BS EN 60068-2-2-2007 环境测试.试验.试验B:干热

作者:标准资料网 时间:2024-03-29 21:33:56   浏览:9453   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Environmentaltesting-Tests-TestB.Dryheat
【原文标准名称】:环境测试.试验.试验B:干热
【标准号】:BSEN60068-2-2-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-10-31
【实施或试行日期】:2007-10-31
【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】:保用期服务;空气循环;温度变化;检验设备;气候试验;部件;锐度;识别标志;烘干;干热;干热试验;电气工程;电气设备;电学;环境;环境条件;环境测试;发热的;最终测量;热学;初始测量;材料测试;不发热的;预处理;样品;应力;应力时间;表面;温度;温度试验;试验环境;试验室;测试;热试验;热测试
【英文主题词】:Aftercare;Aircirculation;Changesoftemperature;Checkingequipment;Climatictests;Components;Definitions;Degreeofsharpness;Distinguishingsigns;Dry;Dryheat;Dry-heattests;Electricalengineering;Electricalequipment;Electricity;Environment;Environmentalconditions;Environmentaltesting;Exothermic;Finalmeasurements;Heat;Initialmeasurements;Materialstesting;Nomogram;Notexothermic;Pretreatment;Specimens;Stress;Stresstime;Surfaces;Temperature;Temperaturetest;Testatmospheres;Testchamber;Testing;Testingdevices;Thermaltest;Thermaltesting
【摘要】:Thisstandarddealswithdryheattestsapplicablebothtoheat-dissipatingandnonheatdissipatingspecimens.Fornonheat-dissipatingspecimens,TestsBbandBddonotdeviateessentiallyfromearlierissues.Theobjectofthedryheattestislimitedtothedeterminationoftheabilityofcomponents,equipmentorotherarticlestobeused,transportedorstoredathightemperature.Thesedryheattestsdonotenabletheabilityofspecimenstowithstandoroperateduringthetemperaturevariationstobeassessed.Inthiscase,itwouldbenecessarytouseIEC60068-2-14TestN:Changeoftemperature.Thedryheattestsaresubdividedasfollows:Dryheattestfornonheat-dissipatingspecimens–withgradualchangeoftemperature,Bb.Dryheattestsforheat-dissipatingspecimens–withgradualchangeoftemperature,Bd;–withgradualchangeoftemperature,specimenpoweredthroughout,Be.Theproceduresgiveninthisstandardarenormallyintendedforspecimensthatachievetemperaturestabilityduringtheperformanceofthetestprocedure.
【中国标准分类号】:K04;A21
【国际标准分类号】:19_040
【页数】:18P.;A4
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:FixedRadioSystems-Point-to-pointequipment-ParametersforradiosystemsforthetransmissionofSTM-1digitalsignalsoperatinginthe18GHzfrequencybandwithchannelspacingof55MHzand27,5MHz(EndorsementoftheEnglishversionEN300430V1
【原文标准名称】:固定无线电系统.点对点设备.信道间隔为55MHz和27.5MHz的在18GHz频带内运行的传送STM-1数字信号的无线电系统用参数
【标准号】:DINEN300430-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:无线电通信链路;传输技术;频带;无线电电路;数字工程;无线电信道;远程通信;无线电设备;无线电工程;无线电中继系统;陆地的;数字信号;电信;电气工程
【英文主题词】:Bandoffrequencies;Digitalengineering;Digitalsignals;Electricalengineering;Radiochannels;Radiocircuits;Radioengineering;Radioequipment;Radiolinks;Radio-relaysystems;Telecommunication;Telecom
【摘要】:
【中国标准分类号】:M36
【国际标准分类号】:33_060_30
【页数】:2P;A4
【正文语种】:德语


MIL-DTL-3971E, DETAIL SPECIFICATION: METERS, TIME TOTALIZING, NON-HERMETICALLY SEALED, ELECTRICAL: GENERAL SPECIFICATION FOR (24 JAN 2001) [SUPERSEDING MIL-M-3971D]., This specification covers the general requirements for electrically operated non- hermetically sealed meters that automatically measure, and cumulatively register the total operating or idle time of the circuit, machine or system to which connected.