ISO 18543:2017 pdf download

ISO 18543:2017 pdf download.Glass in building — Electrochromic glazings — Accelerated ageing test and requirements
1 Scope
This document specifies the accelerated ageing test and requirements for electrochromic (EC) glazings. The test method described in this document is only applicable to chromogenic glazings that can be switched using an electrical stimulus from high to low transmission states and vice versa. This test method is not applicable to other chromogenic glazings such as photochromic and thermochromic glazings, which do not respond to electrical stimulus. This test method is applicable to any electrochromic glazing fabricated for vision glass (e.g. insulating glass unit, laminated glass) for use in buildings such as doors, windows, skylights and exterior wall systems and glazing exposed to solar radiation. The layers used for constructing the EC glazing and for electrochromically changing the optical properties can be inorganic or organic materials.
2 Normative references
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.
ISO 9050:2003, Glass in building — Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
ISO 12543 (all parts), Glass in building — Laminated glass and laminated safety glass
ISO 20492 (all parts), Glass in buildings — Insulating glass
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
NOTE 1 At longer wavelengths, the xenon arc emission is at variance with the air mass 1,5 solar spectrum because the intensities relative to those in the UV/visible region are higher than in solar radiation. However, this part of the spectrum does not cause photolytic-induced degradation. Figure 2 shows an example top-view of the essential features of the test chamber, including the layout of the EC glazings on a test plane, the location of the xenon arc lamps above the test plane and the necessary connecting cables from the EC glazings to the computer-controlled cycling and data acquisition system. Chamber dimension shall be large enough to accommodate all specimens. The intensity of the irradiance at the specimens shall be adjustable to obtain the desired light intensity and lateral uniformity within the guidelines of this document. NOTE 2 This can be achieved by adjusting the distance between the specimens and the lamps.