IEC 62788-1-4:2016/AMD1:2020
Amendment 1 - 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
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About This Item
IEC 62788-1-4:2016/AMD1:2020 is a supporting amendment for photovoltaic module material assessment, focused on encapsulants and their optical properties. It addresses measurement procedures for optical transmittance and the calculation of solar-weighted photon transmittance, yellowness index, and UV cut-off wavelength, making it relevant for technical review, laboratory evaluation, and documented evaluation of material performance. For organizations handling product qualification or compliance workflows, IEC 62788-1-4:2016/AMD1:2020 helps align testing and reporting with the parent document and its amendment path.
IEC 62788-1-4:2016/AMD1:2020 standard overview
This amendment modifies the parent reference IEC 62788-1-4:2016 and should be used as a connected technical document rather than a standalone specification. Its scope is centered on encapsulants used in photovoltaic modules, with emphasis on how optical transmittance is measured and how related calculated values are determined. That makes it useful for engineering documentation, test method alignment, and conformity assessment preparation where consistent interpretation of material optical behavior is important for quality workflows and technical validation.
Applications of IEC 62788-1-4:2016/AMD1:2020
The document is typically used in photovoltaic material testing, supplier qualification, and product evaluation for encapsulants intended for module assembly. It may support laboratory workflows that compare optical performance across batches, verify stability-related indicators, or document changes in material appearance and UV response. Procurement teams and compliance specialists may also use IEC 62788-1-4:2016/AMD1:2020 during technical review when evaluating whether a material submission aligns with the required measurement and reporting framework for module-related quality control.
Why IEC 62788-1-4:2016/AMD1:2020 matters
Accurate optical measurement of encapsulants can affect engineering decisions, risk management, and long-term product consistency in photovoltaic modules. By clarifying how key values are measured or calculated, this amendment supports repeatable testing workflows and improves the reliability of technical assessment results. It is especially relevant when organizations are preparing conformity assessment evidence, comparing supplier data, or maintaining operational consistency across procurement and verification activities. Using the amendment alongside the parent document can also reduce ambiguity during quality assurance and regulatory preparation.
- Supporting amendment linked to IEC 62788-1-4:2016 for photovoltaic encapsulant evaluation
- Focused on optical transmittance measurement and related calculated indicators
- Useful for laboratory evaluation, test method alignment, and documented verification
- Relevant to quality workflows, supplier review, and conformity assessment preparation
- Helps maintain consistency in technical reporting for encapsulant optical performance
- Publication Date: 2020-10-15
- Standard Status: Amendment
- Publisher: IEC
- Edition: 1
- This Version: IEC 62788-1-4:2016 (2020-10-15)
- Previous Version: IEC 62788-1-4:2016 (2016-09-27)
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