GB/T 21711.201-2024 English PDF

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GB/T 21711.201-2024: Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21711.201-2024	294	Add to Cart	3 days	Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values	Valid

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Basic data

Standard ID: GB/T 21711.201-2024 (GB/T21711.201-2024)
Description (Translated English): Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L25
Classification of International Standard: 29.120.70; 31.220.99
Word Count Estimation: 14,183
Date of Issue: 2024-03-15
Date of Implementation: 2024-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 21711.201-2024: Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29.120.70;31.220.99 CCSL25 National Standards of People's Republic of China Basic Electromechanical Relays Part 2-1.Reliability B10 value verification procedure (IEC 61810-2-1.2017, IDT) Released on 2024-03-15 2024-07-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 B10 Verification 2 4.1 General 2 4.2 Requirement 2 4.3 Execution of the test 3 5 Estimation and verification of B10D 4 5.1 General 4 5.2 Requirement 5 5.3 Execution of the test 6 Appendix A (informative) Example of fault assessment in B10D estimation 8 References 9 Figure 1 Flowchart 2 Figure 2 Flow chart of evaluating dangerous failure of relays Table A.1 Example of recording the number of cycles when a fault occurs 8

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is part 2-1 of GB/T 21711 "Basic electromechanical relays". GB/T 21711 has been published in the following parts. --- Part 1.General and safety requirements; --- Part 2.Reliability; --- Part 2-1.Reliability B10 value verification procedure; --- Part 7.Test and measurement procedures. This document is equivalent to IEC 61810-2-1.2017 "Basic electromechanical relays Part 2-1.Reliability B10 value verification procedure". Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee for Standardization of Electrical Relays (SAC/TC217). This document was drafted by. Xiamen Hongfa Electroacoustic Co., Ltd., Harbin Institute of Technology, and China Electronics Technology Standardization Institute. The main drafters of this document are. Lin Weilin, You Jiaxin, Lu Ningyi, Zhou Yanmei, Xu Le, Zhai Guofu, and Wang Jue.

Introduction

GB/T 21711 "Basic Electromechanical Relays" was formulated to standardize the development, testing, quality assessment and GB/T 21711 "Basic Electromechanical Relays" is a product standard for various basic electromechanical relays. The basic specification is planned to consist of 7 parts. --- Part 1.General and safety requirements. The purpose is to determine the basic electromechanical relays used in various fields of electrical or electronic engineering Functional and safety requirements and safety related characteristics. --- Part 2.Reliability. The purpose is to standardize the requirements for reliability assessment of basic electromechanical relays. --- Part 2-1.Reliability B10 value verification procedure. The purpose is to standardize the reliability index assessment of basic electromechanical relays and reliability growth requirements assessment requirements. --- Part 3.Forced positioning (mechanical interlocking) contact relays. The purpose is to add applicable Special requirements for forced positioning (mechanical interlocking) contact relays. --- Part 4.General and safety requirements for reed relays. The purpose is to provide reed relays suitable for general control circuits. Establish basic functional and safety requirements. --- Part 7.Test and measurement procedures. The purpose is to specify the test and measurement procedures applicable to basic electromechanical relays. --- Part 10.Additional functional characteristics and safety requirements for large capacity relays. The purpose is to build on the general requirements of Part 1 In addition, additional functional characteristics and safety requirements applicable to large-capacity relays are added. Basic Electromechanical Relays Part 2-1.Reliability B10 value verification procedure

1 Scope

This document establishes a reliability test procedure for use when there are increased reliability verification requirements for basic electromechanical relays. This document specifies the relays assembled in safety-related machinery control systems in accordance with IEC 62061 and GB/T 16855.1- Detailed provisions are given in.2018.For this relay, the test specified in this document can give the B10 value (B10D value) of dangerous failure.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 16855.1-2018 Safety of machinery - Safety-related components of control systems - Part 1.General principles for design (ISO 13849-1. 2015, IDT) GB/T 21711.1-2023 Basic electromechanical relays Part 1.General and safety requirements (IEC 61810-1.2015, IDT) GB/T 21711.2-2024 Basic electromechanical relays Part 2.Reliability (IEC 61810-2.2017, IDT) IEC 61810-3 Basic electromechanical relays Part 3.Positive positioning (mechanical interlocking) contact relays IEC 62061 Electrical safety of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems Note. GB 28526-2012 Electrical safety of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems (IEC 62061. 2005, IDT)

3 Terms and definitions

The terms and definitions defined in GB/T 21711.2-2024 and the following apply to this document. 3.1 Dangerous failure Failure that could put safety-related parts of a control system into a hazardous or non-functional state. [Source. GB/T 16855.1-2018, 3.1.5, modified] 3.2 Test-related definitions 3.2.1 Type test Conformity testing is performed on samples representative of production to obtain basic performance data or to verify that these relays comply with the specified Require. [Source. GB/T 21711.2-2024, 3.21.1] ......

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