BS EN 50377-7-4-2004 光纤通信系统中使用的连接器装置和互连组件.产品规范.端接在IEC60793-2B1.1类单模纤维上的LC-PC单工型

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【英文标准名称】:Connectorsetsandinterconnectcomponentstobeusedinopticalfibrecommunicationsystems-Productspecifications-LC-PCsimplexterminatedonIEC60793-2categoryB1.1singlemodefibre
【原文标准名称】:光纤通信系统中使用的连接器装置和互连组件.产品规范.端接在IEC60793-2B1.1类单模纤维上的LC-PC单工型
【标准号】:BSEN50377-7-4-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-10-12
【实施或试行日期】:2004-10-12
【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】:电气工程;产品标准;适配器;产品规范;尺寸;电子设备及元件;电插头;单模纤维;通信系统;玻璃纤维电缆;光波导;电子工程;型式;试验;插头;接合面接触;单工的;规范(验收)
【英文主题词】:Adapters;Communicationsystems;Dimensions;Electricplugs;Electricalengineering;Electronicengineering;Electronicequipmentandcomponents;Engagementfacecontact;Glassfibrecables;Monomodefibres;Opticalwaveguides;Plugs;Productspecifications;Productstandards;Simplex;Specification(approval);Testing;Types
【摘要】:1ProductdefinitionThisEuropeanStandardcontainstheinitial,startoflifedimensional,optical,mechanicalandenvironmentalperformancerequirementswhichaterminatedandassembledsinglemoderesilientalignmentsleeveLC-PCsimplexconnectorset(plug/adaptor/plug)mustmeetinorderforittobecategorisedasanEuropeanStandardproduct.Sincedifferentvariantsandgradesofperformancearepermitted,productmarkingdetailsaregivenin3.5.2IntermateabilityAlthoughallproductsconformingtotherequirementsofthisEuropeanStandardwillintermate,theresultinglevelofrandomattenuationperformancewillonlybeensuredinaccordancewithTable1.Theintentionisthatthiswillbetrueirrespectiveofthemanufacturingsource(s)oftheproduct.Inallcases,theintermatingofplugvariantshavingdifferentattenuationorreturnlossgradeswillresultinanuncertainlevelofrandomattenuationperformance.Whenintermatingplugvariantshavingdifferentreturnlossgrades,theresultinglevelofreturnlosscannotbeassuredtobeanybetterthantheworstreturnlossgrade.Similarly,theintermatingofagradePplugwithagradeQplugwillresultinanuncertainlevelofrandomattenuationperformance.Asimplexplugcanbeconnectedinaduplexadaptorwithoutdegradingthelevelofperformance.3OperatingenvironmentThetestsselectedcombinedwiththeseveritiesanddurationsarerepresentativeofanexternalweatherprotectedenvironmentdefinedby:·ES200671ExternalweatherprotectedenvironmentdefinedbyES300019classes3.3,3.4and3.5.·EN61753-2-1CategoryU:uncontrolledenvironment4ReliabilityWhilsttheanticipatedservicelifeexpectancyoftheproductinthisenvironmentis20years,compliancewiththisEuropeanStandarddoesnotguaranteethereliabilityoftheproduct.Thisshouldbepredictedusingarecognisedreliabilityassessmentprogramme.5QualityassuranceCompliancewiththisEuropeanStandarddoesnotguaranteethemanufacturingconsistencyoftheproduct.Thisshouldbemaintainedusingarecognisedqualityassuranceprogramme.
【中国标准分类号】:L23
【国际标准分类号】:33_180_30
【页数】:36P.;A4
【正文语种】:英语


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【英文标准名称】:StandardSpecificationforElectric-Fusion-WeldedSteelPipeforHigh-PressureServiceatModerateTemperatures
【原文标准名称】:中温高压用电熔焊钢管的标准规范
【标准号】:ASTMA672-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【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】:电焊;管道;管;压力管;钢;温度
【英文主题词】:Electricwelding;Pipelines;Pipes;Pressurepipes;Steels;Temperature
【摘要】:
【中国标准分类号】:H48
【国际标准分类号】:23_040_10
【页数】:7P;A4
【正文语种】:英语


Product Code:SAE J1928
Title:Devices Providing Backfire Flame Control for Gasoline Engines in Marine Applications
Issuing Committee:Marine Technical Steering Committee
Scope: This SAE Standard covers the minimum requirements for design, construction, and testing of devices to prevent the propagation of backfire flame from within the gasoline engine to the surrounding atmosphere. The purpose of this document is to recommend a procedure for testing and establishing acceptable flame arresting characteristics of the devices.
Rationale: This SAE Standard covers the minimum requirements for design, construction, and testing of devices to prevent the propagation of backfire flame from within the gasoline engine to the surrounding atmosphere. The purpose of this document is to recommend a procedure for testing and establishing acceptable flame arresting characteristics of the devices.