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BS EN IEC 60216-3:2021 Electrical insulating materials. Thermal endurance properties - Instructions for calculating thermal endurance characteristics, 2021
- undefined
- Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols and abbreviated terms
- 4 Principles of calculations [Go to Page]
- 4.1 General principles
- 4.2 Preliminary calculations [Go to Page]
- 4.2.1 General
- 4.2.2 Non-destructive tests
- 4.2.3 Proof tests
- 4.2.4 Destructive tests
- 4.3 Variance calculations
- 4.4 Statistical tests
- 4.5 Results
- 5 Requirements and recommendations for valid calculations [Go to Page]
- 5.1 Requirements for experimental data [Go to Page]
- 5.1.1 General
- 5.1.2 Non-destructive tests
- 5.1.3 Proof tests
- 5.1.4 Destructive tests
- 5.2 Precision of calculations
- 6 Calculation procedures [Go to Page]
- 6.1 Preliminary calculations [Go to Page]
- 6.1.1 Temperatures and x-values
- 6.1.2 Non-destructive tests
- 6.1.3 Proof tests
- 6.1.4 Destructive tests
- Figures [Go to Page]
- Figure 1 – Example of groups selection [Go to Page]
- 6.1.5 Incomplete data
- 6.2 Main calculations [Go to Page]
- 6.2.1 Calculation of group means and variances
- 6.2.2 General means and variances
- 6.2.3 Regression calculations
- 6.3 Statistical tests [Go to Page]
- 6.3.1 Variance equality test
- 6.3.2 Linearity test (F-test)
- 6.3.3 Confidence limits of X and Y estimates
- 6.4 Thermal endurance graph
- 7 Calculation and requirements for results [Go to Page]
- 7.1 Calculation of thermal endurance characteristics
- 7.2 Summary of statistical tests and reporting
- 7.3 Reporting of results
- 8 Test report
- Annexes [Go to Page]
- Annex A (normative) Decision flow chart
- Figure A.1 – Decision flow chart
- Annex B (normative) Decision table
- Tables [Go to Page]
- Table B.1 – Decisions and actions according to tests
- Annex C (informative) Statistical tables
- Table C.1 – Coefficients for censored data calculations
- Table C.2 – Fractiles of the F-distribution, F(0,95, fn, fd)
- Table C.3 – Fractiles of the F-distribution, F(0,995, fn, fd)
- Table C.4 – Fractiles of the t-distribution, t0,95
- Table C.5 – Fractiles of the χ2-distribution
- Annex D (informative) Worked examples
- Table D.1 – Worked example 1 – Censored data (proof tests: file CENEX3.DTA)
- Table D.2 – Worked example 2 – Complete data (non-destructive tests: file TEST2.DTA)
- Figure D.1 – Thermal endurance graph
- Table D.3 – Worked example 3 – Destructive tests
- Figure D.2 – Example 3: Property-time graph
- Table D.4 – Worked example 3 – Selection of groups
- Annex E (informative) Computer program [Go to Page]
- E.1 General [Go to Page]
- E.1.1 Overview
- E.1.2 Convenience program execution
- Figure E.1 – Shortcut property dialog for program launch [Go to Page]
- E.2 Structure of data files used by the program [Go to Page]
- E.2.1 Text file formats
- Table E.1 – Non-destructive test data
- Table E.2 – Destructive test data [Go to Page]
- [Go to Page]
- E.2.2 Office Open XML formats
- Table E.3 – Non-destructive test data
- Table E.4 – Destructive test data [Go to Page]
- E.3 Data files for computer program
- E.4 Output files and graph
- Figure E.2 – Thermal endurance graph of example N3
- Bibliography [Go to Page]
