【英文标准名称】:Guideforthedeterminationofthermalendurancepropertiesofelectricalinsulatingmaterials.Electricalinsulatingmaterials.Thermalenduranceproperties.Precisionovensforuseupto300C
【原文标准名称】:电绝缘材料耐热性能测定指南.电绝缘材料,耐热特性.温度达300℃的精密炉
【标准号】:BSEN60216-4-2-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-04-15
【实施或试行日期】:2001-04-15
【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】:老化性能;老化(材料);老化稳定性;老化试验;定义(术语);电气工程;电绝缘材料;电驱动装置;耐久试验;疲劳试验;指导手册;热老化试验;工业烤炉;绝缘材料;绝缘;寿命;长期性状;烘炉;精密度;耐力;规范(验收);统计方法分析;温度;试验设备;测试;材料热性质;热稳定性;热试验
【英文主题词】:Ageingbehaviour;Ageing(materials);Ageingstability;Ageingtests;Definitions;Electricalengineering;Electricalinsulatingmaterials;Electrically-operateddevices;Endurancetesting;Fatiguetests;Guidebooks;Heatageingtests;Industrialovens;Insulatingmaterials;Insulations;Life(durability);Long-timebehaviour;Ovens;Precision;Resistance;Specification(approval);Statisticalmethodsofanalysis;Temperature;Testequipment;Testing;Thermalpropertiesofmaterials;Thermalstability;Thermaltesting
【摘要】:ThispartofIEC60216coversminimumperformancerequirementsforventilatedandelectricallyheatedprecisionovensforthermalenduranceevaluationofelectricalinsulatingmaterialsandotherappropriateapplications.Itcoversovensdesignedtooperateoverallorpartofthetemperaturerangefrom20Kaboveroomtemperatureupto300℃.Twopossiblemethodsofachievingtherequiredperformancearedescribed:a)wheretherequiredperformanceisachievedbyprecisecontroloftemperatureinasimplesinglechamberoven,i.e.upgradedversionsofovensconformingtoIEC60216-4-1,and,otherwise,b)wheretherequiredperformanceisachievedbyutilizingasecondchamber(iso-box),mountedwithinthechamberofasingle-chamberoven,thepurposeofwhichistoreducethemagnitudeofanytemperaturechangestoanacceptablelevelwhilstmaintainingtherequiredlevelsofairchangeandcirculation.NOTE1Experiencehasshownthatemploymentofaniso-boxisaneconomicalandpracticalmeansofmeetingtherequirementsforaprecisionoven.NOTE2Itisrecommendedthataprecisionovenratherthanastandardovenisusedwhentheexpectedhalvingintervalislessthan10K(20khto10kh)inordertoincreasetheprecisionofthemeasuredtemperatureindexandhalvingintervaltoareasonablelevel.
【中国标准分类号】:K15
【国际标准分类号】:25_180_10;29_035_01
【页数】:20P.;A4
【正文语种】:英语
基本信息
标准名称: | 全球定位系统(GPS)铁路测量规程 |
英文名称: | Code for GPS survey of railway engineering |
中标分类: |
铁路 >>
铁路综合 >>
基础标准与通用方法 |
发布部门: | 中华人民共和国铁道部 |
发布日期: | 1997-03-03 |
实施日期: | 1997-07-01 |
首发日期: | |
作废日期: | |
主管部门: | 中华人民共和国铁道部 |
起草单位: | 铁路部第一勘测设计院 |
起草人: | 陈新焕、陈秀兰、陈光金、李春明 |
出版社: | 中国铁道出版社 |
出版日期: | 1997-07-01 |
页数: | 72页 |
适用范围
本规范适用于利用全球定位技术(GPS)进行的铁路线路控制测量、航测外业控制测量、铁路大型建筑物(桥梁、隧道)施工控制网测量,不适用于机载GPS航测的测量工作。
前言
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目录
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引用标准
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所属分类: 铁路 铁路综合 基础标准与通用方法
【英文标准名称】:Materialsandarticlesincontactwithfoodstuffs-Plastics-Testmethodsforoverallmigrationathightemperatures
【原文标准名称】:与食品接触的材料和制品.塑料.高温下全渗移物析出量的试验方法
【标准号】:BSEN1186-13-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-14
【实施或试行日期】:2002-10-14
【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】:物品;触点;食品检验;食品包装;食品;食品料;高温;高温技术;浸渍;试验研究;材料;接触食品的材料;材料规范;材料测试;迁移;抗渗移性;目的;橄榄油;塑料;葵花籽油;试件;试验
【英文主题词】:Articles;Contact;Foodinspection;Foodpackages;Foodproducts;Foodstuff;Hightemperatures;High-temperaturetechniques;Immersion;Investigations;Materials;Materialsincontactwithfood;Materialsspecification;Materialstesting;Migration;Migrationresistance;Objects;Oliveoil;Plastics;Sunflowerseedoil;Testpieces;Testing
【摘要】:ThisEuropeanStandardspecifiestestmethodsforthedeterminationoftheoverallmigrationintofattyfoodsimulantsfromplasticsmaterialsandarticles,bytotalimmersionoftestspecimensinafattyfoodsimulantattemperaturesfrom100°Cuptoandincluding,175°Cforselectedtimes.Alsodescribedisaprocedurewithasubstitutetestmedium.Inthissubstituteprocedurethemassofcomponentsadsorbedonmodifiedpolyphenyleneoxide(MPPO)istakenasameasurefortheassessmentoftheoverallmigrationintooliveoil.NOTE1Thetotalimmersiontestmethodhasbeenwrittenforusewiththefattyfoodsimulant,oliveoil.Thetestmethodcanalsobeusedwithappropriatemodificationswith'otherfattyfoodsimulants'calledsimulantD-asyntheticmixtureoftriglycerides,sunfloweroilandcornoil.Theseotherfattyfoodsimulantsproducedifferentchromatogramsforthesimulantmethylesterstothoseofthemethylestersofoliveoil.Suitablechromatogrampeaksofthemethylestersoftheotherfattyfoodsimulantsshouldbeselectedforthequantitativedeterminationofthesimulantextractedfromthetestspecimens.NOTE2Acomparativemigrationtestcarriedoutwithpolypropyleneandpolyethyleneterephthalatehightemperatureapplicationcontainersastestsamplesatconditions2hat100°Cand2hat175°C,respectively,incontactwith14C-labelledsynthetictriglycerideandMPPOprovidedtestresultscomparablewithintheanalyticaltoleranceofthemethods.NOTE3ToobtainreproducibleandrepeatableresultsusingtheMPPOmethoditmaybenecessarytomeasurethetemperatureofthetestspecimenbeforestartingthemigrationperiod.Anappropriatemethodformeasuringthetemperatureofthetestspecimenneedstobeestablished.Thedescribedmethodsaremostsuitableforfoodcontactarticlesintheformofsheetsandfilms,butcanalsobeappliedtoawiderangeofarticlesandcontainers.
【中国标准分类号】:X08;C53
【国际标准分类号】:67_250
【页数】:16P;A4
【正文语种】:英语