{"id":244628,"date":"2024-10-19T16:04:30","date_gmt":"2024-10-19T16:04:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-62788-1-62017\/"},"modified":"2024-10-25T11:03:54","modified_gmt":"2024-10-25T11:03:54","slug":"bs-en-62788-1-62017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-62788-1-62017\/","title":{"rendered":"BS EN 62788-1-6:2017"},"content":{"rendered":"
IEC 62788-1-6:2017 defines the terminology, test equipment, test environment, specimen preparation, test procedures, and test report for measuring the degree of cure of Ethylene-Vinyl Acetate (EVA) encapsulation sheet used in photovoltaic (PV) modules. The differential scanning calorimetry (both residual enthalpy and melt\/freeze protocols) and gel content methods are included herein. This procedure can be used by material- or module-manufacturers to verify that the cross-linking additive is present and is active. The procedure can also be used to verify the module manufacturing (lamination) process for the purposes of quality- and process-control. The procedure can also be used to assess the uniformity of the EVA formulation within a roll as well as to compare variation of the EVA formulation from roll to roll.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 4 Principle <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 5 DSC secondary method 5.1 Instrument and equipment for the secondary method 5.1.1 General 5.1.2 Electronic balance 5.1.3 Differential scanning calorimeter 5.1.4 Instrument calibration <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 5.2 Specimen preparation for the secondary method 5.2.1 Sampling and storage 5.2.2 Preparation procedures 5.3 Test requirements for the secondary method 5.3.1 Environment requirements <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 5.3.2 Parameter settings (residual enthalpy method) 5.3.3 Parameter settings (melt\/freeze method) 5.3.4 Parameter settings (combined enthalpy and melt\/freeze method) <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 5.4 Test procedure for the secondary method 5.5 Calculation and expression of the results for the secondary method 5.5.1 Enthalpy method <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 5.5.2 Melt\/freeze method Figures Figure 1 \u2013 Example result for the DSC residual enthalpy method <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | Figure 2 \u2013 Location of temperatures and temperature rangesused in the melt\/freeze DSC method <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | Figure 3 \u2013 Example of the temperature bounds appliedfor an automated software integration algorithm Table 1 \u2013 Summary of the results for the examplemeasurements shown in Figure 2 <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | 5.6 Uncertainty of measurements for the secondary method 6 The primary method 6.1 Principle for the primary method Figure 4 \u2013 Representation of the measurement profile for an EVA test specimen <\/td>\n<\/tr>\n | ||||||
22<\/td>\n | 6.2 Instrument and equipment for the primary method 6.2.1 Electronic balance 6.2.2 Soxhlet extractor 6.2.3 Thimble 6.2.4 Heating apparatus <\/td>\n<\/tr>\n | ||||||
23<\/td>\n | 6.2.5 Handling apparatus 6.2.6 Solvent 6.3 Specimen preparation for the primary method 6.3.1 Sampling and storage 6.3.2 Preparation procedures <\/td>\n<\/tr>\n | ||||||
24<\/td>\n | 6.4 Test requirements for the primary method \u2013 Environment requirements 6.5 Test procedure for the primary method 6.6 Calculation and expression of the results for the primary method 7 Test report <\/td>\n<\/tr>\n | ||||||
26<\/td>\n | Annex\u00a0A (informative)Limitations of the primary and secondary measurement methods <\/td>\n<\/tr>\n | ||||||
28<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Measurement procedures for materials used in photovoltaic modules – Encapsulants. Test methods for determining the degree of cure in Ethylene-Vinyl Acetate<\/b><\/p>\n |