SIST EN 62805-1:2018

Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

This part of IEC 62805 specifies a method for measurement and calculation of the total haze
and the spectral distribution of haze of glass used in photovoltaic (PV) modules.
This document is applicable to glass used in PV modules, including transparent conductive
oxide coated (TCO) glass and other kinds of glass used in PV modules.

Verfahren für die Messung von photovoltaischem (PV) Glas - Teil 1: Messung der gesamten Trübung und der spektralen Verteilung der Trübung

Méthode de mesure du verre photovoltaïque (PV) - Partie 1: Mesurage de la brume totale et de la répartition spectrale de la brume

L'IEC 62805-1:2017 spécifie une méthode de mesure et de calcul de la brume totale et de la répartition spectrale de la brume du verre utilisé dans les modules photovoltaïques (PV). Le présent document est applicable au verre utilisé dans les modules PV, y compris le verre revêtu d’oxyde conducteur transparent (TCO) et les autres types de verres utilisés dans les modules PV.

Metode za merjenje fotonapetostnega (PV) stekla - 1. del: Merjenje celotne zamegljenosti in spektralne porazdelitve zamegljenosti

Ta del standarda IEC 62805 določa metodo za merjenje in izračun celotne zamegljenosti in spektralne porazdelitve zamegljenosti stekla, ki se uporabljajo za fotonapetostne (PV) module.
Ta dokument se uporablja za steklo, ki se uporablja za fotonapetostne module, vključno s steklom s plastjo prevodnega in optično prosojnega oksida (TCO) ter drugimi vrstami stekla, ki se uporabljajo za fotonapetostne module.

General Information

• Status: Published
• Publication Date: 10-Dec-2017
• ICS: 27.160 - Solar energy engineering
• Technical Committee: PVS - Solar photovoltaic energy systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-Nov-2017
• Due Date: 19-Jan-2018
• Completion Date: 11-Dec-2017
• Ref Project: EN 62805-1:2017 - Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62805-1:2018
01-januar-2018
Metode za merjenje fotonapetostnega (PV) stekla - 1. del: Merjenje celotne
zamegljenosti in spektralne porazdelitve zamegljenosti
Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and
spectral distribution of haze
Ta slovenski standard je istoveten z: EN 62805-1:2017
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
SIST EN 62805-1:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62805-1:2018

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SIST EN 62805-1:2018


EUROPEAN STANDARD EN 62805-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2017
ICS 27.160

English Version
Method for measuring photovoltaic (PV) glass - Part 1:
Measurement of total haze and spectral distribution of haze
(IEC 62805-1:2017)
Méthode de mesure du verre photovoltaïque (PV) - Partie 1: Verfahren für die Messung von photovoltaischem (PV) Glas
Mesurage de la brume totale et de la répartition spectrale - Teil 1: Messung der gesamten Trübung und der
de la brume spektralen Verteilung der Trübung
(IEC 62805-1:2017) (IEC 62805-1:2017)
This European Standard was approved by CENELEC on 2017-09-21. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62805-1:2017 E

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SIST EN 62805-1:2018
EN 62805-1:2017
European foreword
The text of document 82/1297/FDIS, future edition 1 of IEC 62805-1, prepared by IEC/TC 82 “Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 62805-1:2017.

The following dates are fixed:
(dop) 2018-06-21
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-09-21
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62805-1:2017 was approved by CENELEC as a European
Standard without any modification.
2

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SIST EN 62805-1:2018
EN 62805-1:2017

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60904-3 2016 Photovoltaic devices - Part 3: EN 60904-3 2016
Measurement principles for terrestrial
photovoltaic (PV) solar devices with
reference spectral irradiance data
IEC/TS 61836 -  Solar photovoltaic energy systems - - -
Terms, definitions and symbols

3

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SIST EN 62805-1:2018

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SIST EN 62805-1:2018



IEC 62805-1

®


Edition 1.0 2017-08




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Method for measuring photovoltaic (PV) glass –

Part 1: Measurement of total haze and spectral distribution of haze




Méthode de mesure du verre photovoltaïque (PV) –

Partie 1: Mesurage de la brume totale et de la répartition spectrale de la brume















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 27.160 ISBN 978-2-8322-4720-4



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62805-1:2018
– 2 – IEC 62805-1:2017  IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Apparatus . 7
4.1 General . 7
4.2 Performance of test instrument . 8
5 Test specimens . 9
6 Conditioning . 9
7 Procedure . 9
7.1 General . 9
7.2 Measurements of spectral distribution of haze . 9
8 Calculation of results . 12
8.1 Spectral distribution of haze . 12
8.2 Total haze . 12
9 Test report . 12
Bibliography . 14

Figure 1 – Schematic of the integrating sphere . 8
Figure 2 – Schematic of sample position for haze measurement . 11

Table 1 – Reading procedure . 10

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SIST EN 62805-1:2018
IEC 62805-1:2017  IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

METHOD FOR MEASURING PHOTOVOLTAIC (PV) GLASS –

Part 1: Measurement of total haze and spectral distribution of haze

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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 62805-1 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
The text of this standard is based on the following documents:
FDIS Report on voting
82/1297/FDIS 82/1321/RVD

Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62805, published under the general title Method for measuring
photovoltaic (PV) glass, can be found on the IEC website.

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SIST EN 62805-1:2018
– 4 – IEC 62805-1:2017  IEC 2017
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 62805-1:2018
IEC 62805-1:2017  IEC 2017 – 5 –
INTRODUCTION
This document differentiates from the other standards related to haze measurement as
follows:
• the scope of this document is restricted to total haze and spectral distribution of haze
measurement for PV glass,
• the wavelength range of measurement is different from the visible wavelength range of the
other haze test method. In this standard, the wavelength range is typically from 280 nm to
1 250 nm which is related to the spectral response of common solar cells,
• the spectral haze at each wavelength λ is specified in this standard, while the haze
integrated over the visible wavelength range 380 nm to 830 nm is always obtained in the
other haze test standards.
This part of IEC 62805 establishes IEC requirements for measuring haze and for calculating
the total haze of the glass used in photovoltaic modules, especially for the transparent
conductive oxide coated (TCO) glass used as substrates for thin-film solar cells.
Thin-film photovoltaic (PV) technology has experienced rapid growth and achieved significant
technological advances in recent years due to its advantage over other technologies,
including low consumption of raw materials, better performance under high temperatures,
reduced sensitivity to overheating, and easier building integration. For the different kinds of
thin-film technology used today, such as amorphous silicon (a-Si), amorphous
silicon/microcrystalline silicon (a-Si/μ-Si) tandem, cadmium telluride (CdTe), and perovskite
thin-film solar cells, TCO glass is used as the substrate. For silicon-based thin-film solar cells,
textured TCO substrates are used to introduce surface texture and light scattering within the
solar cell structures in order to enhance the light absorption. Such TCO glass with specific
surface morphology and light scattering level can enhance the light absorption in specific
wavelength ranges. Therefore, the haze values including total haze and spectral distribution
of haze are important properties of TCO glass and thus to the solar cell efficiency.
...