您的位置: 标准下载 » 美军标 MIL » MIL-HDBK »

MIL-HDBK-63038-1A

时间:2024-05-11 20:50:29 来源: 标准资料网 作者:标准资料网 阅读:8888
下载地址: 点击此处下载
MIL-HDBK-63038-1A, MILITARY HANDBOOK: TECHNICAL MANUAL WRITING HANDBOOK (15 MAY 1984)., This handbook is a general guide for a technical writer. It contains guidelines and criteria for selecting the optimum type and amount of TM (technical manual) coverage for military equipment, and related components under all mission conditions. This handbook has been developed for use in conjunction with the technical content specifications to provide the additional guidance material needed to produce usable, user-oriented TM.
下载地址: 点击此处下载
【英文标准名称】:(Draft)OutlineofInvestigationforCoaxialFaultProtectorsforNetwork-PoweredBroadbandIssueNumber:1
【原文标准名称】:(草案)网络供电宽带用同轴故障保护器的调查大纲.发布编号:1
【标准号】:ULSUBJECT2389-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002-08-01
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1ThisOutlineofInvestigationcontainsconstructionandtestrequirementsforcoaxialfaultprotectorsthatconnectintotheundergrounddistributionorfeedercabletoaresidentialunitorproperty.Theseproductsareintendedforuseonlywithnetwork-poweredbroadbandcommunicationsystemsemployingundergroundcabletothepremise.ThesesystemspermitIowpoweronthecenterconductorofthecoaxialcable.ThepowerlimitsareinaccordancewithArticle830oftheNationalElectricalCode,NFPA70.1.2Theserequirementsareintendedforbroadbandcommunicationscircuitsemployedintheoutsideplantwhichoperateinasimilarmannertoplainoldtelephone(POTlines)circuitsandwhichencounterthesameenvironmentalproblemsandareinstalledinasimilarmannertotelephonecircuits.1.3Theserequirementsareintendedforproductswhichconnectinserieswiththecoaxiallineandobtainoperatingpowerfromthatcircuit.Thecoaxialfaultprotectormonitorsthecoaxialcircuitforopenconditionsinthecenterconductorandforshortsorleakagecurrenttogroundfromthecenterconductor.Leakagecurrentmayoccurbetweenthecoaxialcablecenterconductoranditsshield.Theshieldshallbebondedtosystemgroundwhichmayalsobeconsideredearthground.Thecableshallbetypicallyburieddirectlyinthesoil(withoutconduit)lessthan18inchesbelowfinishedgrade.Thistypeofinstallationexposesthecabletoenvironmentalproblems,mechanicalabuse,andtampering.Intheeventafaultoccurs,thecoaxialfaultprotectorshalldisconnectthesystem'soperatingpowertothepremises.Normaloperationisthefunctionalprocessoftheproducttodetectafaultanddisconnectpower.
【中国标准分类号】:M42
【国际标准分类号】:
【页数】:18
【正文语种】:英语


【英文标准名称】:Railwayrollingstock.Highandlowtemperaturetestmethodsofparts(Amendment1)
【原文标准名称】:铁路车辆.部件的高温和低温测试方法(修改件1)
【标准号】:JISE4035AMD1-2011
【标准状态】:现行
【国别】:日本
【发布日期】:2011-09-07
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonRailwaysandRollingStock
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:S34
【国际标准分类号】:45_060_01
【页数】:6P.;A4
【正文语种】:日语