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GB/T 21711.10-2025: Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays
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Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays
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GB/T 21711.10-2025
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Basic data | Standard ID | GB/T 21711.10-2025 (GB/T21711.10-2025) | | Description (Translated English) | Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L25 | | Classification of International Standard | 29.120.70; 31.220.99 | | Word Count Estimation | 62,678 | | Date of Issue | 2025-05-30 | | Date of Implementation | 2025-05-30 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21711.10-2025: Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays
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ICS 29.120.70;31.220.99
CCSL25
National Standard of the People's Republic of China
Basic Electromechanical Relays
Part 10.Additional functional characteristics and features of large capacity relays
Security Requirements
(IEC 61810-10.2019, IDT)
Released on 2025-05-30
2025-05-30 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface V
Introduction VI
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
3.5 Terms and definitions related to contacts 2
4 Influence 2
5 Rated value 2
5.6 Electrical durability 3
5.7 Working speed 3
5.8 Contact load 3
6 General test rules 3
7 Documents and logos 4
8 Temperature rise 4
8.4.4 Threaded and unthreaded terminals 4
8.4.5 Alternative terminal types 4
8.4.6 Socket 5
9 Basic working functions 6
10 Dielectric withstand voltage 6
11 Electrical durability 8
11.1 General 8
11.2 Overload test 9
11.3 Severity Level 9
12 Mechanical durability 9
13 Clearances, creepage distances and solid insulation 9
13.1 General 9
13.2 Clearance and creepage distances 9
13.3 Solid insulation 10
13.3.1 General 10
13.3.2 Partial discharge 11
13.6 System Insulation Coordination Assessment 11
13.6.1 General 11
13.6.2 Specific procedures 11
13.6.3 Condition 11
13.6.4 Test Procedure 11
13.6.5 Data evaluation 12
14 Lead terminal 12
14.1 General 12
14.2 Threaded and unthreaded terminals 12
15 Seal 12
16 Heat and fire resistance 13
17 Special Test 13
Appendix A (Normative) Interpretation of relays 14
Appendix B (Informative) Test Device 15
Appendix C (Normative) Test Device 18
Appendix D (Informative) Special loads 19
Appendix E (Normative) Temperature rise test configuration 20
Appendix F (Normative) Measurement of electrical clearance and creepage distance 21
Appendix G (Normative) Relationship between rated impulse voltage, rated voltage and overvoltage category 22
Appendix H (Normative) Pollution Degree 24
Appendix I (Normative) Tracking resistance test 25
Appendix J (Informative) Terminal Series Diagram 26
Appendix K (Normative) Glow-wire test 27
Appendix L (Normative) Ball Pressure Test 28
Appendix M (Informative) Needle flame test 29
Appendix N (Informative) Standard welding process resistance 30
Appendix O (Informative) Risk Assessment 31
Appendix P (Informative) Mechanical properties of lead terminals 32
P.1 General 32
P.2 Mechanical strength of lead terminals 32
P.2.1 General 32
P.2.2 Test procedure 32
P.2.3 Requirement 33
P.3 Bending test (conductor damage and accidental loosening test) 33
P.3.1 General 33
P.3.2 Test procedure 33
P.3.3 Requirement 35
P.4 Pull-out test 35
P.4.1 General Principles 35
P.4.2 Test procedure 35
P.4.3 Requirement 36
Appendix Q (Normative) Long-term stability of seals (leakage rate evaluation) 37
Q.1 General 37
Q.2 Test procedure 37
Q.2.1 Preprocessing 37
Q.2.2 Evaluation 37
Q.2.3 Requirement 38
Appendix R (Informative) Short-circuit capacity 39
R.1 General 39
R.2 Test procedure 40
R.2.1 General 40
R.2.2 Pretreatment 40
R.2.3 Test circuit setting 40
R.2.4 Test procedure and/or sequence 40
R.3 Requirement 40
R.4 Test conditions 40
Appendix S (Informative) Special Application Test Photovoltaic System 42
S.1 General 42
S.2 Insulation coordination 42
S.3 Product marking 42
S.4 Performance requirements---Electrical durability 42
S.5 Type test 42
S.5.1 Overview 42
S.5.2 Short circuit test 43
S.5.3 Critical DC load current test 43
S.5.4 Climate test 44
S.5.5 Special tests - salt spray, vibration and shock 44
Appendix T (informative) Special application test road vehicles 45
T.1 General 45
T.2 Road vehicles 45
T.2.1 General requirements 45
T.2.2 Instantaneous drop in supply voltage 46
T.2.3 Reset behavior when coil voltage drops 47
T.2.4 Coil overvoltage 47
T.2.5 Slow drop and rise of supply voltage 48
T.2.6 Electrical durability 49
T.2.7 Noise 49
T.2.8 Vibration 50
T.2.9 Impact 52
References 54
Figure 1 Test procedure for system evaluation 12
Figure P.1 Bending test equipment 35
Figure Q.1 Temperature cycle 37
Figure R.1 Short-circuit current capability test circuit 39
Figure T.1 Instantaneous voltage drop of the system nominal voltage 46
Figure T.2 Reset test supply voltage 47
Figure T.3 PSD of acceleration vs. frequency 50
Figure T.4 PSD of acceleration vs. frequency 51
Table 1 Type test 3
Table 2 Required relay information 4
Table 3 Test wires with test current greater than 400A and not exceeding 800A determined by the current carried by the lead-out terminals
Table 4 Test copper busbar with test current greater than 400A and not exceeding 1000A determined by the current carried by the lead-out terminal
Table 5 Dielectric Withstand Voltage --- AC 6
Table 6 Dielectric Withstand Voltage --- DC 7
Table 7 Minimum electrical clearance in air for insulation coordination 9
Table B.1 Verification of closing and opening capabilities (abnormal conditions) 15
Table B.2 Verification of closing and opening capabilities (normal conditions) 16
Table B.3 Electrical durability test 17
Table G.1 Rated voltage of power supply system and equipment when overvoltage protection is provided by the arrester specified in GB/T 21711.1
The corresponding relationship between the rated impulse voltage 22
Table P.1 Tightening torque for verifying the mechanical strength of threaded terminals 33
Table P.2 Round copper conductor pull-out and bending test values 34
Table P.3 Flat copper conductor pull-out test values 36
Table S.1 Specific tests for photovoltaic systems 42
Table S.2 Action cycle times 44
Table S.3 Special test 44
Table T.1 Special tests for road vehicles 45
Table T.2 Un=12V system supply voltage 48
Table T.3 Un=24V system supply voltage 49
Table T.4 PSD vs. frequency 50
Table T.5 PSD vs. frequency 52
Table T.6 PSD vs. frequency, additional test when the natural frequency fn of the device under test is less than 30 Hz 52
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 10 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 3.Forced positioning (mechanical interlocking) contact relays;
--- Part 7.Test and measurement procedures.
--- Part 10.Additional functional characteristics and safety requirements for large capacity relays.
This document is equivalent to IEC 61810-10.2019 "Basic electromechanical relays - Part 10.Additional functional characteristics of large capacity relays
and Safety Requirements.
The following minimal editorial changes were made to this document.
--- According to the content of 14.2, the additional reference of the test items of "threaded terminal and non-threaded terminal (when applicable)" in Table 1 is increased
"IEC 60999-2";
--- Added Note 2 to Table 4.
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 is proposed and coordinated by the National Technical Committee for Standardization of Electrical Relays (SAC/TC217).
This document was drafted by. Xiamen Hongfa Electroacoustic Co., Ltd., Kunshan Guoli Electronic Technology Co., Ltd., Xiamen Hongfa Electric Power Co., Ltd.
Co., Ltd., Zhangzhou Hongfa Electroacoustic Co., Ltd., Zhejiang Hongzhou New Energy Technology Co., Ltd., and China Electronics Technology Standardization Institute.
The main drafters of this document are. Lin Weilin, Lu Ningyi, Ji Yan, Zhou Yanmei, Liu Xufeng, Hong Yaosheng, Zhu Yiqing, Yang Yanli and Wang Jue.
Introduction
In order to standardize the development, testing, quality assessment and use of relay products in my country and promote the steady and coordinated development of the relay industry, this
GB/T 21711 "Basic Electromechanical Relays". GB/T 21711 is the basic product specification for various basic electromechanical relays. It is planned to consist of seven parts.
composition.
--- 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
Add additional functional characteristics and safety requirements applicable to large-capacity relays.
Basic Electromechanical Relays
Part 10.Additional functional characteristics and features of large capacity relays
Security Requirements
1 Scope
The additional functional and safety requirements in this document apply to basic electromechanical relays (non-definite time all or nothing relays) with high capacity requirements,
Large capacity requirements such as breaking or short-circuiting capabilities, similar to low voltage electrical equipment. These relays incorporate a specific design (such as magnetic arc blowing)
Used to extinguish the arc between contacts, or use insulation coordination not covered by GB/T 21711.1-2023 (such as using gas to fill the contact cavity).
(fill), or safety assessment requirements not covered by GB/T 21711.1-2023 (such as higher loads).
This document defines additional requirements for high capacity relays with general performance that can be used in smart grids, electric vehicles and
Other applications, such as switching for battery charge/discharge, include.
a) Electrical energy storage systems;
b) Photovoltaic energy systems;
c) electric road vehicles and electric construction vehicles;
d) power electronic systems and equipment;
e) cells and batteries;
f) Road vehicles.
Compliance with the requirements of this document is verified by specified type tests.
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 16935.1-2023 Insulation coordination for equipment in low voltage systems Part 1.Principles, requirements and tests (IEC 60664-1.
2020, IDT)
Note. There is no technical difference between the referenced content of GB/T 16935.1-2023 and the referenced content of IEC 60664-1.2007.
GB/T 21711.1-2023 Basic electromechanical relays Part 1.General and safety requirements (IEC 61810-1.2015, IDT)
GB/T 21711.7-2018 Basic electromechanical relays Part 7.Test and measurement procedures (IEC 61810-7.2006, IDT)
IEC 60060-1.2010 High-voltage test technology Part 1.General definitions and test requirements (High-voltagetesttech-
Note. GB/T 16927.1-2011 High voltage test technology Part 1.General definitions and test requirements (IEC 60060-1.2010, MOD)
Part 2-14.Tests-TestN.Changeoftemperature)
Note. GB/T 2423.22-2012 Environmental testing Part 2.Test method Test N. Temperature change (IEC 60068-2-14.2009, IDT)
cedures-Part 2-17.Tests-TestQ.Sealing)
Note. GB/T 2423.23-2013 Environmental testing Part 2.Test methods Test Q. Sealing (IEC 60068-2-17.1994, IDT)
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