IEC TS 63140 pdf – Photovoltaic (PV) modules – Partial shade endurance testing for monolithically integrated products
This document provides test methods for quantifying the permanent change in a monolithically integrated PV module’s power output that may result from some potential partial shade conditions. Three tests are available, representing conditions of use, misuse, and most severe misuse. This document is applicable to monolithically integrated PV modules with one series- connected cell group or with multiple series-connected cell groups that are in turn connected in parallel. This document is not applicable to PV modules formed by the interconnection of separate cells. With regard to shading, PV module documentation varies significantly by manufacturer.
The physical tests prescribed in this document are applied without regard to manufacturer documentation or warranty policy, which may forbid certain shadows. The tests may therefore go beyond intended use, testing a module’s response to misuse. The tests are accelerated tests. They are intended to excite similar levels of stress as shadows that are possible during an extended period of outdoor service. The tests represent adverse shadow scenarios, but not necessarily the worst case scenario, which varies by product. The procedures are performed repeatedly and in high-irradiance conditions; shadows occurring only one time or in low- irradiance conditions are likely to cause less damage. This test procedure does not comprehensively evaluate the efficacy or completeness of manufacturer recommendations. This test procedure is not equivalent to, and is not intended to replace, the hot-spot endurance test in IEC 61215-2. The safety aspects of partial shading of PV modules are covered by IEC 61730-2 MST 22 and IEC 61215-2 MQT 09.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60904-1, Photovoltaic devices – Part 1: Measurement of photovoltaic current-voltage characteristics
IEC 60904-2, Photovoltaic devices – Part 2: Requirements for photovoltaic reference devices
IEC 60904-9, Photovoltaic devices – Part 9: Classification of solar simulator characteristics
IEC 60904-10, Photovoltaic devices – Part 10: Methods of linear dependence and linearity measurements
IEC TS 60904-13, Photovoltaic devices – Part 13: Electroluminescence of photovoltaic modules
IEC 61215-2:2021, Terrestrial photovoltaic (PV) modules – Design qualification and type approval – Part 2: Test procedures
IEC 61730-2, Photovoltaic (PV) module safety qualification – Part 2: Requirements for testing
IEC TS 61836, Solar photovoltaic energy systems – Terms, definitions and symbols
IEC 61853-1，Photovoltaic(PV)module performance testing and energy rating – Part 1:lrradiance and temperature performance measurements and power rating
3 Terms and definitions
For the purposes of this document, the terms and definitions given in lEC TS 61836 and thefollowing apply.
ISO and lEC maintain terminological databases for use in standardization at the followingaddresses:
. IEC Electropedia: available at http://www.electropedia.orgl
. Iso Online browsing platform: available at http://www.iso.orglobp.
use of a product, process or product-related service in accordance with the information for useprovided by the product manufacturer
use of a product,process or product-related
service in a way not intended by the product
manufacturer as described in the product manufacturer’s product-specific manuals andoperating instructions
Note 1 to entry: Module warranties are often voided in cases of misuse.3.3
composed of multiple solar cells built on the same substrate or superstrate and integratedthrough scribing processes during fabrication
distance between successive repetitions of the monolithic integration pattern
dimension of the module when measured parallel to the cell integration scribe lines
dimension of the module when measured perpendicular to the cell integration scribe lines
current that would pass in a long string of uniformly illuminated modules under the presentirradiance conditions and at 25 C