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【英文标准名称】:StandardTestMethodforDetectionandMeasurementofPartialDischarge(Corona)PulsesinEvaluationofInsulationSystems
【原文标准名称】:绝缘系统评定中局部放电(电晕)脉冲检测和测量的标准试验方法
【标准号】:ASTMD1868-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:检测;放电;电气工程;电绝缘;电气保护设备;电气测试;评定;绝缘液体;绝缘;测量;工艺
【英文主题词】:averagedischarge(corona)current(It);calibrationpulse;corona;continuouspartialdischarges(continuouscorona);dischargemagnitude;ionization;partialdischargeapparentpowerloss(Pa);partialdi
【摘要】:1.1Thistestmethodcoversthedetectionandmeasurementofpartialdischarge(corona)pulsesattheterminalsofaninsulationsystemunderanappliedtestvoltage,includingthedeterminationofpartialdischarge(corona)inceptionandextinctionvoltagesasthetestvoltageisraisedandlowered.Thetestmethodisalsousefulindeterminingquantitiessuchasapparentchargeandpulserepetitionratetogetherwithsuchintegratedquantitiesasaveragecurrent,quadraticrateandpower.Thetestmethodisusefulfortestvoltagesranginginfrequencyfromzero(directvoltage)toapproximately2000Hz.1.2Thetestmethodisdirectlyapplicabletoasimpleinsulationsystemthatcanberepresentedasatwo-terminalcapacitor(1),(2).1.3Thetestmethodisalsoapplicableto(distributedparameter)insulationsystemssuchashigh-voltagecable.Considerationmustbegiventoattenuationandreflectionphenomenainthistypeofsystem.Furtherinformationondistributedparametersystemsofcables,transformers,androtatingmachineswillbefoundinRefs.(1),(2),(3),(4),(5),(6),(7),(8),and(9).(SeeAEICCS5-87,IEEEC57113-1991,IEEEC57124-1991,andIEEE1434-2005.)1.4Thetestmethodcanbeappliedtomulti-terminalinsulationsystems,butatsomelossinaccuracy,especiallywheretheinsulationofinductivewindingsisinvolved.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionstatementsaregiveninSections8and14.
【中国标准分类号】:K04
【国际标准分类号】:
【页数】:11P.;A4
【正文语种】:


【英文标准名称】:Chemicalproductsforindustrialuse.Determinationofdensityofsolidsotherthanpowdersandcellularproducts.Hydrostaticbalancemethod.
【原文标准名称】:工业用化学制品.除了粉剂和泡沫制品之外的固体密度的测定.水静态平衡法
【标准号】:NFT20-049-1985
【标准状态】:作废
【国别】:法国
【发布日期】:1985-09-01
【实施或试行日期】:1985-09-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:物理试验;硫化橡胶;密度测量;橡胶;测量;试验;试验;塑料
【英文主题词】:Densitymeasurement;Measurement;Physicaltesting;Plastics;Rubber;Testing;Tests;Vulcanizedrubber
【摘要】:
【中国标准分类号】:G04
【国际标准分类号】:83_060;83_080_01
【页数】:4P.;A4
【正文语种】:其他