BS 5691-1:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Guide for the determination of thermal endurance properties of electrical insulating materials General guidelines for ageing procedures and evaluation of test results
Hardcopy , PDF
06-03-2002
English
15-11-1995
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Committees responsible
National foreword
Foreword
Introduction
Section one. General
1 Scope
2 General considerations
3 Principles of evaluation and difinitions
4 Selection of test procedures - General guidelines
Section two. Experimental procedures
5 Selection of end-points
6 Preparation of test specimens
7 Establishment of initial property value and number
of test specimens
8 Exposure temperatures and times
9 Ageing ovens
10 Environmental conditioning
11 Procedure
Section three. Evaluation
12 Analysis of test results and determination of thermal
endurance characteristics
13 Treatment and presentation of test data which fail to
satisfy the statistical requirements
14 Test report
Appendices
A Notes on mechanisms of thermal degradation
B The halving interval
C Dispersion and non-linearity
D The thermal endurance profile (TEP)
Table
I Suggested exposure temperatures and times
Figures
1 Determination of the time to reach the end-point
criterion at each temperature. Property variation
2 Thermal endurance graph. T1: Temperature index. HIC:
Halving interval
3 Thermal endurance graph. RTI: Relative temperature
index. HIC (A): Halving interval
Annex
ZA (normative) Other international publications quoted
in this standard with the references of the relevant
European publications
Gives principles of test procedures to evaluate the thermal endurance of insulating materials and combinations of such materials. Shows the basic analysis to derive the temperature index and halving interval from test results.
| Committee |
GEL/15
|
| DevelopmentNote |
SUPERSEDES BS 5691 PART 1 1979
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| HD 611.1 : 200S1 | Identical |
| IEC 60216-1:2013 | Identical |
| IEC 60212:2010 | Standard conditions for use prior to and during the testing of solid electrical insulating materials |
| IEC 60216-4-1:2006 | Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens |
| IEC 60493-1:2011 | Guide for the statistical analysis of ageing test data - Part 1: Methods based on mean values of normally distributed test results |
| IEC 60611:1978 | Guide for the preparation of test procedures for evaluating the thermal endurance of electrical insulation systems |
| IEC 60216-2:2005 | Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria |
| IEC 60505:2011 | Evaluation and qualification of electrical insulation systems |
| IEC 60085:2007 | Electrical insulation - Thermal evaluation and designation |
| IEC 60216-4:1980 | Guide for the determination of thermal endurance properties of electrical insulating materials - Part 4: Instructions for calculating the thermal endurance profile |
| IEC 60216-3:2006 | GUIDE FOR THE DETERMINATION OF THERMAL ENDURANCE PROPERTIES OF ELECTRICAL INSULATING MATERIALS - STATISTICAL METHODS |
| IEC 60216-5:2008 | Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material |
| IEC 60216-3-1:1990 | Guide for the determination of thermal endurance properties of electrical insulating materials. Part 3: Instructions for calculating thermal endurance characteristics - Section 1: Calculations using mean values of normally distributed complete data |
| IEC 60216-3-2:1993 | Guide for the determination of thermal endurance properties of electrical insulating materials - Part 3: Instructions for calculating thermal endurance characteristics - Section 2: Calculations for incomplete data: proof test results up to and including the median time to end-point (equal test groups) |
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