Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 1: Test requirements

IEC 61215-1:2016 lays down requirements for the design qualification and type approval of terrestrial photovoltaic (PV) modules suitable for long-term operation in general open-air climates, as defined in IEC 60721-2-1. This standard is intended to apply to all terrestrial flat plate module materials such as crystalline silicon module types as well as thin-film modules. The objective of this test sequence is to determine the electrical and thermal 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 in climates described in the scope. This edition of IEC 61215-1 includes the following significant technical changes with respect to the second edition of IEC 61215:2005: new standard series structure consistent with other IEC standards: Part 1 lists general requirements, Part 1-x specifics for each PV technology and Part 2 defines testing. All tests defined in Part 2 are MQTs (module quality tests).

Modules photovoltaïques (PV) pour applications terrestres - Qualification de la conception et homologation - Partie 1: Exigences d'essai

L'IEC 61215-1:2016 établit les exigences pour la qualification de la conception et l'homologation des modules photovoltaïques (PV) pour applications terrestres et pour une utilisation de longue durée dans les climats généraux à l'air libre, définis dans l'IEC 60721-2-1. La présente norme est destinée à s'appliquer à tous les matériaux de modules à plaque plane au silicium cristallin pour applications terrestres (p. ex.: types de modules au silicium cristallin et modules à couches minces). L'objet de cette séquence d'essais est de déterminer les caractéristiques électriques et thermiques du module et de montrer, dans la mesure du possible avec des contraintes de coût et de temps raisonnables, que le module est apte à supporter une exposition prolongée aux climats définis dans le domaine d'application. Cette édition de l'IEC 61215-1 inclut les modifications techniques majeures suivantes par rapport à la deuxième édition de l'IEC 61215:2005: Réorganisation de la série de normes selon une structure cohérente avec les autres normes de l'IEC. La Partie 1 répertorie les exigences générales, les Partie 1-x établissent les exigences spécifiques à chaque technologie photovoltaïque (PV), tandis que la Partie 2 définit les essais. Tous les essais définis dans la Partie 2 sont des essais de qualité des modules (MQT, Module Quality Test).

General Information

Status
Published
Publication Date
08-Mar-2016
Drafting Committee
Current Stage
DELPUB - Deleted Publication
Start Date
23-Feb-2021
Completion Date
29-Sep-2017
Ref Project

Relations

Overview

IEC 61215-1:2016 is an international standard developed by the International Electrotechnical Commission (IEC) that sets forth the design qualification and type approval test requirements for terrestrial photovoltaic (PV) modules. This standard applies to flat-plate terrestrial PV modules including crystalline silicon and thin-film technologies, designed for durable operation in general open-air climates as defined by IEC 60721-2-1. The document establishes test sequences aimed at validating electrical and thermal characteristics, ensuring modules can endure prolonged environmental exposure while maintaining performance.

This standard forms the first part of a series: Part 1 defines general requirements, while Part 2 covers detailed test procedures. It represents a significant revision from the 2005 edition, aligning with newer IEC structural approaches and updating test definitions to Module Quality Tests (MQTs).

Key Topics

  • Scope and Applicability: IEC 61215-1:2016 applies broadly to all terrestrial flat-plate PV modules, including both crystalline and thin-film types. It excludes high-concentration photovoltaic modules but allows use for low-concentrator modules (1 to 3 suns) with tests adjusted accordingly.

  • Design Qualification Objectives: The standard aims to certify modules for long-term outdoor functionality by evaluating their electrical output and thermal stability under accelerated aging and climatic stress, with the objective of ensuring reliability over the module’s operational lifespan.

  • Test Structure and Pass Criteria:

    • Divided into two main "gates" for performance verification:
      • Gate No. 1 confirms initial module power output at Standard Test Conditions (STC) against nameplate ratings.
      • Gate No. 2 assesses maximum power degradation after accelerated aging tests.
    • Additional checks cover electrical circuitry integrity, visual defects, and electrical safety requirements.
  • Marking and Documentation: Requirements for clear nameplate marking and comprehensive documentation (including assembly instructions) are specified to ensure traceability and proper use.

  • Sampling Procedures: Updated sampling methods define how test samples are selected for design qualification to maintain consistency and representativeness.

  • Terminology and Temperature Metrics: Introduces the use of Nominal Module Operating Temperature (NMOT) for temperature assessments, replacing NOCT, with reference to IEC 61853-2 for relevant procedures.

  • Standard Integration: The document incorporates references to related standards such as IEC 60891 for temperature and irradiance corrections, IEC 60904 series for PV device measurements, and IEC 61730-2 for safety testing.

Applications

  • Quality Assurance for PV Manufacturers: IEC 61215-1:2016 provides a framework for manufacturers to validate module designs prior to market release, ensuring compliance with international durability and performance standards.

  • Certification and Type Approval: Certification bodies use this standard to perform design qualification testing and grant approvals needed for modules to enter global markets.

  • Product Development and Testing Labs: R&D teams and testing laboratories implement this standard to evaluate prototype modules, characterize performance under environmental stress, and verify adherence to technical requirements.

  • System Designers and Installers: Ensures that selected PV modules have undergone rigorous quality scrutiny, supporting system reliability and long-term energy yield in general outdoor environments.

  • Regulatory Compliance: Supports regulatory frameworks mandating certified photovoltaic components, enhancing consumer confidence and system safety.

Related Standards

  • IEC 61215-2: Specifies the detailed test procedures corresponding to IEC 61215-1 requirements, focusing on the execution of module quality tests.

  • IEC 61730-2: Addresses photovoltaic module safety qualification, complementing design qualification with safety evaluations.

  • IEC 60891: Describes procedures for temperature and irradiance corrections applied in I–V characteristic measurement.

  • IEC 60904 Series: Covers measurement methodologies for photovoltaic devices including current-voltage characterization and spectral irradiance standards.

  • IEC 61853-1 & IEC 61853-2: Relate to performance testing and energy rating of PV modules, with specific reference to operating temperature measurements used in IEC 61215-1.

  • IEC 60721-2-1: Defines environmental conditions (climate classes) for long-term outdoor exposure relevant to terrestrial PV module qualification.


By adhering to IEC 61215-1:2016 standards, manufacturers and stakeholders ensure photovoltaic modules are rigorously tested for extended durability and reliable performance in typical global climates, fostering consistent quality and accelerating deployment of solar energy solutions worldwide.

Standard
IEC 61215-1:2016 - Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 1: Test requirements
English and French language
37 pages
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Frequently Asked Questions

IEC 61215-1:2016 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 1: Test requirements". This standard covers: IEC 61215-1:2016 lays down requirements for the design qualification and type approval of terrestrial photovoltaic (PV) modules suitable for long-term operation in general open-air climates, as defined in IEC 60721-2-1. This standard is intended to apply to all terrestrial flat plate module materials such as crystalline silicon module types as well as thin-film modules. The objective of this test sequence is to determine the electrical and thermal 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 in climates described in the scope. This edition of IEC 61215-1 includes the following significant technical changes with respect to the second edition of IEC 61215:2005: new standard series structure consistent with other IEC standards: Part 1 lists general requirements, Part 1-x specifics for each PV technology and Part 2 defines testing. All tests defined in Part 2 are MQTs (module quality tests).

IEC 61215-1:2016 lays down requirements for the design qualification and type approval of terrestrial photovoltaic (PV) modules suitable for long-term operation in general open-air climates, as defined in IEC 60721-2-1. This standard is intended to apply to all terrestrial flat plate module materials such as crystalline silicon module types as well as thin-film modules. The objective of this test sequence is to determine the electrical and thermal 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 in climates described in the scope. This edition of IEC 61215-1 includes the following significant technical changes with respect to the second edition of IEC 61215:2005: new standard series structure consistent with other IEC standards: Part 1 lists general requirements, Part 1-x specifics for each PV technology and Part 2 defines testing. All tests defined in Part 2 are MQTs (module quality tests).

IEC 61215-1:2016 is classified under the following ICS (International Classification for Standards) categories: 27.160 - Solar energy engineering. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 61215-1:2016 has the following relationships with other standards: It is inter standard links to IEC 61215:2005, IEC 61215-1:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase IEC 61215-1:2016 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.

Standards Content (Sample)


IEC 61215-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terrestrial photovoltaic (PV) modules – Design qualification and type approval –
Part 1: Test requirements
Modules photovoltaïques (PV) pour applications terrestres – Qualification de la
conception et homologation –
Partie 1: Exigences d'essai
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IEC 61215-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Terrestrial photovoltaic (PV) modules – Design qualification and type approval –

Part 1: Test requirements
Modules photovoltaïques (PV) pour applications terrestres – Qualification de la

conception et homologation –
Partie 1: Exigences d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-3206-4

– 2 – IEC 61215-1:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and object . 6
2 Normative references. 6
3 Terms, definitions and abbreviations . 7
4 Test samples . 8
5 Marking and documentation . 8
5.1 Name plate . 8
5.2 Documentation . 9
5.2.1 Minimum requirements . 9
5.2.2 Information to be given in the documentation . 9
5.2.3 Assembly instructions . 10
6 Testing . 10
7 Pass criteria . 11
7.1 General . 11
7.2 Power output and electric circuitry . 11
7.2.1 Verification of rated label values  Gate No. 1 . 11
7.2.2 Maximum power degradation during type approval testing  Gate No. 2 . 12
7.2.3 Electrical circuitry. 13
7.3 Visual defects . 13
7.4 Electrical safety . 13
8 Major visual defects . 13
9 Report . 14
10 Modifications . 15
11 Test flow and procedures . 15

Figure 1 – Full test flow for design qualification and type approval of photovoltaic
modules . 18

Table 1 – Summary of test levels . 16

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TERRESTRIAL PHOTOVOLTAIC (PV) MODULES –
DESIGN QUALIFICATION AND TYPE APPROVAL –

Part 1: Test requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61215-1 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
This first edition of IEC 61215-1 cancels and replaces the second edition of IEC 61215,
published in 2005; it constitutes a technical revision.
This edition of IEC 61215-1 includes the following significant technical changes with respect
to the second edition of IEC 61215:2005 and the second edition of IEC 61646:2008:
a) New standard series structure consistent with other IEC standards: Part 1 lists general
requirements, Part 1-x specifics for each PV technology and Part 2 defines testing. All
tests defined in Part 2 are MQTs (module quality tests).
b) Sampling procedure rewritten (Clause 4).
c) Marking requirements better defined for name plate and general documentation.

– 4 – IEC 61215-1:2016 © IEC 2016
d) Pass/fail criteria have been divided into two “gates”. Gate No. 1 verifies the initial
maximum power at STC with respect to name plate rating and Gate No. 2 defines the
power loss during accelerated aging testing.
e) Revised hot-spot endurance test (MQT 09).
f) Update of the other tests to be consistent with changes in IEC 61646.
g) Removal of the method for measuring temperature coefficients and reference to
IEC 60891.
h) Definition of NMOT as the nominal module operating temperature measured with the
module under maximum power conditions.
i) Rewriting of the standard using NMOT instead of NOCT and reference to future
IEC 61853-2 for the test procedure.
j) Rewriting of the robustness of termination test (MQT 14) to include evaluation of both
cables and junction boxes.
k) Stabilization of PV modules implemented. This replaces either light soaking procedure
from IEC 61646 or preconditioning from IEC 61215.
The text of this standard is based on the following documents:
FDIS Report on voting
82/1046/FDIS 82/1074/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all parts in the IEC 61215 series, published under the general title Terrestrial
photovoltaic (PV) modules – Design qualification and type approval, can be found on the
IEC website.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
Whereas Part 1 of this standard series describes requirements (both in general and specific
with respect to device technology), the sub-parts of Part 1 define technology variations and
Part 2 defines a set of test procedures necessary for design qualification and type approval.
The test procedures described in Part 2 are valid for all device technologies.

– 6 – IEC 61215-1:2016 © IEC 2016
TERRESTRIAL PHOTOVOLTAIC (PV) MODULES –
DESIGN QUALIFICATION AND TYPE APPROVAL –

Part 1: Test requirements
1 Scope and object
This part of IEC 61215 lays down IEC requirements for the design qualification and type
approval of terrestrial photovoltaic (PV) modules suitable for long-term operation in general
open-air climates, as defined in IEC 60721-2-1. This standard is intended to apply to all
terrestrial flat plate module materials such as crystalline silicon module types as well as thin-
film modules.
This standard 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 current, voltage and power levels expected at the design
concentration.
This standard does not address the particularities of PV modules with integrated electronics,
it may however be used as a basis for testing such PV modules.
The objective of this test sequence is to determine the electrical and thermal 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 in climates described in the
scope. The actual lifetime expectancy of modules so qualified will depend on their design,
their environment and the conditions under which they are operated.
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 60050 (all parts), International Electrotechnical Vocabulary (available at
http://www.electropedia.org)
IEC 60269-6, Low-voltage fuses – Part 6: Supplementary requirements for fuse-links for the
protection of solar photovoltaic energy systems
IEC 60891, Photovoltaic devices – Procedures for temperature and irradiance corrections to
measured I-V characteristics
IEC 60904-1, Photovoltaic devices – Part 1: Measurement of photovoltaic current-voltage
characteristics
IEC 60904-3, Photovoltaic devices – Part 3: Measurement principles for terrestrial
photovoltaic (PV) solar devices with reference spectral irradiance data
IEC 60904-10, Photovoltaic devices – Part 10: Methods of linearity measurement
IEC 61215-2, 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:
Irradiance and temperature performance measurements and power rating
IEC 61853-2, Photovoltaic (PV) module performance testing and energy rating – Part 2:
Spectral response, incidence angle, and module operating temperature measurements
IEC TS 62915, Photovoltaic (PV) modules – Retesting for type approval, design and safety
qualification
ISO/IEC 17025, General requirements for the competence of testing and calibration
laboratories
ISO/IEC Guide 98-3, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)
3 Terms, definitions and abbreviations
For the purposes of this document, the terms and definitions in IEC 60050 and IEC 61836
apply, as well as the following.
3.1
bins of power classes
power (typically maximum power) sorting criteria from the PV module manufacturer
3.2
tolerances
value range of electrical parameters on the label of the PV module as given by the
manufacturer
3.3
MQT
Module Quality Test
3.4
type approval
conformity test made on one or more items representative of the production
[SOURCE: IEC 60050-581:2008, 581-21-08 – Type test]
3.5
reproducibility
closeness of agreement between the results of measurements of the same value of a
quantity, when the individual measurements are made under different conditions of
measurement:
– principle of measurement,
– method of measurement,
– observer,
______________
To be published.
– 8 – IEC 61215-1:2016 © IEC 2016
– measuring instruments,
– reference standards,
– laboratory,
– under conditions of use of the instruments, different from those customarily used,
after intervals of time relatively long compared with the duration of a single measurement.
[≈ VIM 3.7]
Note 1 to entry: The concepts of "principle of measurement" and "method of measurement" are respectively
defined in VIM 2.3 and 2.4.
Note 2 to entry: The term "reproducibility" also applies to the instance where only certain of the above conditions
are taken into account, provided that these are stated.
[SOURCE: IEC 60050-311:2001, 311-06-07]
4 Test samples
The PV module samples shall have been manufactured from specified materials and
components in accordance with the relevant drawings and process sheets and have been
subjected to the manufacturer’s normal inspection, quality control and production acceptance
procedures. The PV modules shall be complete in every detail and shall be accompanied by
the manufacturer’s handling, mounting, and connection instructions. When the PV modules to
be tested are prototypes of a new design and not from production, this fact shall be noted in
the test report (see Clause 9).
The number of test samples required is derived from the applicable test sequences (see
Clause 11).
Special test samples may be required for tests such as the bypass diode test MQT 18 (see
IEC 61215-2).
For qualification of multiple bins of power classes within the boundaries given in future IEC
TS 62915 at least 2 modules each, from the lower end, median and higher end power class
shall be used for testing. If median power class does not exist the next higher class shall be
used.
If qualification of a single power class shall be extended to further bins of power classes
within the boundaries given in IEC TS 62915 at least 2 modules each, from the lower end,
median and higher end power class shall be used for label verification (see Gate No. 1 in
7.2.1).
It is advisable to provide additional spare samples meeting the same output power
requirements.
If applicable, the test samples shall be used to represent a group of products, or variations in
the materials, or production processes used to produce the modules. The additional samples
required for the test programme are then derived from IEC TS 62915.
5 Marking and documentation
5.1 Name plate
Each module shall include the following clear and indelible markings:
a) name, registered trade name or registered trade mark of manufacturer;
b) type or model number designation;

c) serial number (unless marked on other part of product);
d) date and place of manufacture; alternatively serial number allowing to trace the date and
place of manufacture;
e) maximum system voltage;
f) class of protection against electrical shock;
g) voltage at open-circuit or V including tolerances;
oc
h) current at short-circuit or I including tolerances;
sc
i) module maximum power or P including tolerances.
max
All electrical data shall be shown as relative to standard test conditions (1 000 W/m , 25 °C,
AM 1,5 according to IEC TS 61836).
International symbols shall be used where applicable.
Compliance of marking is checked by inspection and MQT 06.1.
5.2 Documentation
5.2.1 Minimum requirements
Modules shall be supplied with documentation describing the methods of electrical and
mechanical installation as well as the electrical ratings of the module. The documentation
shall state the class of protection against electrical shock under which the module has been
qualified and any specific limitations required for that class. The documentation shall assure
that installers and operators receive appropriate and sufficient documentation for safe
installation, use, and maintenance of the PV modules.
NOTE It is considered to be sufficient that one set of documentation is supplied with the module shipping unit.
5.2.2 Information to be given in the documentation
a) all information required under 5.1 e) to i);
b) reversed current rating in accordance to IEC 61730-2;
– overcurrent protection device type and rating are e.g. given in IEC 60269-6.
Overcurrent protection devices with a 1 h, 1,35 I overload rating, where I is the rated
n n
value of the overcurrent protection device, are recommended.
– maximum series/parallel module configurations is recommended;
c) manufacturer’s stated tolerance for V , I and maximum power output under standard
oc sc
test conditions;
d) temperature coefficient for voltage at open-circuit;
e) temperature coefficient for maximum power;
f) temperature coefficient for short-circuit current.
All electrical data mentioned above shall be shown as relative to standard test conditions
(1 000 W/m , 25 °C, AM 1,5 according to IEC TS 61836). Moreover the following parameters
shall be specified:
g) nominal module operating temperature (NMOT);
h) performance at NMOT (MQT 06.2);
i) performance at low irradiance (MQT 07).
International symbols shall be used where applicable.
Compliance is checked by inspection and MQT 04 through MQT 07.

– 10 – IEC 61215-1:2016 © IEC 2016
The electrical documentation shall include a detailed description of the electrical installation
wiring method to be used. This description shall include:
j) the minimum cable diameters for modules intended for field wiring;
k) any limitations on wiring methods and wire management that apply to the wiring
compartment or box;
l) the size, type, material and temperature rating of the conductors to be used;
m) type of terminals for field wiring;
n) specific PV connector model/types and manufacturer to which the module connectors shall
be mated;
o) the bonding method(s) to be used (if applicable); all provided or specified hardware shall
be identified in the documentation;
p) the type and ratings of bypass diode to be used (if applicable);
q) limitations to the mounting situation (e.g., slope, orientation, mounting means, cooling);
r) a statement indicating the fire rating(s) and the applied standard as well as the limitations
to that rating (e.g., installation slope, sub structure or other applicable installation
information);
s) a statement indicating the design load per each mechanical means for securing the
module as evaluated during the static mechanical load test according to MQT 16. At
discretion of the manufacturer the test load and/or the safety factor γ may be noted, too.
m
To allow for increased output of a module resulting from certain conditions of use, the
installation instructions shall include relevant parameters specified by manufacturer or the
following statement or the equivalent:
"Under normal conditions, a photovoltaic module is likely to experience conditions that
produce more current and/or voltage than reported at standard test conditions. Accordingly,
the values of I and V marked on this module should be multiplied by a factor of 1,25
SC OC
when determining component voltage ratings, conductor current ratings, and size of controls
connected to the PV output."
5.2.3 Assembly instructions
These shall be provided with a product shipped in subassemblies, and shall be detailed and
adequate to the degree required to facilitate complete and safe assembly of the product.
6 Testing
It is requested that the test laboratory uses a control module to be able to detect drifts in their
measurement results.
The modules shall be divided into groups and subjected to the qualification test sequences in
Figure 1. Qualification test sequences are to be carried out in the order specified. The MQT
designations in the boxes refer to the corresponding test definitions in Part 2 of this standard.
Technology specific test details are listed in the respective parts of this standard.
Intermediate measurements of maximum power (MQT 02) and insulation test (MQT 03) are
not necessary, but they may be used to track changes.
Any single tests executed independently of a test sequence, e.g., on special test samples for
MQT 09 and MQT 18, shall be preceded by the initial tests of MQT 01, MQT 02, MQT 03, and
MQT 15 as appropriate.
In carrying out the tests, the tester shall strictly observe the manufacturer's handling,
mounting, and connection instructions. Sequence A may be omitted if the module type has

been tested according to IEC 61853-1. In this case the relevant test results from IEC 61853-1
shall be stated or referenced in the final report.
Test conditions are summarized in Table 1. The test levels in Table 1 are the minimum levels
required for qualification. If the laboratory and the module manufacturer agree, the tests may
be performed with increased severities. In this case this shall be noted in the test report.
7 Pass criteria
7.1 General
If two or more modules fail to meet the following test criteria, the design shall be deemed not
to have met the qualification requirements. Should one module fail any test, two additional
modules meeting the requirements of Clause 4 shall be subjected to the entire series of tests
of the respective test sequence.
If one or both of these modules also fail, the design shall be deemed not to have met the
qualification requirements. If, however, both modules pass the test sequence, the design shall
be judged to have met the qualification requirements.
A module design shall be judged to have passed the qualification tests and therefore to be
approved according to this standard, if each test sample meets all of the following criteria.
7.2 Power output and electric circuitry
7.2.1 Verification of rated label values  Gate No. 1
All modules shall be stabilized following method MQT 19.1 from IEC 61215-2 (for technology
specific requirements see sub-parts of IEC 61215-1). After stabilization the modules shall be
measured in accordance with MQT 6.1 (P (Lab)). After the stabilization procedure all
max
modules shall be within the power rating of the name plate (P (NP)) including stated
max
measurement uncertainty m . Therefore, the following criterion shall be met:
P Verification:
max
Each individual module shall meet the following criterion:
   
m [%] t [%]
1 1
   
P (Lab)⋅ 1+ ≥ P (NP)⋅ 1–
max max
   
100 100
   
where
P (Lab) is the measured maximum STC power of each module in the stabilized state;
max
P (NP) is the maximum rated nameplate power of each module without tolerances;
max
m is the measurement uncertainty in % of laboratory for P (expanded
1 max
combined uncertainty (k=2), ISO/IEC Guide 98-3);
t is the manufacturer’s rated lower production tolerance in % for P
1 max.
For P (Lab), the following criterion shall apply:
max
 
m [%]
 
P (Lab)⋅ 1+ ≥ P (NP)
max max
 
 
where
– 12 – IEC 61215-1:2016 © IEC 2016
P (Lab) is the arithmetic average of the measured maximum STC power of the modules
max
in stabilized condition.
For multiple bins of power classes this formula has to be applied to each power class under
investigation.
V Verification:
OC
Each individual module shall meet the following criterion:
 m [%]  t [%]
2 2
   
V (Lab)⋅ 1+ ≤ V (NP)⋅ 1+
oc oc
   
100 100
   
where
V (Lab) is the measured maximum V of each module in the stabilized state;
OC OC
V (NP) is the maximum rated nameplate V of each module without tolerances;
OC OC
m is the measurement uncertainty in % of laboratory for V
2 OC;
t is the manufacturer’s rated upper production tolerance in % for V
2 OC.
I Verification:
SC
Each individual module shall meet the following criterion:
   
m [%] t [%]
3 3
   
I (Lab)⋅ 1+ ≤ I (NP)⋅ 1+
sc sc
   
100 100
   
where
(Lab) is the measured maximum I of each module in the stabilized state;
I
SC SC
I (NP) is the maximum rated nameplate I of each module without tolerances;
SC SC
m is the measurement uncertainty in % of laboratory for I
3 SC;
t is the manufacturer’s rated upper production tolerance in % for I
3 SC.
A systematic variation to either higher or lower output power will be stated in the final report.
7.2.2 Maximum power degradation during type approval testing  Gate No. 2
At the end of each test sequence or for sequence B after bypass diode test, the maximum
power output drop of each module P (Lab_Gate No. 2) shall be less than 5 %, referenced
max
to the module’s initial measured output power P (Lab_Gate No. 1). Each test sample shall
max
meet the following criterion:
r[%]
 
P (Lab _ GateNo.2)≥ 0,95× P (Lab _ GateNo.1)⋅1– 
max max
 
The reproducibility shall be determined for P and shall be used in the formula. The
max
reproducibility r shall be less than stated in the technology specific parts of this standard.
The reproducibility r is verified by comparing the control module(s) from sequence A after
initial stabilization (beginning of the test) and after final stabilization (end of tests from
sequence B to E). The second test shall be performed after completing all tests. The following
applies:
a) All modules from sequences B (after MQT 18.1), C, D and E are measured together with
one control module from Sequence A.
b) If a) cannot be used due to test flow (different completion time of sequence or customer
requests) restrictions the following applies:
For each sequence B (after MQT 18.1), C, D and E one control module from sequence A
shall be defined. The control module is stabilized and measured together with the modules
from the applicable sequence B (after MQT 18.1), C, D or E. For each determined value r
the requirement for r shall be fulfilled.
The reproducibility parameter r is not equal to the total measurement uncertainty of
(Lab_Gate No. 1) and
MQT 06.1. It is advisable that the same solar simulator is used for P
max
P (Lab_Gate No. 2).
max
If r exceeds the technology specific limit for the control module the laboratory needs to check
with its own internal reference module(s) whether the test equipment is faulty, or the module
under test is responsible for the poor reproducibility, or it is not in a stable state after applied
procedure MQT 19.1. If all checks confirm the measurement equipment is performing
correctly, this indicates that the control module has drifted by more than the technology
specific limit. In this case, proceed by using the technology specific limit for r.
7.2.3 Electrical circuitry
Samples are not permitted to exhibit an open-circuit during the tests.
7.3 Visual defects
There is no visual evidence of a major defect, as defined in Clause 8.
7.4 Electrical safety
a) The insulation test (MQT 03) requirements are met after the tests.
b) The wet leakage current test (MQT 15) requirements are met at the beginning and the end
of each sequence.
c) Specific requirements of the individual tests are met.
8 Major visual defects
The purpose of the visual inspection is to detect any visual defects that may cause a risk of
reliability loss, including power output.
In some instances more testing may be required to finally decide if major visual defects exist
or not.
For the purpose of design qualification and type approval the following observations are
considered to be major visual defects:
a) Broken, cracked, or torn external surfaces.
b) Bent or misaligned external surfaces, including superstrates, substrates, frames and
junction boxes to the extent that the operation of the PV module would be impaired.
c) Bubbles or delaminations forming a continuous path between electric circuit and the edge
of the module.
d) If the mechanical integrity depends on lamination or other means of adhesion, the sum of
the area of all bubbles shall not exceed 1 % of the total module area.
e) Evidence of any molten or burned encapsulant, backsheet, frontsheet, diode or active PV
component.
– 14 – IEC 61215-1:2016 © IEC 2016
f) Loss of mechanical integrity to the extent that the installation and operation of the module
would be impaired.
g) Cracked/broken cells which can remove more than 10 % of the cell’s photovoltaic active
area from the electrical circuit of the PV module.
h) Voids in, or visible corrosion of any of the layers of the active (live) circuitry of the module
extending over more than 10 % of any cell.
i) Broken interconnections, joints or terminals.
j) Any short-circuited live parts or exposed live electrical parts.
k) Module markings (label) are no longer attached or the information is unreadable.
9 Report
Following type approval, a report of the qualification tests, with measured performance
characteristics and details of any failures and re-tests, shall be prepared by the test agency in
accordance with ISO/IEC 17025. The report shall contain the detail specification for the
module. Each test report shall include at least the following information:
a) a title;
b) name and address of the test laboratory and location where the tests were carried out;
c) unique identification of the report and of each page;
d) name and address of client, where appropriate;
e) description and identification of the item tested;
f) characterization and condition of the test item;
g) date of receipt of test item and date(s) of test, where appropriate;
h) identification of test method used;
i) reference to sampling procedure, where relevant;
j) any deviations from, additions to, or exclusions from, the test method and any other
information relevant to specific tests, such as environmental conditions, or the irradiation
at which stability is reached;
dose in kWh/m
k) measurements, examinations and derived results supported by tables, graphs, sketches
and photographs as appropriate including:
– temperature coefficients of short-circuit current, open-circuit voltage and peak power,
– NMOT,
– power at NMOT, STC and low irradiance,
– the maximum shaded cell temperature observed during the hot-spot endurance test,
– spectrum of the lamp used for the UV preconditioning test,
– mounting method(s) utilized in the static mechanical load test and for measurement of
NMOT,
– the positive/negative test loads and the safety factor γ used in the static mechanical
m
load test,
– hail ball diameter and velocity used in the hail test,
– maximum power loss observed after all of the tests, and
l) any failures observed;
m) a representation of the markings of the module type including manufacturer’s power
tolerances;
n) a summary of results from all pass criteria defined in Clause 7 in absolute and relative
change. If tendencies to either higher or lower values are observed this has to be included
in the report. The used stabilization procedure (irradiance, temperature, time) needs to be
stated in detail;
o) a statement of the estimated uncertainty of the test results (where relevant); state the
reproducibility r from the control module that is used for Gate No. 2.
p) a signature and title, or equivalent identification of the person(s) accepting responsibility
for the content of the report, and the date of issue;
q) where relevant, a statement to the effect that the results relate only to the items tested;
r) a statement that the report shall not be reproduced except in full, without the written
approval of the laboratory.
10 Modifications
Changes in material selection, components and manufacturing process can impact the
qualification of the modified product. Material in direct contact with each other shall be tested
in all applicable combinations unless equality can be proven.
Detailed retesting requirements are defined in IEC TS 62915. The recommended test
sequences have been selected to identify adverse changes to the modified product.
The number of samples to be included in the retesting program and the pass/fail criteria are to
be taken from the relevant clauses/subclauses of this standard.
11 Test flow and procedures
For design qualification and type approval the following test flow and procedures apply.
Table 1 summarizes the different tests. The full test flow is given in Figure 1. A description of
the tests and test procedures is given in IEC 61215-2. Technology relevant differences will be
described in the respective technology specific part of this standard.

– 16 – IEC 61215-1:2016 © IEC 2016
Table 1 – Summary of test levels
Test IEC 61215:2005 Title Test conditions
or
IEC 61646:2008
MQT 01 10.1 Visual inspection See detailed inspection list in Clause 8
MQT 02 10.2 Maximum power See IEC 60904-1
determination
MQT 03 10.3 Insulation test For modules with a system voltage greater than 50 V d.c.,
dielectric withstand at 1 000 V d.c. + twice the maximum
systems voltage for 1 min, followed by insulation
resistance measurement at 500 V d.c. or maximum
systems voltage for 2 min.
For modules with a system voltage less than 50 V d.c., the
test voltages are 500 V d.c.
MQT 04 10.4 Measurement of See IEC 60891
a
temperature coefficients
See IEC 60904-10 for guidance (see note of Figure 1)
MQT 05 10.5 Measurement of NMOT See IEC future 61853-2
Module operating near maximum power point
Total solar irradiance: 800 W/m
Ambient temperature: 20 °C
Wind speed: 1 m/s
MQT 06 10.6 Performance at STC Cell temperature of 25 °C at STC and module temperature
(MQT 06.1) and NMOT at NMOT
2 2
(MQT 06.2)
Irradiance: 1 000 W/m and 800 W/m with IEC 60904-3
reference solar spectral irradiance distribution
Requirements see Clause 7
MQT 07 10.7 Performance at low Cell temperature: 25 °C
a
irradiance (see note of
Irradiance: 200 W/m with IEC 60904-3 reference
Figure 1)
solar spectral irradiance distribution
MQT 08 10.8 Outdoor exposure test 60 kWh/m total solar irradiation
MQT 09 10.9 Hot-spot endurance test Exposure to 1 000 W/m irradiance in worst-case hot-spot
condition as per the technology specific part and
IEC 61215-2
MQT 10 10.10 UV preconditioning 15 kWh/m total UV irradiation in the wavelength range
from 280 nm to 400 nm with 3 % to 10 % UV irradiance in
the wavelength range from 280 nm to 320 nm

MQT 11 10.11 Thermal cycling test 50 (Sequence C) or 200 (Sequence D) cycles from –40 °C
to +85 °C with current as per technology specific part up to
+80 °C
MQT 12 10.12 Humidity freeze test 10 cycles from +85 °C, 85 % RH to –40 °C
with circuitry continuity monitoring
MQT 13 10.13 Damp heat test 1 000 h at +85 °C, 85 % RH
MQT 14 10.14 Robustness of Test of junction box retention and cord anchorage.
termination
MQT 15 10.15 Wet leakage current Test voltage increase at a rate not exceeding 500 V/s to
test 500 V or the maximum system voltage for the module,
whichever is greater. Maintain the voltage at this level for
1 min.
MQT 16 10.16 Static mechanical load Three cycles of uniform load specified by the
test manufacturer, applied for 1 h to front and back s
...

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