電(dian)力計量箱設備接(jie)線不(bu)(bu)妥(tuo)及維護不(bu)(bu)善

　　電(dian)(dian)(dian)(dian)力計量(liang)(liang)箱設備配置正確，并不一(yi)定(ding)能(neng)(neng)確保電(dian)(dian)(dian)(dian)力計量(liang)(liang)的(de)(de)精確。主要原因如(ru)下：1）現場(chang)接線(xian)(xian)過(guo)錯。比如(ru)低壓(ya)(ya)計量(liang)(liang)，時常發作電(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)進出(chu)反相；經過(guo)互感器接線(xian)(xian)的(de)(de)電(dian)(dian)(dian)(dian)度(du)(du)表相位(wei)過(guo)錯、逆相序(xu)等；2）電(dian)(dian)(dian)(dian)度(du)(du)表電(dian)(dian)(dian)(dian)壓(ya)(ya)回路(lu)、電(dian)(dian)(dian)(dian)流(liu)回路(lu)壓(ya)(ya)接不緊(jin)，致使回路(lu)電(dian)(dian)(dian)(dian)阻加大(da)，影(ying)響計量(liang)(liang)的(de)(de)精確性；3）在低壓(ya)(ya)計量(liang)(liang)箱中(zhong)運用共用零線(xian)(xian)；4）在變(bian)電(dian)(dian)(dian)(dian)站施工接線(xian)(xian)中(zhong)，沒有(you)嚴(yan)格區別電(dian)(dian)(dian)(dian)流(liu)互感器的(de)(de)維(wei)護級(ji)(ji)、測(ce)量(liang)(liang)級(ji)(ji)及計量(liang)(liang)級(ji)(ji)，維(wei)護級(ji)(ji)的(de)(de)過(guo)載(zai)能(neng)(neng)力高，但(dan)精度(du)(du)低，測(ce)量(liang)(liang)級(ji)(ji)一(yi)般(ban)是(shi)0.5級(ji)(ji)的(de)(de)，而計量(liang)(liang)級(ji)(ji)對(dui)于(yu)大(da)負荷的(de)(de)關(guan)口電(dian)(dian)(dian)(dian)度(du)(du)表一(yi)般(ban)是(shi)0.2S級(ji)(ji)的(de)(de)，假如(ru)不注(zhu)意區別，將會給電(dian)(dian)(dian)(dian)力計量(liang)(liang)箱形成(cheng)較(jiao)大(da)的(de)(de)誤差；5）對(dui)于(yu)低壓(ya)(ya)電(dian)(dian)(dian)(dian)度(du)(du)表，不注(zhu)意對(dui)電(dian)(dian)(dian)(dian)度(du)(du)表端(duan)子盒、接線(xian)(xian)盒進行防(fang)護，給竊電(dian)(dian)(dian)(dian)者留下竊電(dian)(dian)(dian)(dian)的(de)(de)空間。

　　其他方面。

　　1）區域內查表時刻不統一；2）表計(ji)計(ji)量倍率計(ji)算過錯等。

　　電力計量箱是用(yong)于(yu)(yu)3~35kv中用(yong)于(yu)(yu)電(dian)能計量的設備，包含組合互(hu)(hu)感(gan)器(qi)（收集(ji)三相電(dian)流及(ji)電(dian)壓(ya)信號(hao)）、箱體、電(dian)度(du)表、避雷器(qi)、真(zhen)空(kong)斷路器(qi)(預付費類有)等(deng)等(deng)，電(dian)流精度(du)為(wei)0.2S，電(dian)壓(ya)精度(du)等(deng)級(ji)為(wei)0.2。類型一般為(wei)JLSxx-xx(x替代實際字(zi)母)和組合互(hu)(hu)感(gan)器(qi)根(gen)本相同。

　　整個(ge)設(she)備(bei)(bei)(bei)外面沒(mei)有任何電(dian)(dian)(dian)纜，杜絕了從(cong)線(xian)纜上竊電(dian)(dian)(dian)的(de)可(ke)能(neng)性(xing)。旁邊(bian)面操控箱(xiang)(xiang)內含有電(dian)(dian)(dian)能(neng)表(biao)和負(fu)控設(she)備(bei)(bei)(bei)，表(biao)箱(xiang)(xiang)門(men)鎖可(ke)采用(yong)電(dian)(dian)(dian)子(zi)鎖密封箱(xiang)(xiang)體。負(fu)控設(she)備(bei)(bei)(bei)可(ke)收集(ji)記錄電(dian)(dian)(dian)能(neng)表(biao)的(de)負(fu)荷曲線(xian)，即分時電(dian)(dian)(dian)量和分時電(dian)(dian)(dian)壓、電(dian)(dian)(dian)流、功(gong)率等(deng)值，負(fu)控設(she)備(bei)(bei)(bei)不需要磁卡表(biao)，可(ke)與普通多功(gong)用(yong)電(dian)(dian)(dian)子(zi)表(biao)相結合實現(xian)長途預付費購(gou)電(dian)(dian)(dian)功(gong)用(yong)、負(fu)控功(gong)用(yong)、欠費斷電(dian)(dian)(dian)功(gong)用(yong)、繳(jiao)費長途提示功(gong)用(yong)、過(guo)負(fu)荷報(bao)警斷電(dian)(dian)(dian)功(gong)用(yong)、負(fu)荷過(guo)低(di)報(bao)警功(gong)用(yong)等(deng)，另外，負(fu)控設(she)備(bei)(bei)(bei)可(ke)監督(du)操控箱(xiang)(xiang)門(men)的(de)開關狀態(tai)，提供長途開門(men)報(bao)警功(gong)用(yong)，為供電(dian)(dian)(dian)營銷和防竊電(dian)(dian)(dian)作(zuo)業(ye)帶來極大方(fang)便。

　　預付費計量型(xing)可合作長途抄表(biao)系統(tong)等(deng)，便于抄表(biao)和報(bao)警，極(ji)大的方便了電(dian)力作業人員的統(tong)計作業。

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