prEN IEC 61853-2:2025
(Main)Photovoltaic (PV) module performance testing and energy rating - Part 2: Spectral responsivity, incidence angle and nominal module operating temperature measurements
Photovoltaic (PV) module performance testing and energy rating - Part 2: Spectral responsivity, incidence angle and nominal module operating temperature measurements
Prüfung des Leistungsverhaltens von photovoltaischen (PV-)Modulen und Energiebemessung - Teil 2: Messung der spektralen Empfindlichkeit, des Einfallswinkels und der Modul-Betriebstemperatur
Essais de performance et caractéristiques assignées d'énergie des modules photovoltaïques (PV) - partie 2: Mesurages de réponse spectrale, d'angle d'incidence et de température nominale de fonctionnement des modules
Preskušanje zmogljivosti in energijske učinkovitosti fotonapetostnega (PV) modula - 2. del: Meritve spektralne odzivnosti, vpadnega kota in obratovalne temperature modula
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Preskušanje zmogljivosti in energijske učinkovitosti fotonapetostnega (PV)
modula - 2. del: Meritve spektralne odzivnosti, vpadnega kota in obratovalne
temperature modula
Photovoltaic (PV) module performance testing and energy rating - Part 2: Spectral
responsivity, incidence angle and nominal module operating temperature measurements
Prüfung des Leistungsverhaltens von photovoltaischen (PV-)Modulen und
Energiebemessung - Teil 2: Messung der spektralen Empfindlichkeit, des Einfallswinkels
und der Modul-Betriebstemperatur
Essais de performance et caractéristiques assignées d'énergie des modules
photovoltaïques (PV) - partie 2: Mesurages de réponse spectrale, d'angle d'incidence et
de température nominale de fonctionnement des modules
Ta slovenski standard je istoveten z: prEN IEC 61853-2:2025
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
27.160 Sončna energija Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
82/2410/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61853-2 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-06-20 2025-09-12
SUPERSEDES DOCUMENTS:
82/2298/CD, 82/2318A/CC
IEC TC 82 : SOLAR PHOTOVOLTAIC ENERGY SYSTEMS
SECRETARIAT: SECRETARY:
United States of America Mr George Kelly
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Photovoltaic (PV) module performance testing and energy rating - Part 2: Spectral responsivity,
incidence angle and nominal module operating temperature measurements
PROPOSED STABILITY DATE: 2031
NOTE FROM TC/SC OFFICERS:
This project was discussed and supported by WG2 during their meeting in 2025-04.
Project tile updated with the word 'nominal' added in. Old project title: Photovoltaic (PV) module performance
testing and energy rating - Part 2: Spectral responsivity, incidence angle and module operating temperature
measurements
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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2 IEC CDV 61853-2 ED2 © IEC 2025
1 CONTENTS
3 FOREWORD . 6
4 INTRODUCTION . 8
5 1 Scope . 9
6 2 Normative references . 9
7 3 Terms and definitions . 10
8 4 Sampling . 12
9 4.1 Representative samples . 13
10 5 Testing . 13
11 5.1 Initial stabilization . 13
12 5.2 Test flow . 13
13 6 Procedure for spectral responsivity measurement . 14
14 7 Procedure for the measurement of incidence angle effect . 15
15 7.1 Purpose . 15
16 7.2 Indoor test method 1: irradiation on full cell (or module) or on an optically
17 equivalent device . 16
18 7.2.1 General . 16
19 7.2.2 Test sample preparation . 16
20 7.2.3 Apparatus . 17
21 7.2.4 Set-up procedure . 18
22 7.2.5 Measurement procedure . 19
23 7.2.6 Data evaluation . 20
24 7.2.7 Uncertainty contributions . 21
25 7.3 Indoor test method 2: irradiation on a partially shaded cell in a module . 21
26 7.3.1 General . 21
27 7.3.2 Test sample preparation . 21
28 7.3.3 Apparatus . 22
29 7.3.4 Set-up procedure . 22
30 7.3.5 Measurement procedure for c-Si PV modules with series-connected
31 cells . 22
32 7.3.6 Measurement procedure for c-Si PV modules with series-parallel
33 connection . 23
34 7.3.7 Measurement procedure for monolithically integrated thin-film PV
35 modules . 23
36 7.3.8 Data evaluation . 23
37 7.3.9 Uncertainty contributions . 24
38 7.4 Indoor test method 3: partial irradiation (on cells or modules) . 24
39 7.4.1 General . 24
40 7.4.2 Test sample preparation . 24
41 7.4.3 Apparatus . 24
42 7.4.4 Set-up procedure . 26
43 7.4.5 Measurement procedure for cells (indoor method 3a) . 26
44 7.4.6 Measurement procedure for modules (indoor method 3b) . 27
45 7.4.7 Data evaluation . 27
46 7.4.8 Uncertainty contributions . 27
47 7.5 Indoor test method 4: spectrally resolved method . 27
IEC CDV 61853-2 ED2 © IEC 2025 3
48 7.5.1 General . 27
49 7.5.2 Test sample preparation . 28
50 7.5.3 Apparatus . 28
51 7.5.4 Set-up procedure . 29
52 7.5.5 Measurement procedure for cells (indoor method 4a) and module
53 (indoor method 4b) . 29
54 7.5.6 Data evaluation . 29
55 7.5.7 Uncertainty contributions . 30
56 7.6 Outdoor test method 1: absolute method . 30
57 7.6.1 General . 30
58 7.6.2 Apparatus . 30
59 7.6.3 Set-up procedure . 31
60 7.6.4 Measurement procedure . 32
61 7.6.5 Tabulation of the relative internal angular transmittance 𝜏𝜏 (𝜃𝜃) . 33
rel
62 7.6.6 Uncertainty contributions . 33
63 7.7 Outdoor test method 2: relative method . 34
64 7.7.1 General . 34
65 7.7.2 Apparatus . 34
66 7.7.3 Set-up procedure . 34
67 7.7.4 Measurement procedure . 35
68 7.7.5 Uncertainty contributions . 36
69 7.8 Interpolation of the relative internal angular transmittance 𝜏𝜏 (𝜃𝜃) . 36
rel
70 8 Methodology for determining coefficients for calculating the Nominal Module
71 Operating Temperature (NMOT) . 36
72 8.1 General . 36
73 8.2 PV module temperature model . 37
74 8.3 Apparatus . 37
75 8.4 Test module mounting . 38
76 8.5 Procedure . 38
77 8.5.1 Data recording . 39
78 8.5.2 Data filtering . 39
79 8.5.3 Determination of 𝑢𝑢 . 40
80 8.5.4 Determination of 𝑢𝑢 . 40
81 8.5.5 Calculation of NMOT . 40
82 8.6 Uncertainty sources . 41
83 9 Report . 41
84 9.1 Specific requirements for measurements of SR . 41
85 9.2 Specific requirements for measurements of the incidence angle effect . 42
86 9.3 Specific requirements for measurements of NMOT . 44
87 Annex A (informative) Specific exceptions for photovoltaic modules installed on
88 buildings . 45
89 A.1 Spectral responsivity of coloured modules . 45
90 A.1.1 Size of the incident monochromatic beam: over-irradiation and under-
91 irradiation modes . 45
92 A.1.2 Spectral responsivity measurements of monochrome samples . 46
93 A.1.3 Spectral responsivity measurements of polychrome samples with
94 repeated pattern . 47
95 A.1.4 Spectral responsivity measurements of polychrome samples with non-
96 repeated pattern . 47
97 A.1.5 Spectral responsivity of gradient-coloured samples .
...
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