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Product Code:SAE J1119
Title:Steel Products for Rollover Protective Structures (ROPS) and Falling Object Protective Structures (FOPS)
Issuing Committee:Optc4, Protective Structures
Scope:The purpose of this SAE Information Report is to provide concepts for rational selection and application of materials for Rollover Protective Structures (ROPS) and Falling Object Protective Structures (FOPS) and to provide information about the properties that should be considered in selecting and utilizing material in protective structures. While other materials could conceivably be used successfully, this report is limited to a consideration of steel with discussion on its mechanical properties and processing characteristics. Emphasis is placed on the toughness aspect (ability to resist brittle fracture) as this property is of paramount importance to structure integrity. It is emphasized that specific values for material properties have relevance to performance only in conjunction with specific design considerations such as structure size or weld joint detail and location. Because there are many design-material systems which can be successfully employed to achieve the prescribed performance of protective structures, this report does not make categorical selection of steels.【英文标准名称】:Safetyoftransformers,reactors,powersupplyunitsandcombinationstherof-Part2-12:Particularrequirementsandtestsforconstantvoltagetransformersandpowersupplyunitsforconstantvoltage
【原文标准名称】:电力变压器,电源装置及类似设备的安全性.第2-12部分:恒压用恒变压器和供电机组的试验和详细要求
【标准号】:IEC61558-2-12-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-01
【实施或试行日期】:2011-01
【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】:电路;定义(术语);尺寸选定;电气工程;电气安全性;防火安全性;隔离变压器;磁的;主变压器;输出电压;供电系统;防电击;安全隔离变压器;短路保护;小功率变压器;稳定装备;电源电压;试验;变压器
【英文主题词】:Circuits;Definitions;Dimensioning;Electricalengineering;Electricalsafety;Firesafety;Isolatingtransformers;Magnetic;Mainstransformers;Outputvoltage;Powersupplysystem;Protectionagainstelectricshocks;Safetyisolatingtransformers;Short-circuitprotection;Small-powertransformers;Stabilizingdevice;Supplyvoltages;Testing;Transformers
【摘要】:ThispartofIEC61558dealswiththesafetyofconstantvoltagetransformersforgeneralapplicationsandpowersupplyunitsforconstantvoltageforgeneralapplications.Constantvoltagetransformersincorporatingelectroniccircuitsarealsocoveredbythisstandard.Thisstandardisapplicabletotransformersandpowersupply(linear)withinternaloperatingfrequenciesnotexceeding500Hz.ThisstandardusedincombinationwithPart2-16forswitchmodepowersupply(SMPS)unitsisalsoapplicabletopowersupplieswithinternaloperatingfrequencieshigherthan500Hz.Wherethetworequirementsareinconflict,themostseveretakeprecedence.Theratedsupplyvoltagedoesnotexceed1000Va.c.,theratedsupplyfrequencydoesnotexceed500Hz,theinternaloperatingresonantfrequencydoesnotexceed30kHzandtheinternaloperatingfrequencydoesnotexceed100MHz.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:46P.;A4
【正文语种】:英语