一、什么是三相多功能電力儀表

三相多功能電力儀表是一種具有(you)可編程測量(liang)(liang)、顯示(shi)、數字通訊和電能脈沖變送輸出等多功能智能儀表，能夠完成電量(liang)(liang)測量(liang)(liang)、電能計(ji)量(liang)(liang)、數據(ju)顯示(shi)、采集及(ji)傳(chuan)輸，可廣泛應用變電站自(zi)動化、配電自(zi)動化、智能建筑、企業(ye)內部的電能測量(liang)(liang)、管(guan)理、考核。

二、三相多功能電力儀表怎么使用

三(san)相多(duo)功能電(dian)(dian)力儀表(biao)是(shi)一種(zhong)用于測量電(dian)(dian)力參(can)(can)數的設(she)備，它可以測量電(dian)(dian)壓(ya)、電(dian)(dian)流、功率、功率因數、電(dian)(dian)能等(deng)多(duo)種(zhong)參(can)(can)數，使用三(san)項多(duo)功能電(dian)(dian)力儀表(biao)的方法如下：

1、安裝方法

（1）在固定(ding)的(de)配電柜上，選擇合適的(de)地方開一個開孔(kong)尺寸的(de)安(an)裝孔(kong)。

（2）取出儀(yi)表(biao)，松開(kai)定(ding)位螺絲(si)，取下固(gu)定(ding)夾。

（3）將儀表(biao)安裝插入配電柜的(de)儀表(biao)孔(kong)中。

（4）插入儀表的固定(ding)夾，固定(ding)定(ding)位螺絲。

2、接線方法

三(san)相(xiang)多(duo)功能電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力儀表(biao)的接(jie)(jie)線(xian)方法(fa)一般分為(wei)兩種(zhong)：直(zhi)接(jie)(jie)接(jie)(jie)線(xian)和(he)互感(gan)(gan)器接(jie)(jie)線(xian)。直(zhi)接(jie)(jie)接(jie)(jie)線(xian)是(shi)將電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力儀表(biao)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源線(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓線(xian)直(zhi)接(jie)(jie)接(jie)(jie)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源、負(fu)載(zai)等電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中，適(shi)用于小功率(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。互感(gan)(gan)器接(jie)(jie)線(xian)是(shi)將電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力儀表(biao)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源線(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓線(xian)分別接(jie)(jie)入(ru)互感(gan)(gan)器中，再將互感(gan)(gan)器接(jie)(jie)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源、負(fu)載(zai)等電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中，適(shi)用于大功率(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。

3、參數設置

在使用三相(xiang)多功(gong)(gong)能電(dian)力儀表(biao)之前，需要對其(qi)進行參數(shu)設置。參數(shu)設置包括電(dian)壓、電(dian)流、功(gong)(gong)率因數(shu)、電(dian)能等參數(shu)的設定。一(yi)般情況下，電(dian)力儀表(biao)會有一(yi)個菜單界面，用戶可以通(tong)過(guo)菜單界面進行參數(shu)設置。

4、數據讀取

三(san)相多功能電(dian)力儀(yi)表(biao)(biao)可以通過顯示(shi)屏顯示(shi)電(dian)壓(ya)、電(dian)流、功率、功率因數、電(dian)能等參數的(de)數值。此(ci)外，電(dian)力儀(yi)表(biao)(biao)還(huan)可以通過通訊(xun)接口將數據傳輸到計(ji)算機等設備中，以便進行數據分析和(he)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注(zhu)意的事項有(you)很多，包括(kuo)：

1、使用(yong)前，儀表需(xu)通電(dian)15分鐘。

2、注意防止震動和沖(chong)擊，不要(yao)在(zai)有(you)超(chao)(chao)量(liang)灰塵和超(chao)(chao)量(liang)有(you)害(hai)氣(qi)體的(de)地方使用。

3、輸(shu)入(ru)(ru)導(dao)線不宜(yi)過(guo)長，如被測信號輸(shu)入(ru)(ru)端較長時請試用雙絞屏蔽線。

4、若信號伴隨高(gao)頻干擾，應(ying)在線里(li)試用(yong)低頻過濾(lv)器。

5、長(chang)時間存放未使用時，請每三個月通電(dian)一(yi)次不少于4小時。

6、長期(qi)保存應(ying)避開直射(she)光線，宜存放(fang)在環境溫度(du)-25°C~55°C.

7、如儀表無顯示，應先檢查(cha)輔助電(dian)源，電(dian)壓是否在范圍內。

8、如(ru)顯(xian)示不正(zheng)常，檢查輸入(ru)信(xin)號是(shi)否正(zheng)常及信(xin)號接線端是(shi)否擰緊。

9、除非PT有(you)足夠功率，否則不能(neng)使用(yong)PT信號(hao)同時作為輔助電(dian)源，以保證儀(yi)表正常工作。

10、CT回路中的電流接線端(duan)子螺絲務必擰(ning)緊，保證(zheng)進/出線接觸可靠(kao)，以免產(chan)生故障。

11、若(ruo)要校驗儀(yi)表，校驗儀(yi)器應優于0.1級(ji)，才能保證校驗精度(du)。