JSY介質(zhi)(zhi)損(sun)耗(hao)(hao)測試(shi)(shi)儀在交流電(dian)(dian)(dian)壓(ya)作用(yong)下，電(dian)(dian)(dian)介質(zhi)(zhi)要消耗(hao)(hao)部(bu)分(fen)電(dian)(dian)(dian)能(neng)，這部(bu)分(fen)電(dian)(dian)(dian)能(neng)將轉變為(wei)熱能(neng)產生(sheng)損(sun)耗(hao)(hao)。這種能(neng)量損(sun)耗(hao)(hao)叫做電(dian)(dian)(dian)介質(zhi)(zhi)的損(sun)耗(hao)(hao)。當(dang)電(dian)(dian)(dian)介質(zhi)(zhi)上施加交流電(dian)(dian)(dian)壓(ya)時(shi)，電(dian)(dian)(dian)介質(zhi)(zhi)中(zhong)的電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流間存在相角差Ψ，Ψ的余角δ稱為(wei)介質(zhi)(zhi)損(sun)耗(hao)(hao)角，δ的正切tgδ稱為(wei)介質(zhi)(zhi)損(sun)耗(hao)(hao)角正切。tgδ值是用(yong)來衡量電(dian)(dian)(dian)介質(zhi)(zhi)損(sun)耗(hao)(hao)的參數(shu)。儀器測量線路包括一標準回路(Cn)和一被試(shi)(shi)回路(Cx)。

標準(zhun)回(hui)路(lu)(lu)由(you)內置(zhi)高穩定度標準(zhun)電(dian)容器與(yu)測(ce)量(liang)(liang)線(xian)路(lu)(lu)組(zu)成(cheng)，被(bei)試回(hui)路(lu)(lu)由(you)被(bei)試品和測(ce)量(liang)(liang)線(xian)路(lu)(lu)組(zu)成(cheng)。測(ce)量(liang)(liang)線(xian)路(lu)(lu)由(you)取樣(yang)電(dian)阻與(yu)前置(zhi)放大器和A/D轉換器組(zu)成(cheng)。通(tong)過(guo)(guo)測(ce)量(liang)(liang)電(dian)路(lu)(lu)分別(bie)測(ce)得標準(zhun)回(hui)路(lu)(lu)電(dian)流與(yu)被(bei)試回(hui)路(lu)(lu)電(dian)流幅值及其相位等，再由(you)單片機運用(yong)數字化實(shi)時采集(ji)方法，通(tong)過(guo)(guo)矢(shi)量(liang)(liang)運算便可得出試品的(de)電(dian)容值和介(jie)質損耗正切值。

儀(yi)器內部已經(jing)采用了抗干擾措施，保證在外電場(chang)干擾下(xia)準(zhun)確(que)測量(liang)。

以上介質損耗測(ce)試儀工作的(de)原理你了解(jie)有多(duo)少？--揚州豪泰電力科(ke)技(ji)有限公司整理發布，更多(duo)產(chan)品(pin)請(qing)打(da)進電話咨詢，謝謝！