ASTM E1171-04

    Standard Test Methods for Photovoltaic Modules in Cyclic Temperature and Humidity Environments


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    1. Scope

    1.1 These test methods provide procedures for stressing photovoltaic modules in simulated temperature and humidity environments. Environmental testing is used to simulate aging of module materials on an accelerated basis.

    1.2 Three individual environmental test procedures are defined by these test methods: a thermal cycling procedure, a humidity-freeze cycling procedure, and an extended duration damp heat procedure. Electrical biasing is utilized during the thermal cycling procedure to simulate stresses that are known to occur in field-deployed modules.

    1.3 These test methods define mounting methods for modules undergoing environmental testing, and specify parameters that must be recorded and reported.

    1.4 These test methods do not establish pass or fail levels. The determination of acceptable or unacceptable results is beyond the scope of these test methods.

    1.5 Any of the individual environmental tests may be performed singly, or may be combined into a test sequence with other environmental or non-environmental tests, or both. Certain pre-conditioning tests such as annealing or light soaking may also be necessary or desirable as part of such a sequence. The determination of any such sequencing and pre-conditioning is beyond the scope of this test method.

    1.6 These test procedures are limited in duration and therefore the results of these tests cannot be used to determine photovoltaic module lifetimes.

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E772 Terminology of Solar Energy Conversion

    E1036 Test Methods for Electrical Performance of Nonconcentrator Terrestrial Photovoltaic Modules and Arrays Using Reference Cells

    E1462 Test Methods for Insulation Integrity and Ground Path Continuity of Photovoltaic Modules

    E1799 Practice for Visual Inspections of Photovoltaic Modules


    ICS Code

    ICS Number Code 27.160 (Solar energy engineering)

    UNSPSC Code

    UNSPSC Code 32111701(Photovoltaic cells)


    Referencing This Standard
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    DOI: 10.1520/E1171-04

    Citation Format

    ASTM E1171-04, Standard Test Methods for Photovoltaic Modules in Cyclic Temperature and Humidity Environments, ASTM International, West Conshohocken, PA, 2004, www.astm.org

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