Product Code:SAE AS4677
Title:Fitting, Tee, Bulkhead, on Run, Boss on Side, Short Flareless
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.【英文标准名称】:Safetyofpowertransformers,powersupplyunitsandsimilardevices-Part2-23:Particularrequirementsfortransformersforconstructionsites
【原文标准名称】:电力变压器、电源装置及类似设备的安全第2-23部分:建筑工地用变压器的特殊要求
【标准号】:IEC61558-2-23-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC96
【标准类型】:()
【标准水平】:()
【中文主题词】:应用;小功率变压器;建筑;安全;安全要求;安全隔离变压器;试验;规范(验收);电气工程;定义;定义;电源设备;干式变压器;隔离变压器;施工设备;电路;电力变压器;功率单位;图形符号;变压器;建筑工地;供电系统
【英文主题词】:Buildingsites;Circuits;Construction;Constructionequipment;Definitions;Dimensioning;Dry-typetransformers;Electricalengineering;Electricalsafety;Firesafety;Graphicsymbols;Isolatingtransformers;Mainsunits;Powersupplysystem;Powertransformers;Protectionagainstelectricshocks;Safety;Safetyisolatingtransformers;Safetyrequirements;Short-circuitprotection;Small-powertransformers;Specification(approval);Supplyunits;Testing;Transformers;Use
【摘要】:Replacement:ThisInternationalStandarddealswithallaspectsofsafetysuchaselectrical,thermalandmechanical.ThispartofIEC61558appliestostationaryorportablesingle-phaseorpoly-phaseair-cooled(naturalorforced)independentorassociated,isolatingorsafetyisolatingtransformersintendedforuseonconstructionsites,havingaratedsupplyvoltagenotexceeding1000Va.c.,andaratedfrequencynotexceeding500Hz.Theratedoutputshouldnotexceed:-25kVAforsingle-phasetransformers;-40kVAforpoly-phasetransformers.Isolatingtransformersforconstructionsitesshouldhaveano-loadoutputvoltageandaratedoutputvoltageexceeding50Va.c.andnotexceeding250Va.c.Safetyisolatingtransformersforconstructionsitesshouldhaveano-loadoutputvoltageandaratedoutputvoltagenotexceeding50Va.c.NOTEThisstandardisapplicabletotransformersforthesupplyofelectricityinlocationsasspecifiedinIEC60364-7-704.Thelatteralsospecifiestheprotectionbyusinganearthedmidpointorstarpointoftheoutputwinding.Transformersforconstructionsitesaretobeusedwhenrequiredbytheinstallationrulesorbytheappliancespecificationforprotectionpurposes.Whenthetransformersareincorporatedintolow-voltageswitchgearandcontrolgearassembliesforconstructionsitesasspecifiedinIEC60439-4,theadditionalrequirementsofIEC60439-4willapplytotheassembly.Thisstandardisapplicabletodry-typetransformers.Thewindingsmaybeencapsulatedornon-encapsulated.NOTE1Fortransformersfilledwithliquiddielectricorpulverizedmaterial,suchassand,additionalrequirementsareunderconsideration.NOTE2Attentionisdrawntothefactthat-fortransformersintendedtobeusedintropicalcountries,specialrequirementsmaybenecessary;-inlocationswherespecialenvironmentalconditionsprevail,particularrequirementsmaybenecessary.Thisstandardalsoappliestotransformersincorporatingelectroniccircuits.Thisstandarddoesnotapplytoexternalcircuitsandtheircomponentsintendedtobeconnectedtotheinputandoutputterminalsorsocket-outletsofthetransformer.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:37P;A4
【正文语种】:英语