JB 1509-1974 GD型钢绳牵引胶带输送机(普通型)驱动装置型式与基本参数

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【英文标准名称】:TestMethodforFlexuralStrengthofDimensionalStone
【原文标准名称】:天然建筑石料弯曲强度的试验方法
【标准号】:ASTMC880-1993
【标准状态】:作废
【国别】:美国
【发布日期】:1993
【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】:试验;施工;岩石;抗弯强度;石;砌块;施工材料;天然石料
【英文主题词】:blocks(building);constructionmaterials;testing;naturalstones;rocks;bendingstrength;construction;stone
【摘要】:
【中国标准分类号】:Q21
【国际标准分类号】:91_100_20
【页数】:
【正文语种】:英语


【英文标准名称】:Hand-heldmotor-operatedelectrictools-Safety-Part1:Generalrequirements
【原文标准名称】:手持式电动工具安全第1部分：一般要求
【标准号】:IEC60745-1-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC61F
【标准类型】:()
【标准水平】:()
【中文主题词】:安全要求;规范(验收);电动工具;电气工程;普通控制系统;手工工具;电力驱动;电气器具;家用设备;安全性
【英文主题词】:Electricappliances;Electrictools;Electricalengineering;Handtools;Householdequipment;Pedestrian-controlledsystems;Powerdrives;Safety;Safetyrequirements;Specification(approval)
【摘要】:1ThisInternationalStandarddealswiththesafetyofhand-heldmotor-operatedormagneticallydrivenelectrictools,theratedvoltageofthetoolsbeingnotmorethan250Vforsingle-phasea.c.ord.c.tools,and440Vforthree-phasea.c.tools.Sofarasispracticable,thisstandarddealswiththecommonhazardspresentedbyhand-heldtoolswhichareencounteredbyallpersonsinthenormaluseandreasonablyforeseeablemisuseofthetools.Toolswithanelectricheatingelementarewithinthescopeofthisstandard.TheyshouldalsocomplywithrelevantpartsofIEC60335.Hand-heldelectrictools,hereinafterreferredtoastools,whichcanbemountedonasupportforuseasfixedtoolswithoutanyalterationofthetoolitself,arewithinthescopeofthisstandard.Unlesstherequirementforsuchsupportisgiveninarelevantpart2,thisstandardalonewillnotbesufficienttoensurethatthecombinationoftoolandsupportisadequate.Requirementsformotorsnotisolatedfromthesupply,andhavingbasicinsulationnotdesignedfortheratedvoltageofthetools,aregiveninAnnexB.Requirementsforrechargeablebattery-poweredmotor-operatedormagneticallydriventoolsandthebatterypacksforsuchtoolsaregiveninAnnexK.Thoseforsuchtoolsthatarealsooperatedand/orchargeddirectlyfromthemainsoranon-isolatedsourcearegiveninAnnexL.Thisstandarddoesnotapplyto:-hand-heldtoolsintendedtobeusedinthepresenceofexplosiveatmosphere(dust,vapourorgas);-hand-heldtoolsusedforpreparingandprocessingfood;-hand-heldtoolsformedicalpurposes(IEC60601);-heatingtoolswhicharecoveredbyIEC60335-2-45.Forhand-heldtoolsintendedtobeusedinvehiclesoronboardshipsoraircraft,additionalrequirementsmaybenecessary.Forhand-heldtoolsintendedtobeusedintropicalcountries,specialrequirementsmaybenecessary.NOTEAttentionisdrawntothefactthatinmanycountries,additionalrequirementsarespecifiedbythenationalhealthauthorities,thenationalauthoritiesresponsiblefortheprotectionoflabour,thenationalwatersupplyauthorities,etc.
【中国标准分类号】:K64
【国际标准分类号】:25_140_20
【页数】:95P.;A4
【正文语种】:英语