KMSB-30b高壓電容電橋(材料測(cè)試專用)KMSB-30bHVCapactianceBridgeSpecialforMaterialTest簡(jiǎn)介:Generalintroduction:KMSB-30b型高壓電橋是本公司推出的新一代半智能性高壓電橋。其采用了電流比較儀與西林電橋相結(jié)合的線路。主要可以測(cè)量各種絕緣油及各種絕緣材料在工頻高壓下的介質(zhì)損耗(tg )和電容量(C),其測(cè)量線路采用 正接法 即測(cè)量對(duì)地絕緣的試品。由于電橋內(nèi)附有一個(gè)2500kV的高壓電源及一臺(tái)高壓標(biāo)準(zhǔn)電容器,并與將檢流計(jì)、高壓電橋有機(jī)的結(jié)合在一起,所以本電橋特別適應(yīng)測(cè)量各類絕緣油和絕緣材料的介損(tg )及介電常數(shù)( )。同時(shí)本電橋還帶有數(shù)據(jù)處理及打印功能,使測(cè)量更加方便直觀。TheKMSB-30bHVbridgeishalf-intelligentbridgenewlydeveloppedbyourcompany.Itcombinefeaturesofcurrentcomparisiondevicewithschringbridge.Itmeasurestg andcapacitanceforinsulationoilorinsulationmaterialunderpowerfrequencyhighvoltage.Itmeasurestheobjectswhichisinsulatedwithground.Andthemeasureadopts positiveconnection .Sincethereisa2500kVHVpowersupplyandHVstandardcapacitor,andcombineswithcurrentinspectorandHVbridge,therefore,thebridgeissuitablefortg anddielectricconstant( ).Alsothebridgeiswithdataprocessandprintingfunctionsothatthemeasureiseasytoread.電橋的特點(diǎn):Featuresofthebridge:z橋體本身帶有2500V電源及標(biāo)準(zhǔn)電容,測(cè)量材料介損更為方便。Thebridgeiswith2500vpowersuppyandstandardcapacitor,whichmakesthemeasureeasier.z橋體內(nèi)附指另儀、高壓電源、標(biāo)準(zhǔn)電容器,所以外圍接線極少。Zeropointer,HVpowersupply,standardcapacitorisattached,sotheouterconnectionisveryfew.z橋體采用了電流比較儀代替?zhèn)鹘y(tǒng)的阻抗元器件,從而提供了更高的比例精度及穩(wěn)定性。Thebridgeadoptscurrentcomparisondeviceinsteadoftraditionalimpedancespare.Therefore,theratioprecisionandstabilityisimproved.z電橋還具有試驗(yàn)電壓顯示功能,以便試驗(yàn)者對(duì)試驗(yàn)電壓的隨時(shí)監(jiān)控。Thebridgehastestvoltagedisplayfunctionsothatthetestercanmonitorthetestvoltageatanytime.z橋體帶有數(shù)據(jù)處理功能,能直接顯示并能按要求將數(shù)據(jù)打印出來(lái)。Thebridgeiswithdataprocessfunction.Thedataaredisplayeddirectlyandprintedout.z不但能測(cè)量電容量及介損,還可通過(guò)計(jì)算出有功功率功率因數(shù)Cos 值。Notonlycapacitanceandtandeltaismeasured,butalsotheCos value(efficientpowerfactor)canbecalculated.主要技術(shù)指標(biāo):MainTechnicalStandardsz電橋電容比Cx/C(s當(dāng)額定比率為1:1時(shí))為0到1.11110,步級(jí)0.00001,倍率(K)變化范圍為10、5、2、1共四檔,電容的測(cè)量范圍決于標(biāo)準(zhǔn)電容器Cs的大小電容值,即Cx=Cs K (Cx/Cs)Whentheratedratiois1:1,theCx/Csisfrom0to1.11110,thestepnessis0.00001,andmultiplyingfactorKrangesare10、5、2、1,fourlevelsintotal.ThecapacitancemeasurerangedependsonCsofstandardcapacitor:Cx=Cs K (Cx/Cs)z電容比率值的測(cè)量準(zhǔn)確度:電容比率讀數(shù)第一只盤為滿度時(shí)應(yīng)不大于當(dāng)tg <3 10-3為 0.0001tg 3 10-3為 0.0001 0.005 tg x。Measureprecisionofcapacitanceratio:Whenthefirstdialcapacitanceratioreadingisfull,thevalueshallnotbeabove:tg <3 10-3 0.0001tg 3 10-3 0.0001 0.005 tg xz電橋tg 范圍為:-0.111110到+0.111110,步級(jí)為0.000001。Thetg rangeofthebridgeis-0.111110to+0.111110,withstepnessof0.000001.ztg x測(cè)量準(zhǔn)確度不大于 0.5%tg x 1 10-4Themeasureprecisionoftg xisnotabove 0.5%tg x 5 10-4z電容量及介損顯示精度:電容量: 0.5% tg x 0.00005。介損: 0.5%tg x 5 10-5Thecapacitanceanddissipationdisplayprecision:capacitance: 0.5% tg x 0.00005.dielectricdissipation: 0.5%tg x 5 10-5z電橋最大工作電流:電橋標(biāo)準(zhǔn)臂最大允許電流為15mA。通過(guò)被測(cè)臂最大電流與倍率位置有關(guān),見(jiàn)表1。Maximumworkingcurrentofthebridge:themaximumallowedcurrentofthebridgestandardarmis15mA.Thevalueisrelatedwithmultiplyingfactor.Pleaserefertoform1表1form1倍率Kmultiplyingfactormaximumallowedcurrent最大允許電流115mA230mA575mA10150mA注意:被測(cè)最大不得超過(guò)1A,如測(cè)試需要?jiǎng)t需外接電流互感器。Note:thetestedcurrentshallnotbeabove1A.Ifitisabove1A,currentmutualinductoristobeconnected.z分辨率:當(dāng)通過(guò)標(biāo)準(zhǔn)電容器的電流為0.1mA時(shí),且電容比率讀數(shù)第一只盤為滿度時(shí),在電橋完全平衡時(shí),其電容比及介損盤的分辨率均為5 10-5。Resolution:whenthecurrentthroughstandardcapacitoris0.1mA,andthecapacitanceratioreadingoffirstdialisfull,andthebridgeistotallybalanced,thecapacitanceratioandthedielectricdisspationdialresolutionareboth5 10-5.z標(biāo)準(zhǔn)電容量預(yù)置范圍:0000.00到1999.99pFStandardcapacitancepresetrange:0000.00to1999.99pFz電橋內(nèi)有過(guò)電壓保護(hù)措施,氖泡起輝電壓不超過(guò)交流30伏。Thereisvoltageprotectionmesureinsidethebridge.NeonglowstartingvoltageisnotaboveAC30V.z試驗(yàn)電壓顯示:范圍0到999.9kV分辨率為0.1kV準(zhǔn)確度 5%tg x 5 10-3Testvoltagedisplay:0-999.9kVResolution:0.1kVPrecision: 5%tg x 5 10-3z電橋內(nèi)附指零儀,其主要技術(shù)特性如下:1.電壓靈敏度2lV/格。2.輸入阻抗80k 。3.三次諧波抑制60dB。注:以上的所有技術(shù)指標(biāo)都是在基本測(cè)試頻率50 0.2Hz下的。Thereiszeropointerinthebridgewithitsfeatures:Voltagesensitivity:2lV/scaleInputimpedance:80k Thirdresonancewaveresistance:60dBNotice:alltheabovetechnicalstandardsareunderconditionoffrequency50 0.2Hz.z高壓電源技術(shù)特性電壓輸出:0~2500V/50Hz高壓電流輸出:0~10mA(左右)HVpowertechnicalfeature:HVoutput:0~2500V/50HzHVcurrentoutput:around0~10mAz內(nèi)置標(biāo)準(zhǔn)電容器電容量為100pF或50pF(為名義值,實(shí)際值有打印單上給出。)tg 小于5 10-5試驗(yàn)電壓:2500V/50HzInnerstandardcapacitorCapacitanceis100pFor50pF(thisisnominalvaluewhiletheactualvalueisgivenbyprintedpaper)tg islowerthan5 10-5Testvoltage:2500V/50Hzz工作電壓:150V~260V/50HzWorkingvoltage:150V~260V/50Hz(注:高壓輸出將與工作電壓成正比)(Note:theHVoutputisdirectlyproportionalwithworkingvoltage)z外形尺寸:500(寬) 350(深) 550(高)毫米。Outerdimension:560(W)*350(depth)*550(H)mmz重量:約35公斤。Weight:around35kG.