智能負荷開關技術要求符合IEC62055-31：2005，智能負荷開關類型選擇Uc2。三相智能負荷開關應采用一體化設計。

　　（1）采用內(nei)置智能(neng)負荷開關(guan)的(de)電能(neng)表(biao)進行(xing)開關(guan)操作(zuo)(zuo)時應(ying)有相應(ying)的(de)硬件或軟(ruan)件的(de)消(xiao)弧措施(shi)，其出口回路應(ying)有防誤動作(zuo)(zuo)和便(bian)于(yu)現(xian)場測試(shi)的(de)安全(quan)措施(shi)。電能(neng)表(biao)在擴展(zhan)的(de)工作(zuo)(zuo)電壓范(fan)圍內(nei)，智能(neng)負荷開關(guan)應(ying)能(neng)正常工作(zuo)(zuo)。

　　（2）采(cai)用外(wai)置智(zhi)能負(fu)荷(he)開(kai)關的(de)電(dian)能表可(ke)采(cai)取以(yi)下兩種(zhong)方式之(zhi)一實現對外(wai)置智(zhi)能負(fu)荷(he)開(kai)關的(de)控制。

　　a.從電(dian)能表跳閘控(kong)制端子5和6（三相(xiang)電(dian)能表為13、14和15）輸出一對(dui)（三相(xiang)為兩組）無源無*性控(kong)制開關信號，開關節點(dian)容量為交流250V、2A。開關節點(dian)的非(fei)激(ji)勵(li)態為閉合(he)，激(ji)勵(li)態為斷(duan)開（亦可由供需雙(shuang)方協(xie)議商定）。當控(kong)制開關處(chu)于非(fei)激(ji)勵(li)態時，外置智能負荷開關閉合(he)，允許用戶用電(dian)；當控(kong)制開關處(chu)于激(ji)勵(li)態時，外置智能負荷開關斷(duan)開，中斷(duan)用戶供電(dian)。

　　b.從電(dian)(dian)(dian)(dian)能(neng)(neng)表(biao)跳(tiao)閘控(kong)制端(duan)子5（三(san)相(xiang)電(dian)(dian)(dian)(dian)能(neng)(neng)表(biao)為(wei)13）直接輸出(chu)一個交流電(dian)(dian)(dian)(dian)壓控(kong)制信(xin)(xin)號(hao)，該控(kong)制信(xin)(xin)號(hao)引自該電(dian)(dian)(dian)(dian)能(neng)(neng)表(biao)供電(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)相(xiang)線(xian)，驅動能(neng)(neng)力(li)應(ying)(ying)不(bu)小于(yu)20mA。控(kong)制信(xin)(xin)號(hao)的(de)非激勵(li)(li)態輸出(chu)電(dian)(dian)(dian)(dian)壓應(ying)(ying)為(wei)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓的(de)90%至***，激勵(li)(li)態輸出(chu)電(dian)(dian)(dian)(dian)壓應(ying)(ying)為(wei)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓的(de)0%至25%。當控(kong)制信(xin)(xin)號(hao)處(chu)于(yu)非激勵(li)(li)態時(shi)，外置智能(neng)(neng)負(fu)荷開(kai)關(guan)閉合，允(yun)許(xu)用(yong)(yong)戶用(yong)(yong)電(dian)(dian)(dian)(dian)；當控(kong)制信(xin)(xin)號(hao)處(chu)于(yu)激勵(li)(li)態時(shi)，外置智能(neng)(neng)負(fu)荷開(kai)關(guan)斷開(kai)，中斷用(yong)(yong)戶供電(dian)(dian)(dian)(dian)。表(biao)內的(de)跳(tiao)閘控(kong)制開(kai)關(guan)宜采用(yong)(yong)電(dian)(dian)(dian)(dian)磁繼電(dian)(dian)(dian)(dian)器(qi)。該控(kong)制輸出(chu)回路(lu)應(ying)(ying)具備長時(shi)間過(guo)載和短路(lu)保護能(neng)(neng)力(li)。過(guo)載和短路(lu)保護機構(gou)的(de)動作電(dian)(dian)(dian)(dian)流閾值應(ying)(ying)不(bu)大于(yu)100mA。

　　以上兩種(zhong)(zhong)控(kong)(kong)制(zhi)方式(shi)，目前(qian)各大(da)電(dian)能(neng)(neng)表(biao)生產廠家采用的(de)(de)還都是**種(zhong)(zhong)智(zhi)能(neng)(neng)負荷開關(guan)控(kong)(kong)制(zhi)方式(shi)。第(di)二種(zhong)(zhong)方式(shi)由于涉及到跳閘(zha)控(kong)(kong)制(zhi)端子(zi)由原來的(de)(de)無(wu)源(yuan)無(wu)*性控(kong)(kong)制(zhi)開關(guan)信(xin)號(hao)，轉變為直接輸出一個交流電(dian)壓控(kong)(kong)制(zhi)信(xin)號(hao)，致使(shi)原來使(shi)用中的(de)(de)輔助端子(zi)中的(de)(de)跳閘(zha)控(kong)(kong)制(zhi)端子(zi)帶(dai)強(qiang)電(dian)，給(gei)使(shi)用者(zhe)以及電(dian)能(neng)(neng)表(biao)測試人員帶(dai)來一個操作習慣上的(de)(de)較(jiao)大(da)變化，存在較(jiao)大(da)的(de)(de)安全風(feng)險(xian)。且相應(ying)(ying)的(de)(de)電(dian)能(neng)(neng)表(biao)檢定裝置由于原有輔助端子(zi)電(dian)路板僅能(neng)(neng)承載(zai)40V及以下電(dian)壓，需要針(zhen)對改(gai)變作檢定裝置的(de)(de)相應(ying)(ying)改(gai)造，涉及改(gai)造范圍較(jiao)大(da)。