Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings

This European Standard specifies requirements and a test method related to resistance to solar radiation for coated glass for use in buildings.
This test is aimed at evaluating if the exposure to solar radiation over an extended period of time produces any appreciable change in light transmittance and solar transmittance of the coated glass as well as a reduction of the infrared reflectance in the case of low emissivity coatings.
This European Standard applies to Class C and D coatings as defined in EN 1096-1 and used in insulating glass units.

Glas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und D

Diese Europäische Norm legt Anforderungen und ein Prüfverfahren für die Beständigkeit gegen Sonnenbestrahlung für Beschichtungen auf Glas für die Anwendung im Bauwesen fest.
Diese Prüfung hilft bei der Beurteilung, ob über einen ausgedehnten Zeitraum die Belastung durch Sonnenbestrahlung zu beträchtlichen Veränderungen des Licht- und Sonnenenergietransmissionsgrades des beschichteten Glases und bei Beschichtungen mit geringem Emissionsvermögen zu einer Verringerung des Infrarotreflexionsgrades führt.
Diese Europäische Norm ist, wie in EN 1096-1 festgelegt, auf Beschichtungen der Klassen C und D anwendbar.

Verre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et D

La présente Norme européenne spécifie les exigences et une méthode d’essai de la résistance au rayonnement solaire applicables au verre à couche employé dans la construction.
Cet essai a pour objectif d’évaluer si l’exposition prolongée du verre à couche au rayonnement solaire produit un changement sensible quelconque dans les facteurs de transmission lumineuse et de transmission de l’énergie solaire, ainsi qu’une réduction de la réflexion infrarouge dans le cas de couches à basse émissivité.
La présente Norme européenne s’applique aux couches de classes C et D telles que définies dans
l’EN 1096-1 et utilisées dans les vitrages isolants préfabriqués scellés.

Steklo v gradbeništvu - Steklo z nanosi - 3. del: Zahteve in preskusne metode za nanose razredov C in D

Ta evropski standard določa zahteve in preskusne metode v zvezi z odpornostjo na sončno sevanje za steklo z nanosi, ki se uporablja v gradbeništvu. S tem preskusom se določa, ali izpostavljenost sončnemu sevanju skozi daljše časovno obdobje povzroča občutne spremembe v svetlobni in solarni prehodnosti stekla z nanosi ter zmanjšanje infrardečega odboja v primeru nanosov nizke emisivnosti. Ta evropski standard se uporablja za nanose razredov C in D iz standarda EN 1096-1, ki se uporabljajo pri izolacijskih steklih.

General Information

Status
Withdrawn
Publication Date
29-Apr-2012
Withdrawal Date
30-Jul-2012
Current Stage
9060 - Closure of 2 Year Review Enquiry - Review Enquiry
Start Date
02-Sep-2017
Completion Date
02-Sep-2017

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v gradbeništvu - Steklo z nanosi - 3. del: Zahteve in preskusne metode za nanose razredov C in DGlas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und DVerre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et DGlass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 1096-3:2012SIST EN 1096-3:2012en,fr,de01-marec-2012SIST EN 1096-3:2012SLOVENSKI

STANDARDSIST EN 1096-3:20011DGRPHãþD
SIST EN 1096-3:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1096-3
January 2012 ICS 81.040.20 Supersedes EN 1096-3:2001English Version

Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings

Verre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et D

Glas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und D This European Standard was approved by CEN on 3 December 2011.

CEN 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 CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland , Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1096-3:2012: ESIST EN 1096-3:2012

EN 1096-3:2012 (E) 2 Contents Page Foreword ..............................................................................................................................................................31 Scope ......................................................................................................................................................42 Normative references ............................................................................................................................43 Terms and definitions ...........................................................................................................................44 Requirements .........................................................................................................................................45 Samples, test pieces and test specimens ...........................................................................................55.1 Test pieces .............................................................................................................................................55.1.1 Coated annealed glass ..........................................................................................................................55.1.2 Toughened or heat strengthened coated glass ..................................................................................55.1.3 Coated toughened or heat strengthened glass ..................................................................................55.2 Preparation of test specimens .............................................................................................................56 Initial evaluation of the test pieces ......................................................................................................57 Test methods for exposure to simulated solar radiation ..................................................................67.1 Radiation source ....................................................................................................................................67.2 Test conditions ......................................................................................................................................67.3 Reference glass piece ...........................................................................................................................77.4 Test procedure .......................................................................................................................................78 Final evaluation of exposed test pieces ..............................................................................................78.1 Visual inspection ...................................................................................................................................78.2 Spectrophotometric measurements ....................................................................................................78.2.1 General ....................................................................................................................................................78.2.2 Coated annealed glass ..........................................................................................................................88.2.3 Toughened or heat strengthened coated glass ..................................................................................89 Test report ..............................................................................................................................................8Annex A (normative)

Special procedures for thermally treated coated glass ..............................................9A.1 General ....................................................................................................................................................9A.2 Spectrophotometric measurements .................................................................................................9A.2.1 Samples and test pieces for spectrophotometric measurements ....................................................9A.2.2 Procedures .............................................................................................................................................9Annex B (normative)

Criteria to demonstrate equivalence of coatings ..................................................... 11B.1 General ................................................................................................................................................. 11B.2 Composition of coatings .................................................................................................................... 11B.3 Previous test reports .......................................................................................................................... 11B.4 Evaluation ............................................................................................................................................ 11B.5 Examples ............................................................................................................................................. 11Annex C (normative)

Example of two test apparatus which satisfy the exposure conditions given in 7.1 ..................................................................................................................................................... 13C.1 Plane arrangement of the test pieces ............................................................................................... 13C.2 Circular arrangement of the test pieces ........................................................................................... 15Annex D (informative)

Summary of test report ............................................................................................. 16Bibliography ..................................................................................................................................................... 18 SIST EN 1096-3:2012

EN 1096-3:2012 (E) 3 Foreword This document (EN 1096-3:2012) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2012, and conflicting national standards shall be withdrawn at the latest by July 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1096-3:2001. The main changes compared to the previous edition are:

 reference to the future EN 1096-5, Test method and classification for the Self-cleaning performances of coated glass surfaces;

 the introduction of a method to deal with toughenable / heat strengthenable and to be toughened / to be heat strengthened coated glass, see Annex A.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

SIST EN 1096-3:2012

EN 1096-3:2012 (E) 4 1 Scope This European Standard specifies requirements and a test method related to resistance to solar radiation for coated glass for use in buildings. This test is aimed at evaluating if the exposure to solar radiation over an extended period of time produces any appreciable change in light transmittance and solar transmittance of the coated glass as well as a reduction of the infrared reflectance in the case of low emissivity coatings. This European Standard applies to Class C and D coatings as defined in EN 1096-1 and used in insulating glass units. 2 Normative references The following referenced documents are indispensable for the application 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. EN 410, Glass in Building — Determination of luminous and solar characteristics of glazing EN 572-1, Glass in Building — Basic soda lime silicate glass products — Part 1: Definitions and general physical and mechanical properties EN 572-2, Glass in Building — Basic soda lime silicate glass products — Part 2: Float glass EN 1096-1:2012, Glass in Building — Coated glass — Part 1: Definitions and classification EN 1279 (all parts), Glass in Building — Insulating glass units EN 1279-2:2002, Glass in building — Insulating glass units — Part 2: Long term test method and requirements for moisture penetration EN 12150-1, Glass in Building — Thermally toughened soda lime silicate safety glass — Part 1: Definitions and description EN 12898, Glass in building — Determination of emissivity 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1096-1 apply. 4 Requirements The coated glass complying with this European Standard shall meet the requirements given in Table 1 as they relate to the characteristic resistance to solar radiation. SIST EN 1096-3:2012

EN 1096-3:2012 (E) 5 Table 1 — Requirements Test piece Visual inspection Spectrophotometric measurements Exposed test specimens No additional defects on the coating are seen as compared to the unexposed double glass test specimens No requirements Exposed single coated glass test piece No requirements The transmittance values at 550 nm and 900 nm shall differ from the corresponding values of the unexposed single coated glass sample by no more than +/- 0,03

For a glass claimed to have a low emissivity coating, the reflectance at 8 µm shall decrease by no more than 0,02. 5 Samples, test pieces and test specimens 5.1 Test pieces 5.1.1 Coated annealed glass A sample of 1000 mm x 500 mm is needed. Two square test pieces of minimum size 250 mm x 250 mm shall be cut from the sample. 5.1.2 Toughened or heat strengthened coated glass For the thermally treated coated glass, defined in EN 1096-1:2012, 3.1.8 to 3.1.11, as the test pieces cannot be cut from test samples, a special procedure has to be employed to obtain the test pieces (see annex A). 5.1.3 Coated toughened or heat strengthened glass Use coated annealed glass samples for testing this type of coated glass.

5.2 Preparation of test specimens Two insulating glass units shall be manufactured as test specimens. The insulating glass units shall consist of one of the test pieces, 12 mm airspace and a piece of 4 mm clear float glass (in compliance with EN 572-1 and EN 572-2). The dew point of the test specimens shall not be higher than - 25°C, when measured at

(23 ± 5) °C, according to EN 1279-2:2002, Annex A, or equivalent. The dew point is ensured when the insulating glass unit is manufactured in accordance with the EN 1279 series. The edge area of the test specimens shall be covered with a reflecting aluminium foil (40 ± 5) mm wide as a means of protection for the sealant components. 6 Initial evaluation of the test pieces The external surfaces of the test pieces shall be cleaned with a soft tissue using demineralised water, having a conductivity lower than 30 µS. Drying shall also be done with a soft tissue. If necessary this cleaning procedure can be repeated. SIST EN 1096-3:2012

EN 1096-3:2012 (E) 6 The test pieces shall be subjected to a visual inspection under an artificial sky according to EN 1096-1 at a distance of 600 mm. The examination shall be in both transmission and reflection. The test pieces shall be defect free, i.e. no visible scratches or pinholes shall be allowed. 7 Test methods for exposure to simulated solar radiation NOTE Annex B gives criteria to demonstrate equivalence of coatings, i.e. an indication of whether or not the coated glass needs to be tested. 7.1 Radiation source Radiation sources shall be used which emit radiation with a spectral distribution similar to the spectral solar global distribution as given in EN 410 and with percentages of UVB and UVA as given in Table 2. Such a spectral distribution can be obtained using different kinds of lamps (examples of test apparatus are given in Annex C). Table 2 — Spectral characteristics of the lamps used for the test Radiation Range of wavelength (nm) Percentage of total energy

(%) ultraviolet range UVB 280 to 315 1 to 4 ultraviolet range UVA 315 to 380 3 to 9 visible and infrared range > 380 balance

7.2 Test conditions The total irradiance level measured on the surface of the test pieces (surface facing the test lamps) shall be (900 ± 100) W/m². NOTE Calibrated pyranometers with characteristics as reported in ISO 9060 and with a spectral sensitivity in the 305 mm to 2800 mm range should be used for the determination of the total irradiance level. Using these detectors, the measured irradiance level on the surface of the test pieces should be (730 ± 80) W/m². The exposure time for the radiation test shall be:  (1000 ± 24) h in the case of test apparatus given in C.1;  (2000 ± 24) h in the case of test apparatus given in C.2. The test specimen shall be placed with the coating orientated towards the radiation source. When tested, the coating shall be on surface 3. However, when the coating is only to be used on surface 2, then it shall be tested on surface 2. Figures C.1 a) (planar array) or C.1 b) (circular array) show the arrangement of the test specimens

...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v gradbeništvu - Steklo z nanosi - 3. del: Zahteve in preskusne metode za nanose razredov C in DGlas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und DVerre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et DGlass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:FprEN 1096-3kSIST FprEN 1096-3:2011en,fr,de01-september-2011kSIST FprEN 1096-3:2011SLOVENSKI

STANDARD
kSIST FprEN 1096-3:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 1096-3
June 2011 ICS 81.040.20 Will supersede EN 1096-3:2001English Version

Glass in building - Coated glass -Part 3: Requirements and test methods for class C and D coatings

Verre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et D

Glas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und D This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 129.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 1096-3:2011: EkSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 2 Contents Page Foreword ..............................................................................................................................................................31 Scope ......................................................................................................................................................42 Normative references ............................................................................................................................43 Terms and definitions ...........................................................................................................................44 Requirements .........................................................................................................................................45 Samples, test pieces and test specimens ...........................................................................................55.1 Test pieces .............................................................................................................................................55.1.1 Coated annealed glass ..........................................................................................................................55.1.2 Toughened or heat strengthened coated glass ..................................................................................55.1.3 Coated toughened or heat strengthened glass ..................................................................................55.2 Preparation of test specimens .............................................................................................................56 Initial evaluation of the test pieces ......................................................................................................57 Test methods for exposure to simulated solar radiation ..................................................................67.1 Radiation source ....................................................................................................................................67.2 Test conditions ......................................................................................................................................67.3 Reference glass piece ...........................................................................................................................77.4 Test procedure .......................................................................................................................................78 Final evaluation of exposed test pieces ..............................................................................................78.1 Visual inspection ...................................................................................................................................78.2 Spectrophotometric measurements ....................................................................................................78.2.1 Coated annealed glass ..........................................................................................................................78.2.2 Toughened or heat strengthened coated glass ..................................................................................89 Test report ..............................................................................................................................................8Annex A (normative)

Special procedures for thermally treated coated glass ..............................................9A.1 General ....................................................................................................................................................9A.2 Samples and test pieces .....................................................................................................................9A.3 Spectrophotometric measurements .................................................................................................9A.3.1 Introduction ............................................................................................................................................9A.3.2 Procedures .............................................................................................................................................9Annex B (normative)

Criteria to demonstrate equivalence of coatings ..................................................... 11B.1 Preliminary .......................................................................................................................................... 11B.2 Composition of coatings .................................................................................................................... 11B.3 Previous test reports .......................................................................................................................... 11B.4 Evaluation ............................................................................................................................................ 11B.5 Examples ............................................................................................................................................. 11Annex C (normative)

Example of two test apparatus which satisfy the exposure conditions given in 7.1 ..................................................................................................................................................... 13C.1 Plane arrangement of the test pieces ............................................................................................... 13C.2 Circular arrangement of the test pieces ........................................................................................... 15Annex D (informative)

Summary of test report ............................................................................................. 16Bibliography ..................................................................................................................................................... 18 kSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 3 Foreword This document (FprEN 1096-3:2011) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the secretariat of which is held by NBN. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 1096-3:2001. The main changes compared to the previous edition are:

 reference to the future EN 1096-5, Test method and classification for the Self-cleaning performances of coated glass surfaces;

 the introduction of a method to deal with toughenable / heat strengthenable and to be toughened / to be heat strengthened coated glass, see Annex A.

kSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 4 1 Scope This European Standard specifies requirements and a test method related to resistance to solar radiation for coated glass for use in buildings. This test is aimed at evaluating if the exposure to solar radiation over an extended period of time produces any appreciable change in light transmittance and solar transmittance of the coated glass as well as a reduction of the infrared reflectance in the case of low emissivity coatings. This European Standard applies to Class C and D coatings as defined in EN 1096-1 and used in insulating glass units. 2 Normative references The following referenced documents are indispensable for the application 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. EN 410, Glass in Building — Determination of luminous and solar characteristics of glazing EN 572-1, Glass in Building — Basic soda lime silicate glass products — Part 1: Definitions and general physical and mechanical properties EN 572-2, Glass in Building — Basic soda lime silicate glass products — Part 2: Float glass EN 1096-1, Glass in Building — Coated glass — Part 1: Definitions and classification EN 1096-2, Glass in building — Coated glass — Part 2: Requirements and test methods for class A, B and S coatings EN 1279 (all parts), Glass in Building — Insulating glass units EN 12150-1, Glass in Building — Thermally toughened soda lime silicate safety glass — Part 1: Definitions and description EN 12898, Glass in building — Determination of emissivity 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1096-1 and EN 1096-2 apply. 4 Requirements The coated glass complying with this European Standard shall meet the requirements given in Table 1 as they relate to the characteristic resistance to solar radiation. kSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 5 Table 1 — Requirements Test piece Visual inspection Spectrophotometric measurements Exposed test specimens No additional defects on the coating are seen as compared to the unexposed double glass test specimens No requirements Exposed single coated glass test piece No requirements The transmittance values at 550 nm and 900 nm shall differ from the corresponding values of the unexposed single coated glass sample by no more than +/- 0,03

For a glass claimed to have a low emissivity coating, the reflectance at 8 µm shall decrease by no more than 0,02. 5 Samples, test pieces and test specimens 5.1 Test pieces 5.1.1 Coated annealed glass A sample of 1000 mm x 500 mm is needed. Two square test pieces of minimum size 250 mm x 250 mm shall be cut from the sample. 5.1.2 Toughened or heat strengthened coated glass For the thermally treated coated glass, defined in EN 1096-2, 3.3, as the test pieces cannot be cut from test samples, a special procedure has to be employed to obtain the test pieces (see annex A). 5.1.3 Coated toughened or heat strengthened glass Use coated annealed glass samples for testing this type of coated glass.

5.2 Preparation of test specimens Two insulating glass units shall be manufactured as test specimens. The insulating glass units shall consist of one of the test pieces, 12 mm airspace and a piece of 4 mm clear float glass (in compliance with EN 572-1 and EN 572-2). The dew point of the test specimens shall not be higher than - 25°C, when measured at

(23 ± 5) °C, according to EN 1279-2, Annex A, or equivalent. The dew point is ensured when the insulating glass unit is manufactured in accordance with the EN 1279 series. The edge area of the test specimens shall be covered with a reflecting aluminium foil (40 ± 5) mm wide as a means of protection for the sealant components. 6 Initial evaluation of the test pieces The external surfaces of the test pieces shall be cleaned with a soft tissue using demineralised water, having a conductivity lower than 30 µS. Drying shall also be done with a soft tissue. If necessary this cleaning procedure can be repeated. kSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 6 The test pieces shall be subjected to a visual inspection under an artificial sky according to EN 1096-1 at a distance of 600 mm. The examination shall be in both transmission and reflection. The test pieces shall be defect free, i.e. no visible scratches or pinholes shall be allowed. 7 Test methods for exposure to simulated solar radiation Annex B gives criteria to demonstrate equivalence of coatings, i.e. an indication of whether or not the coated glass needs to be tested. 7.1 Radiation source Radiation sources shall be used which emit radiation with a spectral distribution similar to the spectral solar global distribution as given in EN 410 and with percentages of UVB and UVA as given in Table 2. Such a spectral distribution can be obtained using different kinds of lamps (examples of test apparatus are given in Annex C). Table 2 — Spectral characteristics of the lamps used for the test Radiation Range of wavelength (nm) Percentage of total energy

(%) ultraviolet range UVB 280 to 315 1 to 4 ultraviolet range UVA 315 to 380 3 to 9 visible and infrared range > 380 balance

7.2 Test conditions The total irradiance level measured on the surface of the test pieces (surface facing the test lamps) shall be (900 ± 100) W/m². NOTE Calibrated pyranometers with characteristics as reported in ISO 9060 and with a spectral sensitivity in the 305 mm to 2800 mm range should be used for the determination of the total irradiance level. Using these detectors, the measured irradiance level on the surface of the test pieces should be (730 ± 80) W/m². The exposure time for the radiation test shall be:  (1000 ± 24) h in the case of test apparatus given in C.1;  (2000 ± 24) h in the case of test apparatus given in C.2. The test specimen shall be placed with the coating orientated towards the radiation source. When tested, the coating shall be on surface 3. However, when the coating is only to be used on surface 2, then it shall be tested on surface 2. Figures C.1 a) (planar array) or C.1 b) (circular array) show the arrangement of the test specimens and the reference glass piece. The reference glass piece has a thermocouple placed on its surface facing the test lamps. The temperature of the reference glass piece shall be (56 ± 3) °C. kSIST FprEN 1096-3:2011

FprEN 1096-3:2011 (E) 7 7.3 Reference glass piece An enamelled thermally toughened soda lime silicate safety glass, according to EN 12150-1, shall be used as a reference glass piece. It will be manufactured from of a piece of float glass, up to 10 mm thickness, according to EN 5

...

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