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UL SUBJECT 2577-2010 吊顶龙骨低压照明系统调查大纲发布号:3

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【英文标准名称】:OUTLINEOFINVESTIGATIONFORSUSPENDEDCEILINGGRIDLOWVOLTAGELIGHTINGSYSTEMSIssueNumber:3
【原文标准名称】:吊顶龙骨低压照明系统调查大纲发布号:3
【标准号】:ULSUBJECT2577-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010-12-17
【实施或试行日期】:2010-12-17
【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】:1.1TheserequirementscoversuspendedceilinggridlowvoltagelightingsystemsandcomponentsintendedforpermanentinstallationandforuseinasuspendedceilinggridinaccordancewithArticle411oftheNationalElectricalCode,ANSI/NFPA70.1.2Thesuspendedceilinggridlowvoltagelightingsystemscoveredbythisoutlineareintendedtobeinstalledinasuspendedceilinggridthatprovidesmechanicalsupportfortheceilingtilesandprovideselectricalconnectionsbetweenthelowvoltagepowersupplyandthelowvoltageluminaires.Thelowvoltagelightingsystemconsistsofthefollowingcomponents:a)Anisolatingtypelowvoltagepowersupplyoperatingat30V(42.4Vpeak)orlessandnotexceedingClass2powerlimits,b)AgridrailpowerdistributionsystemtoprovidepowerfromtheClass2powersupplytooneormoreClass2poweredluminaires,andc)Class2poweredluminairesthatmayberecessedintothesuspendedceiling,surfacemountedontheroomsideoftheceiling,orlocatedbelowthesuspendedceiling.1.3Thesuspendedceilinggridlowvoltagelightingsystemisintendedtobepermanentlyconnected,forindoordrylocations,commercialuseonly,andinstalledinaccordancewiththeNationalElectricalCode,ANSI/NFPA70,theInternationalBuildingCode,andtheInternationalMechanicalCoderequirements.Thisoutlinealsocoverssuspendedceilinggridlowvoltagelightingsystemsintendeduseinforuseair-handlingspaces.1.4Thisoutlinedoesnotcoversuspendedceilinggridlowvoltagelightingsystemsintendedforusein:a)HazardouslocationsasspecifiedintheNationalElectricalCode,ANSI/NFPA70,b)GeneralpatientcareareasorcriticalpatientcareareasasdefinedbyArticle517oftheNationalElectricalCode,ANSI/NFPA70,c)EmergencysystemsasdefinedbyArticle700oftheNationalElectricalCode,ANSI/NFPA70.1.5ThisoutlinedoesnotevaluatethesuspendedceilinggridlowvoltagelightingsystemforseismicrequirementsinaccordancewiththeInternationalBuildingCode.1.6Thisoutlinedoesnotevaluatethesuspendedceilinggridlowvoltagelightingsystemsforfireresistance.
【中国标准分类号】:K70
【国际标准分类号】:
【页数】:40P.;A4
【正文语种】:英语


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【英文标准名称】:Industrial-processcontrolvalves-Part8-1:Noiseconsiderations-Laboratorymeasurementofnoisegeneratedbyaerodynamicflowthroughcontrolvalves(IEC60534-8-1:2005);GermanversionEN60534-8-1:2005
【原文标准名称】:工业过程控制阀.第8-1部分:噪声的考虑.气动流流经控制阀产生的噪声的实验室测量
【标准号】:EN60534-8-1-2005
【标准状态】:现行
【国别】:
【发布日期】:2006-06
【实施或试行日期】:2006-06-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;空气动力流;空气动力学;空气噪声;空气(载)声;控制阀;校正装置;定义;数字的;数字工程;尺寸选定;方向控制阀;电气工程;辐射;流量;流量率;流体工程;气体流动;气阀;实验室;实验室试验;测量;空气噪声测量;测量技术;噪声;燥声特性;噪声辐射;噪声测量;管道;过程控制;过程测量和控制技术;额定值;声音;声级;声压级;声音传播;试验;阀门
【英文主题词】:Acousticmeasurement;Aerodynamicflow;Aerodynamics;Airbornenoise;Airbornesound;Controlvalves;Correctingunits;Definition;Definitions;Digital;Digitalengineering;Dimensioning;Direction-controlvalves;Electricalengineering;Emissions;Flowcapacity;Flowrates;Fluidengineering;Gasflow;Gasvalves;Laboratories;Laboratorytesting;Laboratorytests;Measurement;Measurementofairbornenoise;Measuringtechniques;Noise;Noisecharacteristic;Noiseemissions;Noisemeasurements;Pipelines;Processcontrol;Processmeasuringandcontroltechnology;Ratings;Sound;Soundlevel;Soundpressurelevel;Soundpropagation;Testing;Valves
【摘要】:
【中国标准分类号】:J16
【国际标准分类号】:17_140_20;23_060_40
【页数】:18P.;A4
【正文语种】:英语


Product Code:SAE AMS3227
Title:Acrylonitrile Butadiene (Nbr) Rubber, Hot Oil and Coolant Resistant, Low Swell, 55-65
Issuing Committee:Ams Ce Elastomers Committee
Scope: This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for hose, packings, bushings, grommets, and seals in contact with hot, petroleum-base lubricating oils and glycol-type coolants from -40 degrees to +100 degrees C (-40 degrees to +212 degrees F).
Rationale: This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for hose, packings, bushings, grommets, and seals in contact with hot, petroleum-base lubricating oils and glycol-type coolants from -40 degrees to +100 degrees C (-40 degrees to +212 degrees F).