GR468中的UNC评定 可靠性技术 新手提问 09年3月18日 编辑 simsmy 取消关注 关注 私信 我想请教一下，在GR-468中经常在表格的Applicability里面有UNCapplication或COapplication(gr-468-core2table4-5) 不知道对CO和UNC是怎么评定分级的？ 给TA打赏 共{{data.count}}人 人已打赏
安德维京 lv5lv5 09年3月18日 CO和UNC是指不同的应用环境，CO＝centreoffice，UNC＝uncontrol 在GR-468-COREIssue2中1.5.3OperatingEnvironments就是专门介绍这个的。具体如下： 1.5.3.1COEnvironment ACOenvironment,asdescribedinGR-63-CORE,restrictslong-termambienttemperaturestoarangeof+5to+40°C.Inaddition,GR-63-COREindicatesthatforshortperiods(i.e.,upto96consecutivehours,andforatotalofnomorethan15daysperyear),temperaturesmaygoaslowas–5°Corashighas+50°C.Thesesamelimitscanbeachievedatremotesiteswithappropriateenvironmentalcontrols,asinthecaseofControlledEnvironmentVaults(CEVs).Therefore,“CO”isusedthroughoutthisdocumenttorefertobothCentralOfficeandothercontrolledenvironments. 1.5.3.2UNCEnvironment Asusedhere,UNCenvironmentsexhibitconditionsthatdonotmeetthecriteriaforCOenvironmentsdescribedinSection1.5.3.1.ThetemperatureextremesforaUNCenvironmentarebasedonthecriteriainGR-487-CORE,GenericRequirementsforElectronicEquipmentCabinets.Thatdocumentdefinesatemperaturerangeof–40°Cto+46°Cfortheairtemperatureoutsideofanenclosure.Inaddition,itisgenerallyassumedthatinsidetheenclosuretheairtemperaturesurroundingtheequipmentcanreach+65°Cundermaximumsolarloadingandequipmentpowerdissipation.6AnexampleofaUNCenvironmentwouldbeapedestal(suchastheopticalnetworkunitofanFITLsystem).
CO和UNC是指不同的应用环境，CO＝centreoffice，UNC＝uncontrol
在GR-468-COREIssue2中1.5.3OperatingEnvironments就是专门介绍这个的。具体如下：
1.5.3.1COEnvironment
ACOenvironment,asdescribedinGR-63-CORE,restrictslong-termambienttemperaturestoarangeof+5to+40°C.Inaddition,GR-63-COREindicatesthatforshortperiods(i.e.,upto96consecutivehours,andforatotalofnomorethan15daysperyear),temperaturesmaygoaslowas–5°Corashighas+50°C.Thesesamelimitscanbeachievedatremotesiteswithappropriateenvironmentalcontrols,asinthecaseofControlledEnvironmentVaults(CEVs).Therefore,“CO”isusedthroughoutthisdocumenttorefertobothCentralOfficeandothercontrolledenvironments.
1.5.3.2UNCEnvironment
Asusedhere,UNCenvironmentsexhibitconditionsthatdonotmeetthecriteriaforCOenvironmentsdescribedinSection1.5.3.1.ThetemperatureextremesforaUNCenvironmentarebasedonthecriteriainGR-487-CORE,GenericRequirementsforElectronicEquipmentCabinets.Thatdocumentdefinesatemperaturerangeof–40°Cto+46°Cfortheairtemperatureoutsideofanenclosure.Inaddition,itisgenerallyassumedthatinsidetheenclosuretheairtemperaturesurroundingtheequipmentcanreach+65°Cundermaximumsolarloadingandequipmentpowerdissipation.6AnexampleofaUNCenvironmentwouldbeapedestal(suchastheopticalnetworkunitofanFITLsystem).