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【英文标准名称】:ULStandardforSafetyFusedPower-CircuitDevicesFourthEdition;ReprintwithRevisionsThroughandIncluding7/29/2003
【原文标准名称】:安全熔断的电力线路装置用UL标准.第4版
【标准号】:UL977-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994-11-30
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:压力传动开关;熔断器;电力导线;高电压;启动装置;安全设备;开关;高压;保险盒
【英文主题词】:pressureswitches;fuses;powerlines;highvoltage;trippingdevices;safeguardingplants;switches;highpressure;fuseboxes
【摘要】:1.1Theserequirementscoverfusedpower-circuitdevicestobeemployedinaccordancewiththeNationalElectricalCode.1.2Fusedpower-circuitdevices,ascoveredbytheserequirements,areconsideredtobeeitherboltedpressurecontactswitchesorhigh-pressurebutt-typecontactswitches.1.3Bolted-pressurecontactswitchesaredevicesinwhichtheblade-jawconnectionshaveanadditionalpressureorclampingactionprovidedatbothendsoftheswitchbladeswhenthebladesareinthefullyclosedposition.1.4High-pressurebutt-typecontactswitchesaredeviceshavingbutt-typecontactsandaspring-chargedmechanism.1.5Theserequirementsdonotapplytolow-voltageACpowercircuitprotectorsascoveredbytheStandardforLowVoltageACPowerCircuitProtectorsUsedinEnclosures,ANSI/IEEEC37.29,ortolow-voltageACintegrallyfusedpowercircuitbreakersascoveredbytheStandardforLow-VoltageACPowerCircuitBreakersUsedinEnclosures,ANSI/IEEEC37.13.1.6Fusedpower-circuitdevicesmaybemanuallyorelectricallyoperatedandmayincorporateelectricaltrippingmeans.1.7Anelectricallytrippeddeviceisonewhoseclosingisperformedmanuallyorelectricallybutcontactopeningisperformedbyareleaseenergizedbyaseparatesourceofvoltage.1.8Adevicewithanelectricaloperatorisonewhosecontactclosingandopeningisperformedbyelectricalmeans.1.9Fusedpower-circuitdeviceshavecontinuouscurrentratingsofmorethan600Aandvoltageratingsof600VorlessAC,DC,orboth.DevicesratedACareintendedforuseoncircuitshavingmaximumavailableshort-circuitcurrentsof100,000,150,000,or200,000A(rmssymmetrical).DevicesratedDCareintendedforuseoncircuitshavingmaximumavailableshort-circuitcurrentsof20,000,50,000,100,000,150,000,or200,000ADC.1.9revisedDecember17,19961.10TheserequirementscoverdeviceswithprovisionformountingClassLfusesorClassTfusesratedmorethan600A.1.11Theserequirementscovercomplete,enclosedfusedpower-circuitdevicesinwhichtheswitchisintegralwiththeenclosure;open-typefusedpower-circuitdevicesintendedformountinginotherequipment,suchasswitchboardsorinaseparatelyshippedenclosure;andenclosuresintendedformountingopen-typefusedpower-circuitdevices.1.11revisedDecember17,19961.12Theserequirementsalsocoverelectricallytrippedand/oroperateddevicesthathavebeeninvestigatedtodeterminetheiracceptabilityforground-faultprotectionwhencombinedwithground-faultsensingandrelayingequipmentasfollows:a)SwitchesforusewithClassIground-faultsensingandrelayingequipmentincludingthosedevicesthatarecapableofinterrupting12timestheirratedcurrentorthathaveintegralmeansintendedtopreventdisconnectingatlevelsoffaultcurrentexceedingthecontactinterruptingcapabilityoftheswitch.b)SwitchesforusewithClassIIground-faultsensingandrelayingequipmentarecapableofinterruptingat10timestheirratedcurrentandareforuseinground-faultprotectionsystemswheremeansintendedtopreventdisconnectinglevelsatfaultcurrentexceedingthecontactinterruptingcapabilitiesoftheswitchareincorporatedwithintheground-faultsensingandrelayingequipment.
【中国标准分类号】:K43
【国际标准分类号】:29_120_50
【页数】:86P.;A4
【正文语种】:英语


【英文标准名称】:Cheese-Determinationoffatcontent-ButyrometerforVanGulikmethod
【原文标准名称】:乳酪.脂肪含量的测定.VanGulik法用油脂计
【标准号】:ISO3432-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:农业;壳体;油脂计;油脂的;校准错误;被校准能力;乳酪;含量;乳品业;乳制品;设计;含量测定;尺寸;误差极限;脂肪含量;脂肪;食品检验;食品;玻璃;刻度管;调查;实验仪器;实验室玻璃器皿;实验室器皿;作标记;材料;测量仪器;奶制品;颈状部位;编号;数字标志;橡胶塞;刻度;规范;测试;公差(测量);VanGulik法
【英文主题词】:Agriculture;Bodies;Butyrometers;Butyrometric;Calibrationerrors;Capableofbeingcalibrated;Cheese;Content;Dairyfarming;Dairyproducts;Design;Determinationofcontent;Dimensions;Errorlimits;Fatcontents;Fats;Foodinspection;Foodproducts;Glass;Graduatedtubes;Investigations;Laboratoryapparatus;Laboratoryglassware;Laboratoryware;Marking;Materials;Measuringinstruments;Milkproducts;Necks;Numbering;Numericaldesignations;Rubberstoppers;Scales;Specifications;Testing;Tolerances(measurement);VanGulik
【摘要】:ThisInternationalStandardspecifiesthecharacteristicsofabutyrometer(includingstoppers)forthedeterminationofthefatcontent,intherange0%massfractionto40%massfraction,ofcheesebytheVanGulikmethodandillustratessuitabledevicesforweighingandintroducingthecheesetestportion.
【中国标准分类号】:X16
【国际标准分类号】:67_100_30;67_260
【页数】:12P.;A4
【正文语种】:英语