IEC 62817-2014 pdf – Photovoltaic systems – Design qualification of solar trackers

IEC 62817-2014 pdf – Photovoltaic systems – Design qualification of solar trackers.
1 Scope and object This International Standard is a design qualification standard applicable to solar trackers for photovoltaic systems, but may be used for trackers in other solar applications. The standard defines test procedures for both key components and for the complete tracker system. In some cases, test procedures describe methods to measure and/or calculate parameters to be reported in the defined tracker specification sheet. In other cases, the test procedure results in a pass/fail criterion. The objective of this design qualification standard is twofold. First, this standard ensures the user of the said tracker that parameters reported in the specification sheet were measured by consistent and accepted industry procedures. This provides customers with a sound basis for comparing and selecting a tracker appropriate to their specific needs. This standard provides industry-wide definitions and parameters for solar trackers. Each vendor can design, build, and specify the functionality and accuracy with uniform definition. This allows consistency in specifying the requirements for purchasing, comparing the products from different vendors, and verifying the quality of the products. Second, the tests with pass/fail criteria are engineered with the purpose of separating tracker designs that are likely to have early failures from those designs that are sound and suitable for use as specified by the manufacturer. Mechanical and environmental testing in this standard is designed to gauge the tracker’s ability to perform under varying operating conditions, as well as to survive extreme conditions. Mechanical testing is not intended to certify structural and foundational designs, because this type of certification is specific to local jurisdictions, soil types, and other local requirements.
2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal) IEC 60068-2-21 , Environmental testing – Part 2-21: Tests – Test U: Robustness of terminations and integral mounting devices IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock IEC 60068-2-75, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 60904-3:2008, Photovoltaic devices – Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data IEC 61 000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test
IEC 62262:2002, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code) ISO/IEC 1 7025, General requirements for the competence of testing and calibration laboratories ISO 1 21 03-1 , Road vehicles – Test dust for filter evaluation – Part 1: Arizona test dust 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. For additional tracker-specific terminology, see Clause 6. 3.1 photovoltaics PV devices that use solar radiation to directly generate electrical energy 3.2 concentrator photovoltaics CPV devices that focus magnified sunlight on photovoltaics to generate electrical energy. The sunlight could be magnified by various different methods, such as reflective or refractive optics, in dish, trough, lens, or other configurations 3.3 concentrator module CPV module group of receivers (PV cells mounted in some way), optics, and other related components, such as interconnections and mechanical enclosures, integrated together into a modular package. The module is typically assembled in a factory and shipped to an installation site to be installed along with other modules on a solar tracker Note 1 to entry: The module is typically assembled in a factory and shipped to an installation site to be installed along with other modules on a solar tracker. Note 2 to entry: A CPV module typically does not have a field-adjustable focus point. In addition, a module could be made of several sub-modules. The sub-module is a smaller, modular portion of the full-size module, which might be assembled into the full module either in a factory or in the field.