标准资料网-标准资料免费资源平台

【英文标准名称】:Measuringrelaysandprotectionequipment-Part27:Productsafetyrequirements
【原文标准名称】:测量继电器和保护设备.第27部分:产品安全要求
【标准号】:BSEN60255-27-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2006-09-29
【实施或试行日期】:2006-09-29
【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】:定义;电接触保护;电气工程;电气保护设备;电气安全;电气测试;设备;耐火性;检验;测量继电器;机械安全;种植;防电击;保护设备;合格试验;继电器;安全;产品安全;安全要求;规范(验收);配电盘(开关设备);测试;测试条件
【英文主题词】:Definition;Definitions;Electriccontactprotection;Electricalengineering;Electricalprotectionequipment;Electricalsafety;Electricaltesting;Equipment;Fireresistance;Inspection;Measuringrelays;Mechanicalsafety;Plant;Protectionagainstelectricshocks;Protectiondevices;Qualificationtests;Relays;Safety;Safetyofproducts;Safetyrequirements;Specification(approval);Switchboards(switchgear);Testing;Testingconditions
【摘要】:ThisInternationalStandarddescribestheproductsafetyrequirementsformeasuringrelaysandprotectionequipmenthavingarateda.c.voltageupto1000Vwitharatedfrequencyupto65Hz,oraratedd.c.voltageupto1500V.Abovetheselimits,IEC60664-1shouldbeusedforthedeterminationofclearance,creepagedistanceandwithstandtestvoltage.Thisstandarddetailsessentialsafetyrequirementstominimizetheriskoffireandhazardscausedbyelectricshockorinjurytotheuser.Thisstandarddoesnotcoverthesafetyrequirementsofinstallations.Itdoescoverallthewaysinwhichtheequipmentmaybemountedandusedincubicles,racksandpanels,andalsore-testing.Thisstandardalsoappliestoauxiliarydevicessuchasshunts,seriesresistors,transformers,etc.,solelyusedandtestedtogetherwithmeasuringrelaysandprotectionequipment.Ancillaryequipmentusedinconjunctionwithmeasuringrelaysandprotectionequipmentmayneedtocomplywithadditionalsafetyrequirements.Thisstandardisintendedtodescribeonlyproductsafetyrequirements;therefore,functionalperformanceoftheequipmentisnotcovered.Functionalsafetyrequirements,includingEMCfunctionalsafety,arenotcoveredbythisstandard.Functionalsafetyriskanalysisisnotwithinthescopeofthisproductsafetystandard.Thisstandarddoesnotspecifyindividualequipmentsorimplementationsofcircuitsandcomponents.Theobjectofthisstandardistohaveacomprehensivestandardthatcoversallaspectsofproductsafetyandtherelatedtypeandroutinetests,formeasuringrelaysandprotectionequipment.
【中国标准分类号】:K33
【国际标准分类号】:29_120_70
【页数】:122P.;A4
【正文语种】:英语


Product Code:SAE AS1946
Title:Hose Assembly, Polytetrafluoroethylene, Metallic Reinforced, Up to 1500 psi and 450 掳F, Hydraulic and Pneumatic
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:This SAE Aerospace Standard (AS) defines the requirements for polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assemblies suitable for use in aerospace hydraulic, fuel and lubricating oil systems at temperatures between -67 掳F and 450 掳F for Class I assemblies, -67 掳F and 275 掳F for Class II assemblies, and at nominal pressures up to 1500 psi. The hose assemblies are also suitable for use within the same temperature and pressure limitations in aerospace pneumatic systems where some gaseous diffusion through the wall of the PTFE liner can be tolerated.The use of these hose assemblies in pneumatic storage systems is not recommended. In addition, installations in which the limits specified herein are exceeded, or in which the application is not covered specifically by this standard, for example oxygen, shall be subject to the approval of the procuring activity.