BS EN 61810-2-1:2017 – TC:2020 Edition
$186.33
Tracked Changes. Electromechanical elementary relays – Reliability. Procedure for the verification of B10 values
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 49 |
IEC 61810-2-1:2017 specifies reliability test procedures for electromechanical elementary relays when enhanced requirements for the verification of reliability apply. Particular provisions are given for relays incorporated in safety-related control systems of machinery in accordance with IEC 62061 and ISO 13849-1. For such relays, B 10 values for dangerous failures ( B 10D values) are derived from the tests specified in this document. This edition includes the following significant technical changes with respect to the previous edition: – limitation of tests to 10 M cycles in Clause 5; – reduction of required number of test samples to 5 in specified cases; – introduction of WeiBayes analysis for routine test under Clause 4.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 27 | National foreword |
| 32 | English CONTENTS |
| 33 | FOREWORD |
| 35 | INTRODUCTION |
| 36 | 1 Scope 2 Normative references 3 Terms and definitions |
| 37 | 3.2 Definitions related to tests 4 Verification of B10 4.1 General 4.2 Requirements 4.2.1 Test specimens |
| 38 | 4.2.2 Test circuit 4.2.3 Contact loads 4.2.4 Environmental conditions 4.2.5 Operating conditions 4.2.6 Failure criteria |
| 39 | 4.3 Performance of the tests 4.3.1 Type test 4.3.2 Routine test 5 Evaluation and verification of B10D 5.1 General |
| 40 | 5.2 Requirements 5.2.1 Test specimens 5.2.2 Test circuit |
| 41 | 5.2.3 Contact loads 5.2.4 Environmental conditions 5.2.5 Operating conditions 5.2.6 Failure criteria |
| 42 | 5.3 Performance of the tests 5.3.1 Type test 5.3.2 Routine test |
| 43 | Figure 1 – Schematic flowchart |
| 44 | Figure 2 – Schematic flowchart for relays where dangerous failures have to be assessed |
| 45 | Annex A (informative)Example illustrating the assessment of malfunctionsfor B10D evaluation A.1 Purpose A.2 Basic assumptions A.3 Example Table A.1 – Example with number of cyclesat which malfunctions have been recorded |
| 46 | A.4 Evaluation |
| 47 | Bibliography |
