IEC 61124:2012，可靠度試驗-常數失效率與常數失效強度符合性試驗 (IEC 61124, Reliability Testing - Compliance Tests for Constant Failure Rate and Constant Failure Intensity)
2012年改版為第3版(ed 3.0)，1997年取代IEC 60605-7, Equipment Reliability Testing - Part 7: Compliance Test Plans for Failure Rate and Mean Time Between Failure Assuming Constant Failure Rate
ed 3.0, 2012-5-23, 248 pages (EN-FR), 126 pages (EN only) (有效期至2016年)
ed 2.0, 2006-3-15, 249 pages (EN-FR)
ed 1.0, 1997-7-30, 117 pages
考量四項可靠度指標：
失效率(failure rate)
失效強度(failure intensity)
平均失效時間(mean time to failure, MTTF)
平均失效間操作時間(mean operating time between failure, MTBF)
2012年改版為第3版(ed 3.0)改版重點包括：
IEC 61124:2012 gives a number of optimized test plans, the corresponding operating characteristic curves and expected test times. In addition the algorithms for designing test plans using a spreadsheet program are also given, together with guidance on how to choose test plans. This standard specifies procedures to test whether an observed value of: failure rate, failure intensity, meantime to failure (MTTF), and mean operating time between failures (MTBF). The main changes with respect to the previous edition are as follows:
A number of new test plans have been added based on the Russian standard GOST R 27.402, and it is intended to align the new edition of MIL-HDBK-781 with this edition. Algorithms for optimizing test plans using a spreadsheet program are given and a number of optimized test plans are listed. Furthermore, emphasis is laid on the fact that the test should be repeated following design changes;
Discrepancies in test plans A, B as well as Annexes A and B that originated in IEC 60605-7, now withdrawn, have been corrected so these test plans differ from those given in previous editions of IEC 61124. As requested by the National Committees, mathematical background material and spreadsheet program information has been moved to informative annexes. In addition, the symbol lists have been divided, so that some annexes have separate lists of symbols;
Guidance on how to choose test plans has been added as well as guidance on how to use spreadsheet programs to create them. Test plans A.1 to A.9 and B.1 to B.13 have been corrected;
Subcluses 8.1, 8.2, 8.3, Clause 9, Annex C, Clauses G.2, I.2, I.3 and Annex J are unchanged, except for updated terminology and references. The contents of the corrigendum of January 2013 have been included in this copy.
Table of Contents
1. Scope
2. Normative References
3. Terms, Definitions, Abbreviations and Symbols
4. General Requirements and Area of Application
4.1 Requirements
4.2 Applicability to Replaced and Repaired Items
4.3 Types of Test Plans
4.3.1 General
4.3.2 Advantages and Disadvantages of the Different Test Plan Types
5. General Test Procedure
5.1 Test Conditions
5.2 General Characteristics of the Test Plans
5.3 Data to be Recorded
5.4 Calculation of Accumulated Test Time, T*
5.5 Number of Failures
6. Sequential Test Plans
6.1 General
6.2 Common Test Procedure
6.3 Decision Criteria
6.4 Overview of Test Plans
7. Fixed Time/Failure Terminated Test Plans - Fixed Duration Test Plans
7.1 General
7.2 Common Test Procedure
7.3 Decision Criteria
7.4 Test Plans
8. Design of Alternative Time/Failure Terminated Test Plans
8.1 General
8.2 Design Procedure
8.3 Common Test Procedure
8.4 Decision Criteria
9. Calendar Time/Failure Terminated Test Plans for Non-Replaced Items
9.1 General
9.2 Common Test Procedure
9.3 Decision Criteria
9.4 Use of Table 2 of IEC 61123:1991 for Fixed Calendar Time Tests
9.4.1 General
9.4.2 Procedure when the Test Time is given
9.4.3 Procedure when the Number of Items is given
10. Combined Test Plans10.1 General
10.2 Common Test Procedure
10.3 Decision Criteria
10.4 Test Plans
11. Performing the Test
12. Presentation of Results
Annex A (normative): Tables and Graphs for Sequential Test Plans
Annex B (normative): Graphs for Fixed Time/Failure Terminated Test Plans
Annex C (normative): Graphs for Alternative Time/Failure Terminated Test Plans
Annex D (normative): Tables and Graphs for Combined Test Plans and Additional Sequential Test Plans
Annex E (informative): Examples and Mathematical References for Sequential Test Plans
Annex F (informative): Design of Sequential Test Plans Using a Common Spreadsheet Program
Annex G (informative ): Example and Mathematical References for Fixed Time/Failure Terminated Test Plans - Fixed Duration Test Plans
Annex H (informative): Design of Fixed Duration Time/Failure Terminated Test Plans Using a Spreadsheet Program
Annex I (informative): Example and Mathematical References for the Design of Alternative Time/Failure Terminated Test Plans
Annex J (informative): Example and Mathematical References for the Calender Time Terminated Test Plans
Annex K (informative): Derivation and Mathematical Reference for the Optimized Test Plans of GOST R 27 402