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【英文标准名称】:Liveworking-Voltagedetectors-Two-polelowvoltagetype
【原文标准名称】:带电作业.电压检测器.两极低压型
【标准号】:BSEN61243-3-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-10-15
【实施或试行日期】:1999-10-15
【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】:电压;带电作业;使用说明;低压电源;安全;双极的;电压表;交流电压;电气设备;规范(验收);电气安全;防事故;工作场所安全;电网;电压测试器;电气工程;定义;定义;设计;试验
【英文主题词】:Accidentprevention;Alternatingvoltages;Definitions;Design;Electriccontactprotection;Electricpowernetworks;Electricalengineering;Electricalequipment;Electricalsafety;Electricaltesting;Installationsforratedvoltages;Instructionsforuse;Instruments;Liveworking;Lowvoltagemains;Occupationalsafety;Protectionagainstaccidents;Protectionagainstelectricshocks;Protectiondevices;Safety;Safetyrequirements;Specification(approval);Testing;Two-pole;Voltage;Voltagetesters;Voltmeters;Workplacesafety
【摘要】:ThispartofIEC61243isapplicabletotwo-polevoltagedetectorstobeusedonelectricalsystemsfornominalvoltagesnotexceeding1000Va.c.and/or1500Vd.c.andbelow500Hz(nominalfrequencies).Thedetectortypesareclassifiedasfollows:voltageclassA:uptoandincluding500Va.c/750Vd.c;voltageclassB:uptoandincluding1000Va.c/1500Vd.c.ThispartofIEC61243alsoappliestosupplementaryfunctionssuchasphaseindications,rotatingfieldindications,andcontinuitychecks(seeannexE).Furthermore,itappliestoaccessoriessuchascrocodileclips,detachableleadsandcontactelectrodeextensions.Unlessotherwisespecified,allthevoltagesdefinedinthisstandardrefertophase-to-phasevoltagesofthree-phasesystems.Detectorsmaybeusedinotherthanthree-phasesystems,thentheapplicablephase-to-phaseorphase-to-earth(ground)voltagesaretobeusedtodeterminetheoperatingvoltage.Low-voltagedetectorscoveredbythisstandardarenotintendedtoprovidemeasurementofabsolutevalues.Measuringdevicesareexcludedfromthisstandard.NOTE-TherequirementsformeasuringdevicesarespecifiedinIEC61010-1andIEC61010-2-031.
【中国标准分类号】:K04
【国际标准分类号】:13_260
【页数】:42P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforBondStrengthofMortartoMasonryUnits
【原文标准名称】:砌块用灰浆的粘结强度的标准试验方法
【标准号】:ASTMC952-2002e1
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:C15.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:band;concreteblock;crossedbrickcouplet;mortar;masonry
【摘要】:Theseproceduresareusefulforresearchintobondstrengthofmasonry.Theyarenotintendedtopredictthebondstrengthofcommercialmasonryconstruction.Thebondstrengthincommerciallybuiltstructuresisdeterminedbymanyfactorsbeyondthecharacteristicsofmortar,masonryunits,andtheproceduresofthistestmethod.Note18212;Thecrossed-brickcoupletsmethodmeasuresadirecttensilestrengthofthebondbetweenthemortarandmasonryunit.Itdoesnotdeterminetheflexuralstrengthoftheunitmortarassembly.Othertestmethodsmaybemoreappropriatefordeterminingtheflexuralbondstrengthbetweenmortarandmasonryunits.Theseinclude,C1072TestMethodforMeasurementofMasonryFlexuralBondStrength,C1357TestMethodsforEvaluatingMasonryBondStrength,andE518TestMethodsforFlexuralBondStrengthofMasonry.1.1Thistestmethodprovidestwoproceduresformeasuringbondstrengthofmortartomasonryunits:acrossedbrickcouplettensiletestforevaluatingmortar-brickbondingandastacked-bond,flexuraltestforevaluatingmortar-concreteblockbonding.1.2Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:91_100_10(CEMENT_GYPSUM_LIME_MORTAR)
【页数】:8P.;A4
【正文语种】: