JDCF-66W3/100V電壓互感器?結(jié)構(gòu)特點(diǎn)?Structure?Feature

本產(chǎn)品為單相油浸電磁式電壓互感器，為串級式絕緣結(jié)構(gòu)，一次繞組分為兩個線圈（如

圖?1），每個線圈為一個絕緣分級。一次線圈為多層圓筒式，由單絲漆包線繞成。上端“A”為 全絕緣，下端“N”為接地端，自上而下電位逐漸降低，鐵心與一次繞組在適當(dāng)位置作等電位連 接。

It?is?single?phase,?oil-immersed,?induced?voltage,?the?structure?is?cascade?type,?the?primary windinghas?two?coils?(refer?to?figure?1),?each?coil?is?a?grade?of?insulation.?The?primary?coil?is?multi?layercylinder?type,?which?is?made?from?single-silk?enamel?wire.?The?upper?terminal?“A”?is?fullyinsulated,?and?lower?terminal?“N”?is?intended?to?be?earthed,?the?potential?decrease?gradually,?thecore?and primary?is?made?equipotential connection?in suitable?position.

鐵心為方框式，上鐵心柱套有一次繞組及平衡繞組、下鐵心柱套有測量用二次繞組、一

次繞組及平衡繞組。器身由優(yōu)質(zhì)絕緣材料制成的構(gòu)件支承，其介質(zhì)損耗因數(shù)較小。器身經(jīng)真

空干燥處理后，裝在充滿變壓器油的瓷套內(nèi)。變壓器油經(jīng)過脫水、脫氣處理。The?core?is?square?frame?type,?upper?limb?is?covered?by primary?winding?and?stabilizing?winding,lower?limb?is?covered?by?protective?winding,?measuring?winding,?primary?winding?and?stabilizingwinding.?The?active?part?support?materials?are?made?from?good?qualify?insulation?material,?whichhave?very?low?dielectric?dissipation?factor.?The?active?part?is?dehydrated?under?high?degree?vacuum,and?then?assembled?in?the?porcelain,?then?filled?with?oil.?The?oil?has?been?dehydrated?and?degassedin advance.

器身及瓷套裝在鋼板制成的底座上，除“A”端外所有繞組的出頭均通過底座上的二次端子 引出，底座上還有接地螺栓供產(chǎn)品接地用。

The?active?part?and?porcelain?are?assembled?on?steel?base.?Besides?terminal?“A”,?all?terminals?aredrawn?out?from?secondary terminals?on?the?base,?also?there?is?a?earthing bolt?on?the?base?for?productearthing.

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?本型互感器為全密封結(jié)構(gòu)，產(chǎn)品頂部裝有不銹鋼制成的疊形波紋式膨脹器，使產(chǎn)品內(nèi)部與空氣隔離，防止變壓器油受潮,延長變壓器油和產(chǎn)品的使用壽命。通過油位視察窗可觀察膨脹器的工作狀態(tài)，在正常運(yùn)行時，產(chǎn)品內(nèi)部保持微正壓。

It?is?hermetically?sealed?product.?The?stainless?steel?bellows?is?on?the?top?of?CT?to?compensatethe?oil?volume?changing?with?temperature?and?keeping?the?transformer?oil?separating?fromatmosphere?to?prevent?the?oil?aged?and?moisture.?The?oil?level?indicator?can?show?the?operatingstatus?of?bellows.?The?internal?oil?pressure?should?be?kept?tiny?positive?during?normal?operationThe?sealing?status should be?kept.