{"id":3866,"date":"2026-09-22T12:04:11","date_gmt":"2026-09-22T12:04:11","guid":{"rendered":"https:\/\/qualitanceindia.com\/?p=3866"},"modified":"2026-09-22T12:04:11","modified_gmt":"2026-09-22T12:04:11","slug":"bis-crs-certification-for-thin-film-terrestrial-photovoltaic-pv-modules-a-si-cigs-cdte-is-14286-series2023-bis-consultancy","status":"publish","type":"post","link":"https:\/\/qualitanceindia.com\/bis-crs-certification-for-thin-film-terrestrial-photovoltaic-pv-modules-a-si-cigs-cdte-is-14286-series2023-bis-consultancy\/","title":{"rendered":"BIS CRS Certification for Thin-Film Terrestrial Photovoltaic (PV) Modules (a-Si, CIGS & CdTe) | IS 14286 Series:2023 | BIS Consultancy"},"content":{"rendered":"

Introduction<\/h2>\n

Thin-film photovoltaic (PV) modules are an important category of solar technology used for electricity generation in utility-scale, commercial, industrial and other photovoltaic applications. Unlike conventional crystalline-silicon modules, thin-film modules use semiconductor layers deposited onto a substrate, with technologies including amorphous silicon (a-Si), cadmium telluride (CdTe), and CIGS<\/strong>.<\/p>\n

For manufacturers and importers supplying these products in India, compliance with applicable Bureau of Indian Standards (BIS) requirements is an important part of market entry.<\/p>\n

The BIS framework for thin-film terrestrial photovoltaic modules is based on the IS 14286 series:2023 \u2013 Terrestrial Photovoltaic (PV) Modules \u2013 Design Qualification and Type Approval<\/strong>. BIS’s official test-report format identifies separate special-requirement sections for crystalline silicon, thin-film CdTe, thin-film amorphous silicon and thin-film CIGS technologies.<\/p>\n

The current BIS Scheme-II page identifies Thin-Film Terrestrial Photovoltaic (PV) Modules (a-Si, CIGS and CdTe)<\/strong> as a product category under the compulsory-registration framework.<\/p>\n

What Is BIS CRS Certification for Thin-Film PV Modules?<\/h2>\n

BIS CRS certification\/registration provides the applicable conformity route for notified products covered under the BIS Compulsory Registration Scheme.<\/p>\n

For thin-film terrestrial PV modules, the applicable technical requirements are addressed through the IS 14286 series and the relevant technology-specific section.<\/p>\n

The current 2023 series includes:<\/p>\n

    \n
  • IS 14286 (Part 1):2023<\/strong> \u2013 Terrestrial photovoltaic (PV) modules \u2013 Design qualification and type approval \u2013 Part 1: Test requirements<\/li>\n
  • IS 14286 (Part 2):2023<\/strong> \u2013 Test procedures<\/li>\n
  • IS 14286 (Part 1\/Sec 1):2023<\/strong> \u2013 Special requirements for crystalline silicon PV modules<\/li>\n
  • IS 14286 (Part 1\/Sec 2):2023<\/strong> \u2013 Special requirements for thin-film cadmium telluride (CdTe) based PV modules<\/li>\n
  • IS 14286 (Part 1\/Sec 3):2023<\/strong> \u2013 Special requirements for thin-film amorphous silicon based PV modules<\/li>\n
  • IS 14286 (Part 1\/Sec 4):2023<\/strong> \u2013 Special requirements for thin-film Cu(In,Ga)(S,Se)\u2082 based PV modules<\/li>\n<\/ul>\n

    Therefore, the exact section applicable to a thin-film PV module depends on its photovoltaic technology.<\/p>\n

    Important Standard Clarification: a-Si, CIGS and CdTe<\/h2>\n

    It is important to distinguish the individual sections of the IS 14286 series.<\/p>\n

    Thin-Film Cadmium Telluride (CdTe)<\/h3>\n

    For CdTe-based thin-film modules, the applicable technology-specific standard is:<\/p>\n

    IS 14286 (Part 1\/Sec 2):2023<\/strong><\/p>\n

    This is the standard specifically named for thin-film Cadmium Telluride (CdTe) based photovoltaic modules<\/strong>.<\/p>\n

    Thin-Film Amorphous Silicon (a-Si)<\/h3>\n

    For amorphous-silicon thin-film modules, the applicable technology-specific section is:<\/p>\n

    IS 14286 (Part 1\/Sec 3):2023<\/strong><\/p>\n

    BIS laboratory listings specifically identify this section as the standard for thin-film amorphous silicon based photovoltaic modules.<\/p>\n

    Thin-Film CIGS<\/h3>\n

    For CIGS-based thin-film modules, the applicable section is:<\/p>\n

    IS 14286 (Part 1\/Sec 4):2023<\/strong><\/p>\n

    BIS identifies this as the section for thin-film Cu(In,Ga)(S,Se)\u2082 based photovoltaic modules.<\/p>\n

    This distinction is important when selecting a laboratory and preparing a BIS certification application.<\/p>\n

    What Are Thin-Film Photovoltaic Modules?<\/h2>\n

    Thin-film PV modules are solar modules in which photovoltaic semiconductor material is deposited in thin layers over a suitable substrate.<\/p>\n

    Common thin-film technologies include:<\/p>\n

    Amorphous Silicon (a-Si)<\/h3>\n

    Amorphous silicon uses a non-crystalline form of silicon as the photovoltaic semiconductor.<\/p>\n

    Cadmium Telluride (CdTe)<\/h3>\n

    CdTe modules use cadmium telluride as the semiconductor material and are widely used in certain utility-scale and commercial PV applications.<\/p>\n

    CIGS<\/h3>\n

    CIGS refers to copper indium gallium diselenide\/sulfide-related thin-film photovoltaic technology. BIS’s current standard terminology identifies the technology under Cu(In,Ga)(S,Se)\u2082<\/strong>.<\/p>\n

    The certification requirements should be determined according to the actual technology used in the module.<\/p>\n

    Why Is BIS Certification Important for Thin-Film Solar Modules?<\/h2>\n

    Thin-film PV modules are electrical products intended for long-term outdoor energy-generation applications. Their performance and safety can be affected by:<\/p>\n

      \n
    • Temperature<\/li>\n
    • Humidity<\/li>\n
    • UV exposure<\/li>\n
    • Mechanical loads<\/li>\n
    • Moisture<\/li>\n
    • Electrical insulation<\/li>\n
    • Outdoor environmental conditions<\/li>\n
    • Module degradation<\/li>\n
    • Interconnection reliability<\/li>\n
    • Junction-box construction<\/li>\n
    • Termination strength<\/li>\n<\/ul>\n

      BIS testing under the applicable IS 14286 series helps assess the module against the prescribed design-qualification and type-approval requirements.<\/p>\n

      Scope of BIS Requirements for Thin-Film PV Modules<\/h2>\n

      The BIS framework covers thin-film terrestrial photovoltaic modules using technologies including:<\/p>\n

        \n
      • Amorphous silicon (a-Si)<\/li>\n
      • Cadmium telluride (CdTe)<\/li>\n
      • CIGS<\/li>\n<\/ul>\n

        The relevant technology-specific sections are included in the BIS 2023 test-report framework.<\/p>\n

        The exact testing programme depends on the module technology, construction and applicable standard requirements.<\/p>\n

        Testing Requirements for Thin-Film PV Modules<\/h2>\n

        Testing is a major part of demonstrating compliance.<\/p>\n

        Current BIS LIMS listings show testing facilities for IS 14286 (Part 1\/Sec 2):2023<\/strong>, including laboratories offering testing specifically for thin-film CdTe PV modules.<\/p>\n

        Testing areas can include:<\/p>\n

          \n
        • Major visual defects<\/li>\n
        • Visual inspection<\/li>\n
        • Maximum power determination<\/li>\n
        • Insulation testing<\/li>\n
        • Temperature coefficient measurement<\/li>\n
        • Nominal module operating temperature<\/li>\n
        • Performance at standard test conditions<\/li>\n
        • Performance at NMOT<\/li>\n
        • Performance at low irradiance<\/li>\n
        • Outdoor exposure<\/li>\n
        • Hot-spot endurance<\/li>\n
        • UV preconditioning<\/li>\n
        • Thermal cycling<\/li>\n
        • Humidity-freeze<\/li>\n
        • Damp heat<\/li>\n
        • Robustness of terminations<\/li>\n
        • Wet leakage current<\/li>\n
        • Static mechanical load<\/li>\n
        • Hail<\/li>\n
        • Bypass diode testing<\/li>\n
        • Stabilization<\/li>\n
        • Cyclic\/dynamic mechanical load<\/li>\n
        • Potential-induced degradation<\/li>\n
        • Bending test<\/li>\n
        • Marking and documentation<\/li>\n<\/ul>\n

          The exact tests and applicability depend on the relevant section and module technology. Current BIS laboratory listings show many of these tests under the CdTe section.<\/p>\n

          Major Visual Defects and Visual Inspection<\/h2>\n

          The module is visually inspected for defects that could affect its safety, construction or performance.<\/p>\n

          The evaluation can include aspects such as:<\/p>\n

            \n
          • Cracks<\/li>\n
          • Delamination<\/li>\n
          • Surface defects<\/li>\n
          • Cell\/module construction<\/li>\n
          • Encapsulation<\/li>\n
          • Frame condition<\/li>\n
          • Junction-box condition<\/li>\n
          • Connections<\/li>\n
          • Labels and markings<\/li>\n<\/ul>\n

            The applicable test procedure should be followed for the specific module technology.<\/p>\n

            Maximum Power Determination<\/h2>\n

            Maximum power determination is an important performance evaluation for photovoltaic modules.<\/p>\n

            The module’s electrical output characteristics are measured under the applicable test conditions to determine the relevant power parameters.<\/p>\n

            This provides important information regarding the declared performance of the module.<\/p>\n

            Insulation Test<\/h2>\n

            Electrical insulation is evaluated to verify the module’s ability to provide the required electrical separation.<\/p>\n

            This is particularly important because PV modules operate outdoors and may be exposed to moisture and other environmental conditions.<\/p>\n

            Temperature Coefficients<\/h2>\n

            Photovoltaic module output can vary with temperature.<\/p>\n

            The applicable testing therefore includes measurement of temperature coefficients so that the module’s electrical characteristics can be evaluated under temperature variations.<\/p>\n

            Performance at STC and NMOT<\/h2>\n

            Testing can include evaluation of module performance at:<\/p>\n

              \n
            • Standard Test Conditions (STC)<\/li>\n
            • Nominal Module Operating Temperature (NMOT)<\/li>\n<\/ul>\n

              These evaluations help characterize the electrical output of the module under defined conditions.<\/p>\n

              Performance at Low Irradiance<\/h2>\n

              Solar modules can experience conditions where the available solar irradiance is lower than standard test conditions.<\/p>\n

              The applicable test evaluates the module’s performance under low-irradiance conditions.<\/p>\n

              Outdoor Exposure Testing<\/h2>\n

              Outdoor exposure testing evaluates the ability of the module to withstand specified environmental exposure.<\/p>\n

              This can be important for modules intended for long-term outdoor installation.<\/p>\n

              Hot-Spot Endurance Test<\/h2>\n

              Hot-spot conditions can occur when part of a photovoltaic module operates differently from the rest of the module.<\/p>\n

              The applicable test evaluates the module’s ability to withstand specified hot-spot conditions without creating unacceptable safety or performance problems.<\/p>\n

              UV Preconditioning<\/h2>\n

              Thin-film PV modules are exposed to sunlight for long periods.<\/p>\n

              UV preconditioning evaluates the module under specified ultraviolet exposure before subsequent testing.<\/p>\n

              Thermal Cycling<\/h2>\n

              PV modules experience repeated heating and cooling during normal outdoor operation.<\/p>\n

              Thermal cycling testing evaluates the module’s ability to withstand repeated temperature changes.<\/p>\n

              Humidity-Freeze Testing<\/h2>\n

              Modules installed outdoors can experience both moisture and low-temperature conditions.<\/p>\n

              Humidity-freeze testing evaluates the module under specified humidity and freezing cycles.<\/p>\n

              Damp Heat Testing<\/h2>\n

              Damp heat testing evaluates module durability under elevated temperature and humidity conditions.<\/p>\n

              This is an important environmental test for products designed for long-term outdoor operation.<\/p>\n

              Mechanical Load Testing<\/h2>\n

              PV modules can experience wind, snow and other mechanical loads depending on the installation environment.<\/p>\n

              Applicable mechanical testing can include:<\/p>\n