• EN 62788-1-4:2016

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Measurement procedures for materials used in photovoltaic modules - Part 1-4: Encapsulants - Measurement of optical transmittance and calculation of the solar-weighted photon transmittance, yellowness index, and UV cut-off wavelength

    Available format(s): 

    Superseded date:  07-12-2020

    Language(s): 

    Published date:  16-12-2016

    Publisher:  European Committee for Standards - Electrical

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Apparatus
    6 Test specimens
    7 Measurement procedure
    8 Calculation and expression of results
    9 Uncertainty of measurements
    10 Test report
    Annex A (informative) - Advanced analysis of
            transmittance (absorption coefficients)
    Annex B (informative) - Applying the quantum
            efficiency of a specific cell technology
    Bibliography
    Annex ZA (normative) - Normative references to
             international publications with their
             corresponding European publications

    Abstract - (Show below) - (Hide below)

    IEC 62788-1-4:2016 provides a method for measurement of the optical transmittance of encapsulation materials used in photovoltaic (PV) modules. The standardized measurements in this procedure quantify the expected transmittance of the encapsulation to the PV cell. Subsequent calculation of solar-weighted transmittance allows for comparison between different materials. The results for unweathered material may be used in an encapsulation manufacturer's datasheets, in manufacturer's material or process development, in manufacturing quality control (material acceptance), or applied in the analysis of module performance. This measurement method can also be used to monitor the performance of encapsulation materials after weathering, to help assess their durability.

    General Product Information - (Show below) - (Hide below)

    Committee CLC/TC 82
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    EN 62805-2:2017 Method for measuring photovoltaic (PV) glass - Part 2: Measurement of transmittance and reflectance
    I.S. EN 62805-2:2017 METHOD FOR MEASURING PHOTOVOLTAIC (PV) GLASS - PART 2: MEASUREMENT OF TRANSMITTANCE AND REFLECTANCE
    BS EN 62805-2:2017 Method for measuring photovoltaic (PV) glass Measurement of transmittance and reflectance

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 60904-3:2016 Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data
    CLC/TS 61836:2009 Solar photovoltaic energy systems - Terms, definitions and symbols
    ISO 17223:2014 Plastics — Determination of yellowness index and change in yellowness index
    EN ISO 11664-2:2011 Colorimetry - Part 2: CIE standard illuminants (ISO 11664-2:2007)
    IEC TS 61836:2007 Solar photovoltaic energy systems - Terms, definitions and symbols
    IEC 60904-3 : 3.0 PHOTOVOLTAIC DEVICES - PART 3: MEASUREMENT PRINCIPLES FOR TERRESTRIAL PHOTOVOLTAIC (PV) SOLAR DEVICES WITH REFERENCE SPECTRAL IRRADIANCE DATA
    EN ISO 11664-1:2011 Colorimetry - Part 1: CIE standard colorimetric observers (ISO 11664-1:2007)
    ISO 11664-1:2007 Colorimetry Part 1: CIE standard colorimetric observers
    EN ISO 13468-2:2006 Plastics - Determination of the total luminous transmittance of transparent materials - Part 2: Double-beam instrument (ISO 13468-2:1999)
    ISO 13468-2:1999 Plastics Determination of the total luminous transmittance of transparent materials Part 2: Double-beam instrument
    ISO 291:2008 Plastics Standard atmospheres for conditioning and testing
    IEC 60904-3:2016 Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data
    EN ISO 291:2008 Plastics - Standard atmospheres for conditioning and testing (ISO 291:2008)
    ISO 11664-2:2007 Colorimetry — Part 2: CIE standard illuminants
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