IEC 60300-3-5 pdf download

IEC 60300-3-5 pdf download.Application guide – Reliability test conditions and statistical test principles
1 Scope
This part of IEC 60300 provides guidelines for the planning and performing of reliability tests and the use of statistical methods to analyse test data. It describes the tests related to repaired and non-repaired items together with tests for constant and non-constant failure intensity and constant and non-constant failure rate. It is applicable: – when reliability testing is called for in a contract, either specifically or by inference; – when planning a reliability test; – during a reliability test; – when analysing data from and reporting on the outcome of a reliability test. This standard also applies when a contract or test plan specifies the use of IEC statistical standards, without specific reference to a particular standard. Many different tests are performed during the development, design verification and design validation of a new product. The purpose of these tests is to discover weaknesses in the design and to undertake actions to eliminate these weaknesses and thereby improve performance, quality, safety, robustness, reliability and availability and reduce costs. This standard covers only the cases where statistical methods are used to analyse test data although the guidelines on test conditions, test planning and test documentation will be applicable to most tests.The following topics are important and although discussed in this standard are more fully dealt with in their respective standards: availability testing (see IEC 61 070); testing of maintainability measures (see IEC 60706) and measures of reliability growth (see IEC 61 01 4 and IEC 61 1 64). This standard does not cover software testing (see IEC 61 704), however it is applicable to items containing both hardware and software. This standard is therefore applicable to a wide range of products including consumer, industrial, military and aerospace applications. This part of IEC 60300 covers analysis for verification, determination, comparison and success/failure ratio evaluation. A flow chart giving guidance for planning the statistical treatment of reliability test data is shown in clause 9. Although not described in this standard, the considerations and statistical tools can be used in connection with environmental tests, accelerated step-stress tests and over-stress tests.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60300. For dated references, subsequent amend- ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60300 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60050(1 91 ):1 990, International Electrotechnical Vocabulary (IEV) – Chapter 1 91 : Dependability and quality of service IEC 60068 (all parts), Environmental testing IEC 60300-2:1 995, Dependability management – Part 2: Dependability programme elements and tasks IEC 60300-3-2:1 993, Dependability management – Part 3: Application guide – Section 2: Collection of dependability data from the field IEC 60300-3-4:1 996, Dependability management – Part 3: Application guide – Section 4: Guide to the specification of dependability requirements IEC 60300-3-7:1 999, Dependability management – Part 3: Application guide – Section 7: Reliability stress screening of electronic hardware IEC 60605-2:1 994, Equipment reliability testing – Part 2: Design of test cycles IEC 60605-4:1 986, Equipment reliability testing – Part 4: Procedures for determining point estimates and confidence limits from equipment reliability determination tests NOTE In revision as ‘point estimates and confidence intervals for the exponential distribution’. IEC 6081 2:1 985, Analysis techniques for system reliability – Procedure for failure mode and effects analysis (FMEA) IEC 61 025:1 990, Fault tree analysis (FTA) IEC 61 070:1 991 , Compliance test procedures for steady-state availability IEC 61 078:1 991 , Analysis techniques for dependability – Reliability block diagram method IEC 61 1 23:1 991 , Reliability testing – Compliance test plans for success ratio IEC 61 1 24:1 997, Reliability testing – Compliance tests for constant failure rate and constant failure intensity