NF C93-510-2006 聚烯烃绝缘和隔潮层聚烯烃护套低频电缆
时间:2024-05-13 23:13:26 来源: 标准资料网 作者：标准资料网 阅读：9932
【英文标准名称】:Low-frequencycableswithpolyolefininsulationandmoisturebarrierpolyolefinsheath.
【原文标准名称】:聚烯烃绝缘和隔潮层聚烯烃护套低频电缆
【标准号】:NFC93-510-2006
【标准状态】:现行
【国别】:法国
【发布日期】:2006-09-01
【实施或试行日期】:2006-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:架空电缆;电缆护套;电缆;通信电缆;铜导线;电气工程;总论;检验;绝缘电缆;绝缘;局域网;纵向放水层;低频;低频电缆;室外电缆;聚烯烃;质量保证;质量控制;电话电缆;地下
【英文主题词】:
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:33_120_20
【页数】:31P;A4
【正文语种】:其他
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodsforsmall,movablesourcesinreverberantfields-Part2:Methodsforspecialreverberationtestrooms(ISO3743-2:1994);EnglishversionofDINEN
【原文标准名称】:声学.声压法测定噪声源声功率级.混响声场中小型可移动声源的工程检测法.第2部分:专用混响试验室法(ISO3743-2:1994),ENISO3的德文版本
【标准号】:DINENISO3743-2-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustictestingrooms;Acoustics;Closedtestrooms;Definitions;Determination;Directmethod;Environment;Externalnoise;Handling;Information;Insulations;Mathematicalcalculations;Measurement;Measuringincertainity;Measuringinstruments;Measuringtechniques;Methods;Microphones;Noise(environmental);Noisemeasurements;Noisesources;Portable;Powerlevels;Precision;Pressuremeasurement(fluids);Reverberationrooms;Reverberationtime;Sound;Soundabsorption;Soundlevel;Soundpressure;Soundradiation;Soundsources;Soundspectra;Springs(water);Testing
【摘要】:1.1GeneralThispartofISO3743specifiesarelativelysimpleen-gineeringmethodfordeterminingthesoundpowerlevelsofsmall,movablenoisesources.Themeasurementsarecarriedoutwhenthesourceisin-stalledinaspeciallydesignedroomhavingaspecifiedreverberationtimeoverthefrequencyrangeofinterest.TheA-weightedsoundpowerlevelofthesourceundertestisdeterminedfromasingleA-weightedsoundpressurelevelmeasurementateachmicrophoneposition,ratherthanfromasummationofoctave-bandlevels.Thisdirectmethodeliminatestheneedforareferencesoundsource,butrequirestheuseofaspecialreverberationtestroom.Thedi-rectmethodisbasedonthepremisethatthesoundpressurelevel,averagedinspaceandtimeinthetestroom,canbeusedtodeterminethesoundpowerlevelemittedbythesource.Thepropertiesofthespecialreverberationtestroomarechosensothattheroom'sinfluenceonthesoundpoweroutputoftheequipmentundertestissmall.Thenumberofmicro-phonepositionsandsourcelocationsrequiredinthetestroomarespecified.GuidelinesforthedesignofspecialreverberationroomsaregiveninannexB.inadditiontothedirectmethod,acomparisonmethodisalsodescribed(see8.3).However,sincetherequirementsonthetestroomforthecomparisonmethodofISO3743-1areconsiderablylessrestric-tive,itisrecommendedthatthecomparisonmethodofISO3743-1beusedifaspecialreverberationtestroomisnotavailable.NOTE1PrecisionmethodsforthedeterminationofthesoundpowerlevelsofsmallnoisesourcesarespecifiedinISO3741andISO3745.1.2TypesofnoiseThemethodsspecifiedinthispartofISO3743aresuitableformeasurementsofalltypesofnoisewithinaspecifiedfrequencyrange,exceptimpulsivenoiseconsistingofisolatedburstsofsoundenergy.NOTES2AclassificationofdifferenttypesofnoiseisgiveninISO12001.3Forsourcesofimpulsivenoiseconsistingofshort-durationnoisebursts,thefree-fieldmethodsspecifiedinISO3744andISO3745shouldbeused.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:32P.;A4
【正文语种】:英语
【英文标准名称】:Loadingplatforms.Crape-palletsforgeneraluse.
【原文标准名称】:装料台.一般用途Crape托盘
【标准号】:NFH50-007-1962
【标准状态】:现行
【国别】:法国
【发布日期】:1962-01-01
【实施或试行日期】:1962-01-31
【发布单位】:(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分类;彼此间隔的;规范;尺寸;宽度;作标记;尺寸公差;间距;装卸平台;载荷支撑部件;产品规范;断裂荷载;托盘;名称与符号;高度;设备规范;分类系统
【英文主题词】:
【摘要】:
【中国标准分类号】:A85
【国际标准分类号】:55_180_20
【页数】:4P.;A4
【正文语种】:其他