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GB/T 2424.25-2024Environmental testing - Part 3: Test guidance - Seismic test methods (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

November 28, 2024

Implementation date

June 1, 2025

Scope

GB/T 2424.25-2024 (Environmental testing - Part 3: Test guidance - Seismic test methods) is available as an English-translated PDF.

GB/T 2424.25-2024 — This document describes a method for conducting seismic tests of full-scale equipment using a shaking table based on dynamic test data. This document aims to provide a variety of test methods to facilitate the relevant specifications to specify equipment seismic tests and verify equipment performance in seismic identification.

Provides support for manufacturers to verify the seismic performance of equipment, or for users to evaluate and verify the seismic performance of equipment. This document is applicable to seismic tests of electrical and electronic equipment. Other equipment and components shall be implemented accordingly.

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Document preview — GB/T 2424.25-2024

National Standard of the People's Republic of China

ICS: 19.040
Classification: K 04
Replacing: GB/T 2424.25-2000

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 General requirements and matters to be considered in identification
4.1 General and specific earthquake types
4.2 Usage Status
4.3 Fault Judgment Criteria
4.4 Classification Criteria
5 Test requirements
5.1 Installation Requirements
5.2 Measurement requirements
5.3 Frequency range
6 Test waveform selection
6.1 Overview
6.2 Multi-frequency waves
6.3 Single Frequency Wave
7 Test Wave
7.1 General Provisions
7.2 Multi-frequency wave test
7.3 Single frequency test
7.4 Other test waveforms
8 Test conditions
8.1 Vibration Response Check
8.2 Test methods
8.3 Damping Selection
8.4 S1 Earthquake and S2 Earthquake
8.5 Component Testing
8.6 Component Test
9 Uniaxial and multiaxial tests
9.1 Uniaxial test
9.2 Biaxial test
9.3 Triaxial test
10 General earthquake test conditions
11 Calculation method of amplitude of general earthquake test
11.1 General Provisions
11.2 Test conditions
12 General earthquake test parameters
12.1 Duration of the test
12.2 Test acceleration
13 General earthquake response spectrum requirements
14 General earthquake tests
14.1 Vibration Response Check
14.2 Test Types
15 Specific earthquake tests
15.1 Overview
15.2 Multi-frequency waves
15.3 Single Frequency Wave
15.4 Other test waveforms
Appendix A (Informative) Published parts of GB/T 2424
Appendix B (Informative) Comparison of the structure numbers of this document and IEC 60068-3-3:2019
Appendix C (Informative) Technical differences between this document and IEC 60068-3-3:2019 and their causes
Appendix D (Informative) Test Selection Flowchart
D.1 Test type selection
D.2 General earthquake type-Calculation amplitude test
D.3 Specific earthquake type-uniaxial test
D.4 Specific earthquake type - multiaxial test
Appendix E (Informative) Information and Communication Equipment Earthquake Test Conditions
E.1 Seismic test method
E.2 Test severity level
E.3 Identification Standards
Appendix F (Informative) Earthquake Test Conditions for Power Equipment
F.1 Seismic test method
F.2 Test severity level
F.3 Identification Standards
References
Figure 1 Strong earthquake part of the time history Figure 1 Strong earthquake part of the time history
Figure 2 Typical response spectrum envelope
Figure 3 TRS schematic diagram
Figure 4 Continuous sine wave
Figure 5 Test wave sequence
Figure 6 Sine beat frequency superposition of multiple spectra
Figure 7 Inclined single axis table
Figure 8 Schematic diagram of waveform magnification factor
Figure 9 Recommended shape of RRS (logarithmic x logarithmic coordinates)
Figure D.1 Earthquake classification selection
Figure D.2 Calculation Amplitude Test Flowchart
Figure D.3 Uniaxial test flow chart
Figure D.4 Specific earthquake type - multiaxial test
Figure E.1 Information and communication equipment earthquake floor response factor (zeta=3%)
Table 1 Typical damping ratio (percentage of critical damping value) Table 1 Typical damping ratio (percentage of critical damping value)
Table 2 Selection of test type
Table 3 Ground acceleration magnitude
Table 4 Relationship between earthquake intensity and maximum ground acceleration
Table 5 Recommended superelevation coefficient (K)
Table 6 Directivity coefficient (D)
Table 7 Form Factor
Table B.1 Comparison of structure numbers between this document and IEC 60068-3-3:2019
Table C.1 Technical differences between this document and IEC 60068-3-3:2019 and their reasons
Table E.1 Horizontal axis earthquake response multiple values
Table E.2 Vertical axis earthquake response multiple values
Table E.3 Information and communication equipment seismic performance evaluation table
Table F.1 Maximum horizontal earthquake acceleration

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 is required.

This document is Part 25 of GB/T 2424.For the published parts of GB/T 2424, see Appendix A.

This document replaces GB/T 2424.25-2000 "Environmental testing for electric and electronic products Part 3: Test guidelines for earthquake tests" Compared with GB/T 2424.25-2000, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

Added test waveform selection (see Chapter 6);-Added test waves (see Chapter 7);-Added test conditions (see Chapter 8); -Added uniaxial and multiaxial tests (see Chapter 9); -the ground acceleration has been changed (see 11.2.4, 8.2.4 of the 2000 edition); -Added general earthquake RRS (see Chapter 13);-the standard amplitude conventional test method and related clause content requirements have been deleted (see Chapter 7 of the 2000 edition). -this document is modified to adopt IEC 60068-3-3:2019 "Environmental testing Part 3-3.Supporting documents and guidelines for equipment seismic testing method".

Compared with IEC 60068-3-3:2019, this document has many structural adjustments. A comparison of the structural number changes between the two documents See Appendix B for the table.

This document has many technical differences compared with IEC 60068-3-3:2019.A list of these technical differences and their reasons is given in Appendix C.

The following editorial changes were made to this document.

The name of this document is changed to "Environmental testing Part 3: Test guidelines Seismic test method";

Added informative reference to GB 55002-2021; -the informative reference "GB/T 17742-2020" replaces "IEC TS 62271-210:2013" (see 11.2.4); -Added the informative appendix "Constituent documents of GB/T 2424" (see Appendix A); -Added the informative appendix "List of changes in structure numbers" (see Appendix B); -Added the informative appendix "List of technical differences and their causes" (see Appendix C); -Added the informative appendix "Seismic test conditions for information and communication equipment" (see Appendix E); -Added the informative appendix "Earthquake test conditions for power equipment" (see Appendix F); -Changed references (see References). -

Introduction

The term "environmental conditioning" or "environmental testing" refers to the testing of equipment or components in the conditions of use, transportation, and storage that they may be subjected to.

Performance evaluation in natural or artificial environments.

Each part of the GB/T 2424 series of standards provides a set of background information for environmental tests, which is intended to be composed of the following parts.

GB/T 2424.1-2015 Environmental testing Part 3: Supporting documents and guidelines for low temperature and high temperature tests.

Provide test guidelines for low temperature test, high temperature test, test with sudden temperature change and test with gradual temperature change.

GB/T 2424.2-2005 Environmental testing procedures for electrical and electronic products, Guidelines for damp heat testing.

When formulating humidity and heat test standards for products or equipment, provide appropriate test methods and severity levels.

GB/T 2424.5-2021 Environmental testing Part 3: Supporting documents and guidelines Temperature test chamber performance confirmation.

To provide a uniform and reproducible method to confirm that the temperature test chamber complies with the relevant standards when there is no load.

Regulation.

GB/T 2424.6-2021 Environmental testing Part 3: Supporting documents and guidelines Temperature/humidity test chamber performance confirmation.

The purpose of this test is to provide a uniform and reproducible method to confirm that the temperature and humidity test chamber meets the requirements of the relevant Relevant standard regulations.

GB/T 2424.7-2024 Environmental testing Part 3: Supporting documents and guidelines Test A (low temperature) and B (high temperature) Temperature chamber measurement (with load). The purpose is to specify a uniform and reproducible method to confirm that the temperature chamber is Thermal/non-heat dissipation test sample load and air circulation in the working space, in accordance with the climate test requirements Require.

GB/T 2424.10-2012 Environmental testing General guidelines for atmospheric corrosion accelerated testing.

Corrosion test method standards, procedures and references for conducting artificial accelerated corrosion tests.

GB/T 2424.11-2013 Environmental testing Part 2: Test methods Test Kc. Dioxide on contact points and connectors Sulfur test guide. The purpose is to provide guidance when formulating sulfur dioxide test standards for contact points and connectors of electronic and electrical products or equipment.

Appropriate test methods and severity levels.

GB/T 2424.12-2014 Environmental testing Part 2: Test methods Test Kd. Hydrogen sulfide at contact points and connections Test Guide. The purpose is to provide appropriate guidance when formulating hydrogen sulfide test standards for contact points and connectors of electronic and electrical products or equipment.

Test methods and severity levels.

GB/T 2424.15-2008 Environmental testing for electric and electronic products Part 3: Guidelines for temperature/low pressure combined testing. Purpose it specifies a combined temperature/low pressure test involving a range of pressures applied on the ground or in the air.

GB/T 2424.17-2008 Environmental testing for electric and electronic products Part 2: Test methods Test T. Soldering test guide the purpose is to provide background information and suggestions for writers of soldering test specifications.

To provide appropriate test methods and severity levels for seismic testing.

GB/T 2424.26-2008 Environmental testing for electric and electronic products Part 3: Supporting documents and guidance for vibration test selection.

The purpose is to provide a basis for selecting steady-state vibration test methods.

GB/T 2424.27-2013 Environmental testing support documents and guidelines for temperature and humidity test chamber uncertainty calculation.

Provides guidance for analyzing the uncertainty of temperature and humidity climate chambers.

This document first clarifies the classification requirements of seismic tests, and gives the seismic test procedures, waveform requirements and test axial requirements, and gives general the calculation method of the severity level of earthquake types and specific earthquake types is given in the appendix. At the same time, the specific earthquake test of information and communication equipment and power equipment is given in the appendix.

condition.

Environmental testing Part 3: Test guidelines - Seismic test methods

1 Scope

This document describes a method for conducting seismic tests of full-scale equipment using a shaking table based on dynamic test data.

This document aims to provide a variety of test methods to facilitate the relevant specifications to specify equipment seismic tests and verify equipment performance in seismic identification.

Provides support for manufacturers to verify the seismic performance of equipment, or for users to evaluate and verify the seismic performance of equipment.

This document is applicable to seismic tests of electrical and electronic equipment. Other equipment and components shall be implemented accordingly.

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.

in this document.

ISO 2041 Mechanical vibration, shock and condition monitoring vocabulary Oring-Vocabulary Note. GB/T 2298-2010 Mechanical vibration, shock and condition monitoring vocabulary (ISO 2041:2009, IDT) IEC 60068-1 Environmental testing-Part 1: General and guidance Note. GB/T 2421-2020 Overview and Guidelines for Environmental Testing (IEC 60068-1:2013, IDT) IEC 60068-2-6 Environmental testing Part 2-6.Tests Test Fc. Vibration (sinusoidal) [E nvironmental testing-Part 2-6.Tests-Test Fc.Vibration (sinusoidal)] Note. GB/T 2423.10-2019 Environmental testing Part 2: Test methods Test Fc. Vibration (sinusoidal) (IEC 60068-2-6:2007, IDT IEC 60068-2-47 Environmental testing Part 2-47.Installation of specimens for vibration, shock and similar dynamic tests (En-vironmental testing-Part 2-47.Test-Mounting of specimens for vibration, impact and similar dynam-ic tests) Note. GB/T 2423.43-2008 Environmental testing for electric and electronic products Part 2: Test methods for vibration, shock and similar dynamic test samples Installation (IEC 60068-2-47:2005, IDT) IEC 60068-2-57 Environmental testing Part 2-57.Test Test Ff. Vibration-Time history and sine beat frequency method (Envir-onmental testing-Part 2-57.Tests-Test Ff. Vibration-Time-history and sine-beat method) Note. GB/T 2423.48-2018 Environmental testing Part 2: Test methods Test Ff. Vibration time history and sinusoidal beat frequency method (IEC 60068-2-57:2013, IDT) IEC 60068-2-64 Environmental testing Part 2-64.Test Test Fh. Vibration, broadband random and guidance (Environment-al testing-Part 2-64.Tests-Test Fh.Vibration, broad band random and guidance) Note. GB/T 2423.56-2023 Environmental testing Part 2: Test methods Test Fh. Broadband random vibration and guidance (IEC 60068-2-64:2019, IDT IEC 60068-2-81 Environmental testing Part 2-81.Test Test Ei. Shock response spectrum synthesis (Environment-al testing-Part 2-81.Tests-Test Ei.Shock - Shock response spectrum synthesis) Note. GB/T 2423.57-2008 Environmental testing for electric and electronic products Part 2: Test methods Test Ei. Shock response spectrum synthesis (IEC 60068-2-81:2003, IDT)

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 37 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 2041 · IEC 60068

Cited by

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