UL 61215-1-4:2021 free download

UL 61215-1-4:2021 free 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
3 Terms and definitions
This clause of IEC 61215-1:2021 is applicable without modifications.
4 Test samples
This clause of IEC 61215-1:2021 is applicable without modifications.
5 Marking and documentation
This clause of IEC 61215-1:2021 is applicable without modifications.
6 Testing
This clause of IEC 61215-1:2021 is applicable with the following modifications:
Special care has to be taken for stabilizing the power output of the module using MQT 19 procedure with
specific requirements stated in 11.19 below.
7 Pass criteria
This clause of IEC 61215-1:2021 is applicable with the following modifications.
The maximum allowable value of reproducibility is set to r= 2,0 %.
The maximum allowable value of measurement uncertainty is set to m 1 = 4,0 % for modules containing
single-junction cells, and m 1 = 5,0 % for modules containing multi-junction cells.
8 Major visual defects
This clause of IEC 61215-1:2021 is applicable without modifications.
9 Report
This clause of IEC 61215-1:2021 is applicable without modifications.
10 Modifications
This clause of IEC 61215-1:2021 is applicable without modifications.
11 Test flow and procedures
The test flow from IEC 61215-1:2021 is applicable.
11.1 Visual inspection (MQT 01)
This test of IEC 61215-2:2021 is applicable without modifications.
11.2 Maximum power determination (MQT 02)
This test of IEC 61215-2:2021 is applicable without modifications.
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.
11.9.1 Purpose
This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications.
11.9.2 Hot-spot effect
This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications.
11.9.3 Classification of cell interconnection
This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications.
11.9.4 Apparatus
This subclause of IEC 61215-2:2021, test MQT 09, is applicable without modifications.