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FPW型(xing)南自無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)變送(song)(song)器(qi)(qi)、FPK型(xing)無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)變送(song)(song)器(qi)(qi)及(ji)FPWK型(xing)有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)/無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)組合式變送(song)(song)器(qi)(qi)，是(shi)一種(zhong)能將被(bei)(bei)測有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)和無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)轉換成直(zhi)流(liu)輸(shu)出(chu)的(de)儀器(qi)(qi)，其轉換成的(de)直(zhi)流(liu)電(dian)(dian)流(liu)或電(dian)(dian)壓(ya)為線性比例輸(shu)出(chu)，并能反映(ying)出(chu)被(bei)(bei)測功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)在線路中的(de)傳輸(shu)方向。它們適用于頻率(lv)(lv)(lv)為50Hz、60Hz及(ji)特殊頻率(lv)(lv)(lv)的(de)各種(zhong)單、三相（平衡或不平衡）線路，配以適當的(de)指示儀表或裝置(zhi)，可(ke)廣(guang)泛地應用發電(dian)(dian)廠和輸(shu)變電(dian)(dian)系統及(ji)其它對功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)測量要求較高(gao)的(de)場所。

S3-WRD 有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)/無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)組合變送器具有(you)與S3（T）-N3-WD、S3（T）-N3-RD一樣的優異性能，只需(xu)一組信號，便可(ke)同時測量(liang)線(xian)路的有(you)功(gong)(gong)(gong)和無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)，其輸(shu)出方式(shi)均為(wei)共地式(shi)輸(shu)出，可(ke)長期連續運行(xing)，可(ke)實現系(xi)統(tong)(tong)有(you)功(gong)(gong)(gong)、無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)測量(liang)。有(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)可(ke)測量(liang)平衡和不平衡系(xi)統(tong)(tong)。無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)采用(yong)跨相法測量(liang):適用(yong)于頻率(lv)(lv)為(wei)50Hz或60Hz三相三線(xian)對(dui)稱平衡系(xi)統(tong)(tong)的測量(liang)；無(wu)功(gong)(gong)(gong)采用(yong)移相法測量(liang)：

S3-RD 無功(gong)功(gong)率(lv)變送器是(shi)一(yi)種能將被(bei)輸(shu)(shu)入(ru)電(dian)壓、電(dian)流(liu)信號經隔(ge)離放大，轉(zhuan)換(huan)成與輸(shu)(shu)入(ru)無功(gong)功(gong)率(lv)成線性比例直(zhi)流(liu)信號輸(shu)(shu)出的儀器，它能反映系(xi)(xi)統負荷的特性（容性或感性）, 可(ke)長期連(lian)續運行(xing)，廣泛應用(yong)于電(dian)力系(xi)(xi)統以(yi)及非電(dian)力系(xi)(xi)統對測量(liang)(liang)無功(gong)功(gong)率(lv)要求較高的場所.無功(gong)功(gong)率(lv)采用(yong)跨相(xiang)法測量(liang)(liang):適用(yong)于頻率(lv)為50Hz或60Hz三相(xiang)三線對稱平衡系(xi)(xi)統的測量(liang)(liang)；無功(gong)采用(yong)移相(xiang)法測量(liang)(liang)：適用(yong)于頻率(lv)為50Hz或60Hz單(dan)相(xiang)、