xian)和互(hu)感(gan)器接(jie)線(xian)(xian)(xian)(xian)(xian)。直(zhi)接(jie)接(jie)線(xian)(xian)(xian)(xian)(xian)是將電(dian)(dian)(dian)力儀表(biao)的電(dian)(dian)(dian)源線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)流線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)壓線(xian)(xian)(xian)(xian)(xian)直(zhi)接(jie)接(jie)入電(dian)(dian)(dian)源、負(fu)載等電(dian)(dian)(dian)路中,適用于小功(gong)率電(dian)(dian)(dian)路。互(hu)感(gan)器接(jie)線(xian)(xian)(xian)(xian)(xian)是將電(dian)(dian)(dian)力儀表(biao)的電(dian)(dian)(dian)源線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)流線(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)壓線(xian)(xian)(xian)(xian)(xian)分(fen)別(bie)接(jie)入互(hu)感(gan)器中,再將互(hu)感(gan)器接(jie)入電(dian)(dian)(dian)源、負(fu)載等電(dian)(dian)(dian)路中,適用于大功(gong)率電(dian)(dian)(dian)路。
3、參數設置
在使用(yong)三相多(duo)功(gong)能(neng)電(dian)力儀表之前,需要對其進行(xing)參數(shu)設置。參數(shu)設置包括電(dian)壓、電(dian)流、功(gong)率(lv)因數(shu)、電(dian)能(neng)等參數(shu)的(de)設定(ding)。一(yi)般情況下,電(dian)力儀表會有一(yi)個菜(cai)單(dan)界面,用(yong)戶(hu)可以通過(guo)菜(cai)單(dan)界面進行(xing)參數(shu)設置。
4、數據讀取
三相多功(gong)能(neng)電(dian)(dian)力儀表可以通(tong)(tong)過顯示屏顯示電(dian)(dian)壓、電(dian)(dian)流、功(gong)率、功(gong)率因(yin)數、電(dian)(dian)能(neng)等參數的數值。此外,電(dian)(dian)力儀表還可以通(tong)(tong)過通(tong)(tong)訊接口(kou)將(jiang)數據傳輸到計(ji)算機(ji)等設備中,以便進行(xing)數據分(fen)析和處理(li)。
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注意的事項有很(hen)多,包括:
1、使用前,儀表需通電15分(fen)鐘(zhong)。
2、注意防止(zhi)震動和(he)沖擊,不要在(zai)有(you)超(chao)量(liang)灰塵和(he)超(chao)量(liang)有(you)害氣體的地方使用。
3、輸(shu)(shu)入(ru)導(dao)線不宜過長,如被測信號輸(shu)(shu)入(ru)端較長時請試用雙絞屏(ping)蔽線。
4、若(ruo)信號伴(ban)隨高(gao)頻干擾,應在線里試用(yong)低頻過濾器。
5、長時間存放未使用(yong)時,請每三個月通電(dian)一(yi)次不少于4小時。
6、長(chang)期保存應避開直(zhi)射(she)光線,宜(yi)存放在(zai)環境(jing)溫度-25°C~55°C.
7、如(ru)儀(yi)表無顯示,應先(xian)檢查輔(fu)助電源,電壓(ya)是否在范圍內。
8、如顯示不正常(chang),檢查輸入信號(hao)(hao)是否正常(chang)及信號(hao)(hao)接線端是否擰(ning)緊。
9、除非PT有足夠功率(lv),否則不能使用PT信號同時作為輔助電源,以保(bao)證(zheng)儀表正(zheng)常工作。
10、CT回路中的電流(liu)接(jie)線(xian)端(duan)子螺絲務必(bi)擰(ning)緊,保證(zheng)進(jin)/出線(xian)接(jie)觸(chu)可(ke)靠,以免產(chan)生(sheng)故障。
11、若要校(xiao)驗儀表,校(xiao)驗儀器應優于0.1級,才能保證(zheng)校(xiao)驗精(jing)度。