JB/T 4212.13-1996 冷镦内六角圆柱头螺钉模具 镦六角凹模片

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【英文标准名称】:Railwayapplications-Rollingstockequipment-Capacitorsforpowerelectronics
【原文标准名称】:铁路应用机车车辆设备电力电子设备用电容器
【标准号】:IEC61881-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-09
【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/TC9
【标准类型】:()
【标准水平】:()
【中文主题词】:操作;质量要求;电力电容器;铁路应用;直流电压;电力电子学;超荷载;铁道车辆;铁路;电压测量;致冷装置;电车道;鉴定合格试验;INCRIPTION;交流电容器;安装;电气元件;电气工程;电气设备;试验;定义;电子设备及元器件;测量技术;试验要求;电容器;安全要求;铁路车辆;测量
【英文主题词】:Alternatingcurrentcapacitors;Capacitors;Condenserunit;Definitions;Directvoltage;Electricrailways;Electricalcomponents;Electricalengineering;Electricalequipment;Electronicequipmentandcomponents;Erection;Inscription;Measurement;Measuringtechniques;Operation;Overload;Powercapacitors;Powerelectronics;Qualificationtests;Qualityrequirements;Railwayapplications;Railwayvehicles;Railways;Rollingstocks;Safetyrequirements;Testing;Testingrequirements;Voltagemeasurement
【摘要】:ThisInternationalStandardappliestocapacitorsforpowerelectronicsintendedtobeusedonrollingstock.Theratedvoltageofcapacitorscoveredbythispartislimitedto10000V.Theoperatingfrequencyofthesystemsinwhichthesecapacitorsareusedisusuallybelow2500Hz,whilethepulsefrequenciesmaygouptoseveralthousandhertz,insomecasesbeyond10000Hz.Itdistinguishesbetweena.c.andd.c.capacitors.Theyareconsideredascomponentsmountedinenclosures.NOTE-Thisstandardcoversanextremelywiderangeofcapacitortechnologiesfornumerousapplications:overvoltageprotection,d.c.anda.c.filtering,switchingcircuits,d.c.energystorage,auxiliaryinverters,etc.Thefollowingareexcludedfromthisstandard:-capacitorsforinductionheat-generatingplantsoperatingatfrequenciesbetween40Hzand24000Hz(seeIEC60110);-capacitorsformotorapplicationsandthelike(seeIEC60252);-capacitorstobeusedincircuitsforblockingoneormoreharmonicsinpowersupplynetworks;-smalla.c.capacitorsasusedforfluorescentanddischargelamps(seeIEC61048andIEC61049);-capacitorsforsuppressionofradiointerference(seeIEC60384-14);-shuntcapacitorsfora.c.powersystemshavingaratedvoltageabove1000V(seeIEC60871-1andIEC60871-2);-shuntpowercapacitorsoftheself-healingtypefora.c.systemshavingaratedvoltageuptoandincluding1000V(seeIEC60831-1andIEC60831-2);-shuntpowercapacitorofthenonself-healingtypefora.c.systemshavingaratedvoltageuptoandincluding1000V(seeIEC60931-1andIEC60931-2);-electroniccapacitorsnotusedinpowercircuits(seeIEC60080andIEC60166);-seriescapacitorsforpowersystems(seeIEC60143);-couplingcapacitorsandcapacitorsdividers(seeIEC60358);-capacitorsforapplicationsrequiringenergystorage/highcurrentdischargesuchasphotocopiesandlasers;-capacitorsformicrowaveovens.Examplesaregiveninclause6.
【中国标准分类号】:S35
【国际标准分类号】:31_060_70;45_060_01
【页数】:85P.;A4
【正文语种】:英语

MIL-HDBK-1211, MILITARY HANDBOOK: MISSILE FLIGHT SIMULATION, (PART ONE), SURFACE-TO-AIR MISSILES (17 JUL 1995)., Guided missile technology embraces almost all of the physical sciences, and missile flight simulation can simulate almost any missile function to whatever degree of realism is required or affordable. To cover all aspects with all degrees of simulation complexity in a single volume would clearly be impractical. Therefore, in the interests of practicality and utility, this handbook is limited to flight simulations of surface- to-air missiles used by the US Army. Because many functions are basically common to a wide variety of missile types, however, this information will also be useful to those interested in other types of missiles. A broad range of model sophistication is covered in the handbook because it is important that the level of sophistication of a simulation model be matched to the specific purposes of the simulation. For some applications it is unnecessary to calculate the missile rotational behavior directly from the aerodynamic characteristics. For these applications, equations of motion with three translational degrees of freedom are adequate. In cases in which the missile rotational behavior is critical and simplified methods are not acceptable, the equations of motion must contain at least two, and sometimes three, additional degrees of freedom. The equations and methods for both three- and six-degree-of-freedom models are presented. Very simple and moderately complex mathematical seeker models are given, and the we of actual flight hardware or breadboard hardware in the simulation is described. Very specialized missile system component simulation techniques are beyond the scope of this handbook. Representative examples of modeling topics that are beyond the scope are detailed seeker signal processing, propellant grain burning dynamics, detailed servo system component simulation, complex aerodynamic cross coupling, airframe deflection and flutter, and fuze and warhead operation. Equations and simulation methodology are given for all the major subsystems of surface-to-air missiles. The basic simulation equations can be implemented by either digital or analog means; however, since by far the greatest proportion of current flight simulations uses digital computation. digital methods are emphasized.