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交流(liu)電(dian)流(liu)變(bian)送器是一種能將被測(ce)交流(liu)電(dian)流(liu)轉換成按線性比例輸出的(de)直流(liu)電(dian)流(liu)或(huo)電(dian)壓的(de)儀器。配以相(xiang)應的(de)指示(shi)儀表或(huo)裝置，可在電(dian)力系統交流(liu)電(dian)路中實現(xian)對電(dian)流(liu)的(de)測(ce)量和控制。

交流(liu)(liu)(liu)(liu)電(dian)(dian)流(liu)(liu)(liu)(liu)、電(dian)(dian)壓變(bian)送器是(shi)一(yi)種能將被測交流(liu)(liu)(liu)(liu)電(dian)(dian)流(liu)(liu)(liu)(liu)、電(dian)(dian)壓轉換成按線性(xing)比例(li)輸出的直流(liu)(liu)(liu)(liu)電(dian)(dian)流(liu)(liu)(liu)(liu)或電(dian)(dian)壓的儀器。配以相應的指示(shi)儀表或裝置，可在電(dian)(dian)力系統(tong)交流(liu)(liu)(liu)(liu)電(dian)(dian)路中實現對(dui)電(dian)(dian)流(liu)(liu)(liu)(liu)、電(dian)(dian)壓的測量(liang)和控制。

交(jiao)流(liu)電(dian)(dian)流(liu)、電(dian)(dian)壓(ya)變送器是(shi)一種能將被測交(jiao)流(liu)電(dian)(dian)流(liu)、電(dian)(dian)壓(ya)轉換成(cheng)按線性比例(li)輸出的(de)直流(liu)電(dian)(dian)流(liu)或(huo)電(dian)(dian)壓(ya)的(de)儀器。配以相應的(de)指示(shi)儀表或(huo)裝(zhuang)置，可在電(dian)(dian)力系統(tong)交(jiao)流(liu)電(dian)(dian)路(lu)中實(shi)現對電(dian)(dian)流(liu)、電(dian)(dian)壓(ya)的(de)測量和控制。

EPW型有(you)(you)(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)變(bian)送器(qi)、EPK型無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)變(bian)送器(qi)及(ji)EPWK型有(you)(you)(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)/無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)組合(he)式變(bian)送器(qi)，是一種能將被(bei)測有(you)(you)(you)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)和無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)(lv)(lv)轉(zhuan)換成(cheng)直(zhi)流(liu)輸出的(de)(de)儀(yi)器(qi)，其(qi)轉(zhuan)換成(cheng)的(de)(de)直(zhi)流(liu)電流(liu)或電壓為線性比例(li)輸出，并能反映出被(bei)測功(gong)(gong)(gong)率(lv)(lv)(lv)在線路中的(de)(de)傳(chuan)輸方向。它們(men)適用(yong)于頻率(lv)(lv)(lv)為50Hz、60Hz及(ji)特殊(shu)頻率(lv)(lv)(lv)的(de)(de)各(ge)種單、三相（平(ping)衡(heng)或不(bu)平(ping)衡(heng)）線路，配(pei)以適當的(de)(de)指示(shi)儀(yi)表或裝置，可(ke)廣泛地應用(yong)發電廠和輸變(bian)電系(xi)統(tong)及(ji)其(qi)它對功(gong)(gong)(gong)率(lv)(lv)(lv)測量(liang)要求較(jiao)高的(de)(de)場所(suo)。

交流電(dian)(dian)流、電(dian)(dian)壓(ya)變送器是(shi)一種能將(jiang)被測交流電(dian)(dian)流、電(dian)(dian)壓(ya)轉(zhuan)換(huan)成按線性比例(li)輸出的(de)(de)直流電(dian)(dian)流或電(dian)(dian)壓(ya)的(de)(de)儀(yi)器。配以(yi)相應的(de)(de)指示儀(yi)表(biao)或裝置(zhi)，可在電(dian)(dian)力系統(tong)交流電(dian)(dian)路中實現(xian)對電(dian)(dian)流、電(dian)(dian)壓(ya)的(de)(de)測量(liang)和控制。$n$nEPAR、EPVR與EPA、EPV、EPAX、EPVX的(de)(de)區別是(shi)真有效(xiao)值變換(huan)，不隨波形畸變而影響測量(liang)精度(du)，因此特別適用于波形畸變嚴重的(de)(de)地區。

交流(liu)電(dian)(dian)流(liu)變送器(qi)是(shi)一種能將(jiang)被測(ce)交流(liu)電(dian)(dian)流(liu)轉換成按線性比例(li)輸出的(de)直流(liu)電(dian)(dian)流(liu)或電(dian)(dian)壓的(de)儀(yi)(yi)器(qi)。配以相應的(de)指示(shi)儀(yi)(yi)表(biao)或裝(zhuang)置，可在電(dian)(dian)力系統交流(liu)電(dian)(dian)路中實現對電(dian)(dian)流(liu)的(de)測(ce)量(liang)和(he)控制。$n$nEPAR、EPVR與EPA、EPV、EPAX、EPVX的(de)區(qu)別(bie)是(shi)真有效值變換，不隨波(bo)(bo)形畸(ji)(ji)變而影響測(ce)量(liang)精度，因此特別(bie)適用于(yu)波(bo)(bo)形畸(ji)(ji)變嚴重的(de)地區(qu)。