UL 61215-1-4-2021 pdf download

UL 61215-1-4-2021 pdf download.Terrestrial Photovoltaic (PV) Modules – Design Qualification and Type Approval – Part 1-4: Special Requirements for Testing of Thin-Film Cu(In,Ga)(S,Se) 2 Based Photovoltaic (PV) Modules.
This document is intended to apply to all thin-film Cu(In,Ga)(S,Se) 2 based terrestrial flat plate modules. As such it addresses special requirements for testing of this technology supplementing IEC 61215-1:2021 and IEC 61215-2:2021 requirements for testing. This document does not apply to modules used with concentrated sunlight although it may be utilized for low concentrator modules (1 to 3 suns). For low concentration modules, all tests are performed using the irradiance, current, voltage and power levels expected at the design concentration. The object of this test sequence is to determine the electrical characteristics of the module and to show, as far as possible within reasonable constraints of cost and time, that the module is capable of withstanding prolonged exposure outdoors. Accelerated test conditions are empirically based on those necessary to reproduce selected observed field failures and are applied equally across module types. Acceleration factors may vary with product design and thus not all degradation mechanisms may manifest. Further general information on accelerated test methods including definitions of terms may be found in IEC 62506. Some long-term degradation mechanisms can only reasonably be detected via component testing, due to long times required to produce the failure and necessity of stress conditions that are expensive to produce over large areas. Component tests that have reached a sufficient level of maturity to set pass/fail criteria with high confidence are incorporated into the IEC 61215 series via addition to Table 1 in IEC 61215-1. In contrast, the tests procedures described in this series, in IEC 61215-2, are performed on modules. This document defines PV technology dependent modifications to the testing procedures and requirements per IEC 61215-1:2021 and IEC 61215-2:2021.
11.3 Insulation test (MQT 03) This test of IEC 61215-2:2021 is applicable without modifications. 11.4 Measurement of temperature coefficients (MQT 04) This test of IEC 61215-2:2021 is applicable without modifications. 11.5 Placeholder section, formerly NMOT This subclause of IEC 61215-2:2021 does not require technology-specific modifications. 11.6 Performance at STC (MQT 06.1) This test of IEC 61215-2:2021 is applicable without modifications. 11.7 Performance at low irradiance (MQT 07) This test of IEC 61215-2:2021 is applicable without modifications. 11.8 Outdoor exposure test (MQT 08) This test of IEC 61215-2:2021 is applicable without modifications. 11.9 Hot-spot endurance test (MQT 09) This test of IEC 61215-2:2021 is applicable with the following modifications: Cu(In,Ga)(S,Se) 2 thin-film modules may exhibit performance changes with extended time in storage without light exposure (the “dark soak” effect). In order to minimize the influence of this dark soak effect, limit the time delay between the outdoor exposure or stabilization and the hot spot procedure to within 2 to 3 days. During the first hour after the hot-spot procedure is complete, no additional heating or light beyond room ambient shall be applied. If the time delay is to exceed 1 h, the modules are to be stored in the dark at ≤ 25 °C.
11.9.5 Procedure MQT 09.2 of IEC 61215-2:2021 shall be performed for any monolithically integrated (MLI) module design. If the module is constructed by interconnection of cell-like substructures, MQT 09.1 of IEC 61215-2:2021 may be applicable. 11.9.6 Final measurements This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications. 11.9.7 Requirements This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications. 11.10 UV preconditioning test (MQT 10) This test of IEC 61215-2:2021 is applicable without modifications. 11.11 Thermal cycling test (MQT 11) This test of IEC 61215-2:2021 is applicable with the following modifications: MQT 11 of IEC 61215-2:2021 can be conducted according to the following methods: Method A) Perform MQT 11 as defined in IEC 61215-2:2021, with the technology specific current equal to 0,1 × STC peak power current. If 0,1 × STC peak power current is less than 100 mA, then 100 mA may be applied instead.UL 61215-1-4-2021 pdf download.