ASTM D 2149-1996 频率为10MHz温度至500℃的固体陶瓷介电电容率(介电常数)及耗散因数的测试方法
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【英文标准名称】:TestMethodforPermittivity(DielectricConstant)andDissipationFactorofSolidCeramicDielectricsatFrequenciesto10MHzandTemperaturesto500DegreesC
【原文标准名称】:频率为10MHz温度至500℃的固体陶瓷介电电容率(介电常数)及耗散因数的测试方法
【标准号】:ASTMD2149-1996
【标准状态】:作废
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:损耗因数;电容率;容许的;电气试验;电绝缘;频率;介电性能;试验;特性;电气工程;陶瓷;绝缘
【英文主题词】:ceramics;insulations;dielectricproperties;properties;frequencies;electricaltesting;electricalengineering;testing;permissible;electricalinsulation;permittivity;dissipationfactor
【摘要】:
【中国标准分类号】:L11
【国际标准分类号】:29_035_30
【页数】:
【正文语种】:英语
【英文标准名称】:Designoffansworkinginpotentiallyexplosiveatmospheres
【原文标准名称】:工作在潜在爆炸环境中电扇的设计
【标准号】:BSEN14986-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-03-30
【实施或试行日期】:2007-03-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:事故预防;定义;设计;评估;爆炸危险;防爆;爆炸区;爆炸物;火灾;防火安全;可燃性环境;气体;危害;机器;作标记;职业安全;预防作用;保护(装置);保护措施;危险;危险区域;安全;安全工程;安全要求;规范(验收);测试;使用;用户信息;通风机;工作场所安全
【英文主题词】:Accidentprevention;Definitions;Design;Evaluations;Explosionhazard;Explosionprotection;Explosionzone;Explosions;Fire;Firesafety;Flammableatmospheres;Gases;Hazards;Machines;Marking;Occupationalsafety;Preventiveactions;Protection;Protectivemeasures;Risk;Riskarea;Safety;Safetyengineering;Safetyrequirements;Specification(approval);Testing;Use;Userinformation;Ventilators;Workplacesafety
【摘要】:ThisEuropeanStandardspecifiestheconstructionalrequirementsforfansconstructedtoGroupIIG(ofexplosiongroupsIIA,IIBandhydrogen)categories1,2and3,andGroupIIDcategories2and3,intendedforuseinexplosiveatmospheres.NOTEOperationconditionsforthedifferentcategoriesoffansusedinthisEuropeanStandardaredefinedinClause4.1.2ThisEuropeanStandarddoesnotapplytogroupIfans(fansformining),coolingfansorimpellersonrotatingelectricalmachines,coolingfansorimpellersoninternalcombustionengines.NOTE1RequirementsforgroupIfansaregiveninEN1710.NOTE2Therequirementsforelectricalpartsarecoveredbyreferencestoelectricalequipmentstandards.1.3ThisEuropeanStandardspecifiesrequirementsfordesign,construction,testingandmarkingofcompletefanunitsintendedforuseinpotentiallyexplosiveatmospheresinaircontaininggas,vapour,mistand/ordusts.Suchatmospheresmayexistinside(theconveyedfluid),outside,orinsideandoutsideofthefan.1.4ThisEuropeanStandardisapplicabletofansworkingintherangeofambientatmosphereshavingabsolutepressuresrangingfrom0,8barto1,1bar,temperaturesrangingfrom?20°Cto+60°C,maximumvolumefractionof21%oxygencontentandanaerodynamicenergyincreaseoflessthan25kJ/kg.NOTE1ThisEuropeanStandardmayalsobehelpfulforthedesign,construction,testingandmarkingoffansintendedforuseinatmospheresoutsidethevalidityrangestatedaboveorincaseswhereothermaterialpairingsneedtobeused.Inthiscase,theignitionriskassessment,ignitionprotectionprovided,additionaltesting(ifnecessary),manufacturer'smarking,technicaldocumentationandinstructionstotheuser,shouldclearlydemonstrateandindicatetheequipment'ssuitabilityfortheconditionsthefanmayencounter.NOTE2ThisEuropeanStandarddoesnotapplytointegralfansofelectricmotors.NOTE3Whereundatedreferencesareusedinthebodyofthestandardthelatesteditionapplies.
【中国标准分类号】:K35
【国际标准分类号】:23_120;29_260_20
【页数】:40P.;A4
【正文语种】:英语
【英文标准名称】:Testingofrubber;determinationoftensilestrengthatbreak,tensilestressatyield,elongationatbreakandstressvaluesinatensiletest
【原文标准名称】:橡胶试验.在抗拉伸试验中断裂抗拉强度、屈服应力值、断裂延伸率和应力值的测定
【标准号】:DIN53504-1994
【标准状态】:作废
【国别】:德国
【发布日期】:1994-05
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;材料试验;抗拉试验;塑料和橡胶技术;定义;橡胶;延伸;应力值;试验;材料强度;断裂伸长;试样;弹性体;抗拉强度;抗扯裂强度
【英文主题词】:Definitions;Elastomers;Elongation;Elongationatbreak;Materialstesting;Plasticsandrubbertechnology;Properties;Rubber;Strengthofmaterials;Stressvalue;Tearstrength;Tensilestrength;Tensiletesting;Testspecimens;Testing
【摘要】:Thedocumentdescribesamethodforthedeterminationofthetensilestressstrainpropertiesofrubber.Thepropertieswhichmaybedeterminedarethetensilestrengthatbreak,thetensilestressatyield,theelongationatbreakandstressvalues.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:7P.;A4
【正文语种】:德语
