【英文标准名称】:Reliabilitydataanalysistechniques-Proceduresforcomparisonoftwoconstantfailureratesandtwoconstantfailure(event)intensities
【原文标准名称】:可靠性数据分析技术.双恒定失效率和双恒定失效(事件)密度比较程序
【标准号】:BSIEC61650-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-10-15
【实施或试行日期】:1997-10-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:质量保证;质量控制;性能试验;性能;统计质量控制;失效;统计检验;可靠度;统计分布;认可试验;统计方法分析
【英文主题词】:Comparison;Dataanalysis;Electricalengineering;Failureanalysis;Failurerates;Mathematicalcalculations;Reliabilityanalysis;Reliabilitymanagement
【摘要】:ThisInternationalStandardspecifiesprocedurestocomparetwoobserved–failurerates;–failureintensities;–rates/intensitiesofrelevantevents.Theproceduresareusedtodeterminewhetheranapparentdifferencebetweenthetwosetsofobservationscanbeconsideredstatisticallysignificant.Itisassumedthatthetimeintervalsto/betweenthefailures(events)areindependentandidenticallyexponentiallydistributedduringtheobservationperiod(thatis,theaccumulatedrelevanttesttime).NOTE–Thisassumptionimpliesthatthefailurerate/intensityisconstant.Itisfurthermoreassumedthattherearetechnicalorotherreasonstobelievethatadifference(eitheranimprovementordeterioration)mightexistbetweentheobservedreliabilitycharacteristicofthetwosetsofitemsundercomparison.Someexamplesoftypicalapplicationsaredescribedin5.4.Themethodsaredesignedashypothesistestswhichstate,withaspecifiedrisk(thesignificancelevel),whetherthetwoseriesofobservationsbelongtothesamepopulationorthesameprocess,thatistheyhavethesametruemeanvalue.NOTE–Failurerate,whichisrelevanttonon-repaireditems,isassociatedwithadistributionoftimestofailure.Failureintensity,whichisrelevanttorepaireditemsonly,isassociatedwithapointprocessdescribingasequenceofevents,forexampletimesbetweenfailuresonatimeaxis.Theproceduresarenotrestrictedtocomparisonoffailurerate/intensity,butcanbeappliedtoobservationsoftwoseriesofanyrelevantevents,providedtheaboveassumptionsarevalid.NOTE–Thetwoseriesofobservationsmaybeofitemsfromthesamepopulation,orthesameitemunderdifferentconditions(forexampleenvironmentandload),orjustcomparableseriesofevents(forexamplecaraccidentsonaroad).Numericalmethodsandagraphicalprocedureareprescribed.Theobservationperiodsrelevanttothetwoseriesdonotneedtobeequal,butiftheyare,themethodsareverysimple.
【中国标准分类号】:K04
【国际标准分类号】:03_120_01
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:Specificationforlow-voltageswitchgearandcontrolgear.Controlcircuitdevicesandswitchingelements.Requirementsforproximitydeviceswithanalogueoutput
【原文标准名称】:低压开关设备和控制设备规范.控制电路装置和开关元件.带模拟输出的邻近设备的要求
【标准号】:BSEN60947-5-7-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-10-16
【实施或试行日期】:2003-10-16
【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】:准确度;获得;活动;老化;交流电场;交流电压;环境温度;模拟;模拟电路;模拟信号;器具连接器;认可试验;近似法;运行状况;电缆;容量;特征;分类系统;间隙;条件;连接;恒定场;结构要求;控制设备和开关元件;控制装置;控制开关;电流;切断装置;汽缸;阻尼(波);定义(术语);防护等级;直流电压;放电;断开装置;切断;距离;关门装置;接地导线;电控制设备;电量;电气工程;电气设备;电磁的;电磁兼容性;电磁学;机电的;机电装置;电磁兼容性(EMC);紧急切断;紧急停止装置;紧急停止;误差分析;评估;出口;火险;频率;操纵;热学;加热;高度;滞后现象;空转模式;脉冲电压;指示;感应;信息;绝缘;电气连接件用接口;干扰辐射;漏电路径;线电压降落;负荷;纵向插槽;低电压;低压设备;低压开关设备;维护;作标记;材料;措施;测量;测量技术;力学;金属;安装;操作;光学的;性能测试;管线;插头;精密度;产品信息;特性;接近开关;选择;半导体电路;传感器;设备电压;形状;冲击;短路;信号变换器;信号;规范(验收);应力;供应;开关;开关设备;开关操纵元件;开关频率;切换间隔;合闸;抗拉试验;试验结果;测试;螺纹;发射机;运输;类型;超声波学;振动;电压;电压降落
【英文主题词】:Accuracy;Acquisition;Activities;Ageing(materials);Alternatingfields;Alternatingvoltages;Ambienttemperature;Analogue;Analoguecircuits;Analoguesignals;Appliancecouplers;Approvaltesting;Approximation;Behaviour;Cables;Capacitive;Characteristics;Classificationsystems;Clearances;Conditions;Connections;Constantfields;Constructionrequirements;Controlcircuitdevicesandswitchingelements;Controldevices;Controlswitches;Currents;Cutoffdevice;Cylinders;Damping;Definitions;Degreesofprotection;Directvoltage;Discharge;Disconnectingdevices;Disconnection;Distances;Doorclosers;Earthconductors;Electriccontrolequipment;Electriccurrent;Electricalengineering;Electricalequipment;Electromagnetic;Electromagneticcompatibility;Electromagnetism;Electromechanical;Electromechanicaldevices;EMC;Emergencycut-out;Emergencyshutdowndevice;Emergencystop;Erroranalysis;Evaluations;Exits;Firerisks;Frequencies;Handlings;Heat;Heating;Height;Hysteresis;Idlemode;Impulsevoltages;Indications;Inductive;Information;Insulations;Interfacesofelectricalconnections;Interferingemissions;Leakagepaths;Linevoltagedrop;Loading;Longitudinalslots;Lowvoltage;Low-voltageequipment;Low-voltageswitchgear;Maintenance;Marking;Materials;Measure;Measurement;Measuringtechniques;Mechanic;Metals;Mounting;Operation;Optical;Performancetesting;Pipes;Plugs;Precision;Productinformation;Properties;Proximityswitches;Selection;Semiconductorcircuits;Sensors;Servicevoltage;Shape;Shocks;Shortcircuits;Signalconverters;Signals;Specification(approval);Stress;Supply;Switches;Switchgear;Switchingelements;Switchingfrequency;Switchingintervals;Switching-in;Tensiletests;Testresults;Testing;Threads;Transmitters;Transport;Types;Ultrasonics;Vibration;Voltage;Voltagedrops
【摘要】:ThispartofIEC60947statestherequirementsforproximitydeviceswithanalogueoutput.Theymayconsistofoneormoreparts.TherequirementsofIEC60947-5-2(proximityswitches)applywiththeadditionsormodificationsasstatedinthisstandard.TheclausenumberinginthisstandardfollowstheclausenumberingofIEC60947-5-2,modifiedwherenecessary.
【中国标准分类号】:K30
【国际标准分类号】:29_130_20
【页数】:20P.;A4
【正文语种】:英语