This document specifies the safety requirements for flexible polymeric frontsheet and backsheet constructions, which are intended for use as relied upon insulation in photovoltaic (PV) modules. In accordance with the corresponding safety requirements in IEC 61730-1 on the PV module level, the test methods and specifications in this document define the specific requirements of the polymeric frontsheet or backsheet constructions on the component level and cover mechanical, electrical, visual and thermal characterization in an unexposed state and\/or after ageing. A polymeric frontsheet and backsheet must pass the requirements in this standard for a PV module to pass the design requirements of IEC 61730-1. Compliance with the safety requirements for a frontsheet or backsheet on the component level does not replace the need for a safety qualification of the complete PV module, in which the frontsheet or backsheet is integrated. The appropriate requirements for testing and qualification on the PV module level are defined in IEC 61730-1 (or IEC TS 62915 in case of retesting) and IEC 61215-1, with test methods provided by IEC 61730-2 and IEC 61215-2, respectively.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 3 Terms, definitions and abbreviated terms 3.1 General terms and definitions 3.2 Sheet types and orientations <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 3.3 Electrical insulation <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 3.4 Temperatures 3.5 Tensile properties <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4 Designation and ratings 5 Requirements 5.1 General 5.1.1 Overview <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.1.2 Single-layer constructions Figures Figure 1 \u2013 Schematic diagrams of typical constructions of front- or backsheets <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.1.3 Multilayer constructions 5.2 Insulation coordination 5.2.1 General 5.2.2 Breakdown voltage requirement for complete front- or backsheet <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.2.3 Breakdown voltage requirements for individual layers 5.2.4 Creepage distance requirements Tables Table 1 \u2013 Minimum breakdown voltage requirements for basic and double\/reinforced insulation before and after accelerated aging <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 5.2.5 Distance through insulation requirements 5.3 Thermal endurance Table 2 \u2013 Minimum distance through insulation requirements <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 5.4 Mechanical requirements 5.5 Model and variant designation 6 Evaluation of test results 6.1 General <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.2 Visual inspection \u2013 FBST 01 6.2.1 General 6.2.2 Reporting 6.3 Tensile properties \u2013 FBST 02 6.3.1 General 6.3.2 Reporting <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.4 Breakdown voltage \u2013 FBST 03 6.4.1 General <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.4.2 Analysis 6.4.3 Reporting Figure 2 \u2013 Examples of calculations for determinationof DTI ratio and adjusted breakdown voltage <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 6.5 Distance through insulation \u2013 FBST 04 6.5.1 General 6.5.2 Analysis <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 6.5.3 Reporting 6.6 Material group \u2013 FBST 05 6.6.1 General Figure 3 \u2013 Determining distance through insulation from laminationprotrusion test as a function of temperature rating <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 6.6.2 Reporting 6.7 Thermal endurance \u2013 FBST 06 6.7.1 General 6.7.2 Reporting 6.8 Accelerated ageing tests 6.8.1 Damp heat \u2013 FBST 07 6.8.2 UV weathering \u2013 FBST 08 Figure 4 \u2013 Schematic of lamination protrusion test result for determiningwhich surfaces will be evaluated for minimum creepage distancein the IEC 61730 module design review <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 6.8.3 Reporting Table 3 \u2013 UV exposure conditions <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 6.9 Overview tables Table 4 \u2013 Evaluations and requirements overview for individual layers Table 5 \u2013 Evaluations and requirements overview for complete front- and\/or backsheets <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 7 Evaluation report 7.1 Report 8 Documentation and testing for similar materials 8.1 General <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 8.2 Alternate constituent layers 8.3 Thickness variants 8.4 Color variants <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 8.5 Reporting for similar materials with different color or thickness <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Annex A (informative)Chemical analytical material identification A.1 General A.2 Examples of fingerprint techniques <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Measurement procedures for materials used in photovoltaic modules – Polymeric materials. Frontsheet and backsheet. Safety requirements<\/b><\/p>\n |