干式变压器气候和环境试验

11O179IEC6OO76-112OO4TM46A11-8425257-1-3!2004IECIEC60076-11200420022.1××4m×4m×4m10t832.2××4m×4m×4m10t-55℃～+85℃40%RH～98%RH3#C1C2280%160%3.122BACB2～61Fig.1Climaticandenvironmentallaboratory!#$$%#TRANSFORMER&’()!*+(,-’)#$$%4223.21C18h-25℃±3℃12h4h-5℃±3℃12h-5℃±3℃2C28h-25℃±3℃12h-25℃±3℃3.322±3℃3.4122h～3h22230K3!E1E24.120℃93%6h35min1.115min35min1.14.2/℃1401201008060402005075100125150175200/℃1234562Fig.2Relationbetweenwindingtemperatureandreferencepointtempereture1BC2BA3BC4BA5BC6BA2725-5-261972-ClimaticandEnvironmentalTestforDry-TypeTransformerZHANGGuo-zhong-./01ng-ZH2N3u-41n-5ANG67o-8ongShenyangTransformerResearchInstitute,Shenyang110179,ChinaAbstractBasedonthecontentandmethodofclimaticandenvironmentaltestofdry-typetrans-formerinthestandard,IEC60076-112004,theprocessandprobablephenomenaoftestarein-troduced.KeywordsDry-ty&’tr()*+,r-’r./(0,r(t,ry.123-(t34t’*t.5)63r,)-’)t(2t’*t.7’*t48(r(4t’r-3*t3420151050123456/h108.4GΩ/MΩ3Fig.3Changeofinsulationresistanceduringcondensationofaproduct50℃±3℃90%±5%144h43h80%4.311.12![1]IEC60076-112004[S]./MΩ88.7GΩ250200150100500020406080100120140160/h4Fig.4Changeofinsulationresistanceduringpenetrationofaproduct3