ASTM_E_2953_-_14.pdf

Designation:E295314Standard Specification forEvaluating Accelerated Aging Performance ofElectrochromic Devices in Sealed Insulating Glass Units1This standard is issued under the fixed designation E2953;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification is applicable to all electrochromic(EC)glass whose visible light transmittance or near infraredlight transmittance properties,or both,can be changed revers-ibly by the application or removal of an electrical voltage.Thisincludes absorptive and reflective EC devices.1.2 This specification does not apply to other types ofdynamic glass which do not solely require an electricalstimulus to change light transmittance such as photochromicand thermochromic glazings and hybrid active/passive chro-mogenics.1.3 This specification covers electrochromic devices inpreassembled permanently sealed insulting glass units with oneor more cavities in which at least one lite contains an ECdevice(which may be in the form of a laminated lite or a singlepane with coatings applied).This specification is also appli-cable to EC devices in preassembled insulating glass units withcapillary tubes intentionally left open.As such this specifica-tion also requires conformance to Specification E2190.1.4 This specification is applicable only to sealed insulatingglass units that are constructed with glass and fabricated forvision glass areas for use in buildings,such as sliding doors,windows,skylights,and exterior wall systems.1.5 Qualification under this specification is intended toprovide a basis for evaluating the aging performance ofelectrochromic devices in sealed insulating glass units.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C162 Terminology of Glass and Glass ProductsC717 Terminology of Building Seals and SealantsE631 Terminology of Building ConstructionsE2141 Test Method for Accelerated Aging of Electrochro-mic Devices in Sealed Insulating Glass UnitsE2190 Specification for Insulating Glass Unit Performanceand Evaluation3.Terminology3.1 DefinitionsFor definitions of terms found in thisspecification,refer to Terminologies C162,C717,and E631.3.2 Definitions of Terms Specific to This Standard:3.2.1 dynamic rangethe visible light transmittance rangeof an EC device,measured as the difference between thevisible light transmittance of the highest transmittance stateand the lowest transmittance state.3.2.2 electrochromic device(ECD),na combination ofmaterials that include materials in which the transmittance,reflection,and absorption properties can be altered,and otherlayers,such as transparent conducting oxide(TCO)layers foraltering the optical properties(for example,transmittance,reflectance,absorptance)of the device in response to anapplied electric field.3.2.3 electrochromic(EC)glazing,nin a prepared open-ing of a building,the material installed which consists of anECD with layer(s)of materials in which the optical propertiescan change in response to an applied electrical field,attendantmaterials,and one or more lites of glass.3.2.4 highest transmittance state,nalso referred to as theclear state or bleached state,a descriptor for an EC glazingwhen it is in the transmittance state with the highest photopicspecular light transmittance.3.2.5 lowest transmittance state,nalso referred to as thetinted state,dark state,or colored state,a descriptor for an EC1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.22on Durability Performance of Building Constructions.Current edition approved Dec.1,2014.Published January 2015.DOI:10.1520/E2953-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 glazing when it is in the transmittance state with the lowestphotopic specular light transmittance.3.2.6 sealed insulating glass unit,na preassembled unit,comprising lites of glass,which are sealed at the edges andseparated by dehydrated cavity(s),intended for vision areas ofbuildings.The unit is normally used for windows,windowwalls,picture windows,sliding doors,p