GB/T 12325-2003 电能质量 供电电压允许偏差

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基本信息
标准名称:电能质量 供电电压允许偏差
英文名称:Power quality—Admissible deviation of supply voltage
中标分类: 电工 >> 电工综合 >> 基础标准与通用方法
ICS分类: 能源和热传导工程 >> 电站综合
替代情况:替代GB 12325-1990;被GB/T 12325-2008代替
发布部门:中华人民共和国国家质量监督检验检疫总局
发布日期:2003-09-01
实施日期:2004-03-01
首发日期:1990-04-20
作废日期:2009-05-01
主管部门:国家标准化管理委员会
提出单位:国家技术监督检验检疫总局
归口单位:全国电压电流等级和频率标准化技术委员会
起草单位:机械科学研究院、国家电力公司、中铁电气化勘测设计院
起草人:李世林、郭汀、刘亚芳、曹东白、曾幼云、周茂兰、井辉
出版社:中国标准出版社
出版日期:2004-03-01
页数:平装16开, 页数:2, 字数:5千字
适用范围

本标准规定了供电电压允许偏差,适用于交流50hz,电力系统在正常运行条件下供电电压对标称系统电压的偏差。

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所属分类: 电工 电工综合 基础标准与通用方法 能源和热传导工程 电站综合
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【英文标准名称】:StandardReferenceRadiographsforHigh-StrengthCopper-BaseandNickel-CopperAlloyCastings
【原文标准名称】:高强度铜基和镍铜合金铸件标准参考射线照片
【标准号】:ASTME272-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E07.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:aluminumbronze;castingdiscontinuities;copper;copper-nickel;gammaray;manganesebronze;manganese-nickel-aluminumbronze;nickel-aluminum;nickel-copper;referenceradiographs;X-ray;Copperalloycastings;Diffractionmottling;High-stren
【摘要】:Referenceradiographsforhigh-strengthcopper-baseandnickel-copperalloycastingsareintendedtobeusedasaguidetotherecognitionofcommondiscontinuitiesandtheirdifferentiationbothastotypeandseveritylevel.Discontinuitytypesmostcommontothesealloysareillustrated.Otherdiscontinuitytypessuchashottears,cracksandunfusedchapletsareillustratedinapplicableReferenceRadiographsE186,E192,andE446.Forreference,descriptionsoftypicalcastingdefectsandcorrespondingradiographicindicationtypesarecontainedinSection5.Purchasersandsuppliersmay,bymutualagreement,selectparticulardiscontinuityclasses(see1.2)toserveasstandardsrepresentingminimumlevelsofacceptability.(SeeSections7and8.)Referenceradiographsrepresentedbythisstandardmaybeused,asagreeduponinapurchasersupplieragreement,forenergylevels,thicknessesorbothoutsidetherangeofthisstandardwhendeterminedapplicableforthecastingserviceapplication.ProceduresforevaluationofproductionradiographsusingapplicablereferenceradiographsofthisstandardareprescribedinSection9;however,theremaybemanufacturing-purchaserissuesinvolvingspecificcastingserviceapplicationswhereitmaybeappropriatetomodifyoraltersuchrequirements.Wheresuchmodificationsmaybeappropriateforthecastingapplication,allsuchchangesshallbecalled-outinthepurchasersupplieragreementorcontractualdocument.Section10addressespurchasersupplierrequisiteswhereweldrepairsmayberequired.ThefollowingASTMspecificationsillustratealloysthatmaybeusedwiththesestandards.Itisintendedthatthesereferenceradiographsalsoapplytorelatedgovernmentandcommercialmaterialspecifications.1.1Thesereferenceradiographsillustratevariouscategories,types,andseveritylevelsofdiscontinuitiesoccurringinhigh-strengthcopper-base,nickel-copper,andrelatedalloycastings.ThereferenceradiographfilmsareanadjuncttothisdocumentandmustbepurchasedseparatelyfromASTMInternational,ifneeded(see2.3).Categoriesandseveritylevelsforeachdiscontinuitytyperepresentedbythesereferenceradiographsaredescribedin1.2.Note18212;ThebasisofapplicationforthesereferenceradiographsrequiresapriorpurchasersupplieragreementofradiographicexaminationattributesandclassificationcriteriondescribedinSections4,7,8,9,and10ofthisstandard.1.2Thesereferenceradiographsconsistofforty-five5by7-in.(127by178-mm)nominalsizereproductions(twentymadefrom1-in.(25.4-mm)platecastingsexposedwithlowvoltageX-raysforthicknessesuptoandincluding2in.)andtwenty-fivemadefrom3-in.(76-mm)platecastingsexposedwith2MVX-raysorCobalt60isotopeforthicknessesgreaterthan2in.uptoandincluding6in.Unlessotherwisespecifiedinapurchasersupplieragreement(see1.1),eachdiscontinuitycategoryisforcomparisononlywithproductionradiographsproducedwithradiationenergylevelswithinthethicknessrangecoveredbythecategory.Thesereferenceradiographsillustratediscontinuitiesinsand-castmanganese-nickel-aluminumbronze-alloyplatesandarerepresentativeofthosefoundinnarrowfreezingrange(formerlyx201C;highshrinkagex201D;),high-strengthcopperandnickel-copperalloys.Followingisalistofdiscontinuitycategories,typesandseveritylevelsfortheadjunctreferenceradiographsofthisstandard(seeNote2):
【中国标准分类号】:H62
【国际标准分类号】:77_150_40
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:TerrestrialTrunkedRadio(TETRA)-VoiceplusData(V+D)-Part10:Supplementaryservicesstage1-Sub-part21:AmbienceListening(AL)(EndorsementoftheEnglishversionEN300392-10-21V1.2.1(2003-09)asGermanstandard)
【原文标准名称】:地面中继无线电(TETRA).声音加数据(V+D).第10部分:补充业务阶段1.第21分部分:环境监听(AL)
【标准号】:DINEN300392-10-21-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;TETRA;数据传送;通信;无线电设备;无线电装置;欧洲传送中继无线;无线电广播网;无线通信业务;语音传输;补充业务;声音的
【英文主题词】:Audible;Datatransfer;Radioequipment;Radionetworks;Radiosystems;Speechtransmission;Supplementaryservices;Telecommunication;Telecommunications;TETRA;Transeuropeantrunkedradio;Wirelesscommunica
【摘要】:ThisEuropeanstandardspecifiesrequirementsinthetelecommunicationssector.
【中国标准分类号】:M31
【国际标准分类号】:33_070_10
【页数】:2P;A4
【正文语种】:德语