繼電保護測試儀器(qi)輔回(hui)路(lu)與主回(hui)路(lu)一樣，AC220V電(dian)源(yuan)經保(bao)險進入雙碳(tan)刷調壓(ya)(ya)器(qi)T1小(xiao)旋鈕調節(jie)的電(dian)壓(ya)(ya)量，通過(guo)隔離變壓(ya)(ya)器(qi)T4可(ke)直(zhi)接調節(jie)輸(shu)出(chu)0-20V或0-250V交流電(dian)壓(ya)(ya)或0-350V直(zhi)流電(dian)壓(ya)(ya)，此回(hui)路(lu)額定電(dian)流為1A。

繼電保護測試儀工作原理：

　　繼電保護測試儀器(qi)分為主(zhu)回(hui)路(lu)和輔(fu)(fu)回(hui)路(lu)兩個回(hui)路(lu)，主(zhu)回(hui)路(lu)采(cai)用大旋鈕(niu)調(diao)節，輔(fu)(fu)回(hui)路(lu)采(cai)用小旋鈕(niu)調(diao)節，主(zhu)回(hui)路(lu)通(tong)過面板上“輸出(chu)選擇”按鍵開(kai)關控制其輸出(chu)的(de)各(ge)種(zhong)量，并(bing)且每切換一種(zhong)輸出(chu)的(de)同時，儀器(qi)上的(de)數字電壓/電流(liu)表可(ke)自(zi)動監視其輸出(chu)值。輔(fu)(fu)回(hui)路(lu)通(tong)過輸出(chu)開(kai)關控制直接調(diao)節輸出(chu)，測量可(ke)外附萬(wan)用表測量。

　　繼電保護測試儀器主回路原理；

 　　輸(shu)(shu)(shu)(shu)入的AC220V電(dian)(dian)(dian)(dian)源經(jing)(jing)保(bao)險通(tong)過(guo)輸(shu)(shu)(shu)(shu)出(chu)(chu)控(kong)制繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)K1進(jin)入雙碳刷(shua)調(diao)壓(ya)(ya)(ya)器(qi)T1輸(shu)(shu)(shu)(shu)入端(duan)，通(tong)過(guo)T1大旋鈕(niu)調(diao)節(jie)的電(dian)(dian)(dian)(dian)量進(jin)入隔離變(bian)壓(ya)(ya)(ya)器(qi)T2（兼職升(sheng)(sheng)流(liu)(liu)(liu)器(qi)），升(sheng)(sheng)流(liu)(liu)(liu)器(qi)分三個(ge)(ge)抽(chou)頭(tou)(tou)輸(shu)(shu)(shu)(shu)出(chu)(chu)，一(yi)(yi)(yi)個(ge)(ge)抽(chou)頭(tou)(tou)為AC0-250V輸(shu)(shu)(shu)(shu)出(chu)(chu)，額定電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為3A；該抽(chou)頭(tou)(tou)輸(shu)(shu)(shu)(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)經(jing)(jing)整流(liu)(liu)(liu)濾(lv)波后可輸(shu)(shu)(shu)(shu)出(chu)(chu)0-350V直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)；**個(ge)(ge)抽(chou)為15V（10A），該抽(chou)頭(tou)(tou)一(yi)(yi)(yi)路(lu)經(jing)(jing)傳感(gan)器(qi)通(tong)過(guo)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)控(kong)制輸(shu)(shu)(shu)(shu)出(chu)(chu)0-10A交(jiao)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，一(yi)(yi)(yi)路(lu)經(jing)(jing)電(dian)(dian)(dian)(dian)阻輸(shu)(shu)(shu)(shu)出(chu)(chu)0-500mA交(jiao)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，一(yi)(yi)(yi)路(lu)經(jing)(jing)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)轉換可輸(shu)(shu)(shu)(shu)出(chu)(chu)0-10A或0-500mA直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)；**個(ge)(ge)抽(chou)頭(tou)(tou)為10V（100A）大電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)端(duan)，該抽(chou)頭(tou)(tou)穿過(guo)傳感(gan)器(qi)一(yi)(yi)(yi)次側直接輸(shu)(shu)(shu)(shu)出(chu)(chu)100A電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，該回路(lu)帶負載(zai)能力較強(qiang)，但輸(shu)(shu)(shu)(shu)出(chu)(chu)稍有過(guo)載(zai)，不能長時間(jian)處(chu)于大電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)狀(zhuang)態下。