HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 37977.21-2023 English PDF

US$404.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 37977.21-2023: Electrostatics - Part 2-1: Measurement methods - Ability of materials and products to dissipate static electric charge
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 37977.21-2023English404 Add to Cart 4 days [Need to translate] Electrostatics - Part 2-1: Measurement methods - Ability of materials and products to dissipate static electric charge Valid GB/T 37977.21-2023

PDF similar to GB/T 37977.21-2023


Standard similar to GB/T 37977.21-2023

GB/T 38659.1   GB/T 37284   GB/T 37283   GB/T 37977.41   GB/T 37977.43   GB/T 37977.23   

Basic data

Standard ID GB/T 37977.21-2023 (GB/T37977.21-2023)
Description (Translated English) Electrostatics - Part 2-1: Measurement methods - Ability of materials and products to dissipate static electric charge
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L06
Classification of International Standard 17.220.20
Word Count Estimation 22,258
Date of Issue 2023-08-06
Date of Implementation 2023-12-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 37977.21-2023: Electrostatics - Part 2-1: Measurement methods - Ability of materials and products to dissipate static electric charge


---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 17.220.20 CCSL06 National Standards of People's Republic of China Electrostatics Part 2-1.Test Methods Materials and products static charge dissipation capabilities (IEC 61340-2-1.2015,IDT) Published on 2023-08-06 Implemented on 2023-12-01 State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

Preface III Introduction IV 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Measurement method of charge dissipation 2 4.1 Principle 2 4.2 Environmental conditions 2 4.3 Corona charge attenuation measuring instrument 3 4.3.1 Physical structure 3 4.3.2 Test material requirements 4 4.3.3 Corona charge deposition 4 4.3.4 Electrostatic voltmeter 4 4.4 Charging board monitor 5 4.4.1 Physical structure 5 4.4.2 Charge decay time (tsd) 6 5 Practical application of test methods and procedures6 5.1 Overview 6 5.2 Charge decay test of textile materials7 5.2.1 Selection of test method 7 5.2.2 Surface treatment of test samples 7 5.2.3 Test 7 5.2.4 Test results 7 5.2.5 Test report 7 5.3 Charge decay test of gloves, finger cots or tools8 5.3.1 Selection of test method 8 5.3.2 General steps in the test process 8 5.3.3 Test procedure for charge attenuation characteristics of wearing finger cots 8 5.3.4 Test procedure for charge attenuation characteristics of wearing gloves 8 5.3.5 Test report of finger cots or gloves9 5.3.6 Test procedures for charge attenuation characteristics of handheld tools 9 5.3.7 Test report of hand-held tools11 5.4 No-load test of charging plate monitor (CPM)12 Appendix A (Normative) Performance Verification of Measuring Instruments 13 A.1 Validation of corona charge attenuation measuring instrument 13 A.1.1 Contents of instrument verification13 A.1.2 Verification of surface voltage sensitivity13 A.1.3 Verification of decay time 13 A.1.4 Verification procedures13 A.2 Verification method of capacitance of conductive plate 13 A.2.1 General 13 A.2.2 Capacitance meter method 13 A.2.3 Charge measurement method 14 A.2.4 Charge redistribution method 14 Reference 16 Figure 1 Example of charge dissipation measurement using corona charging method 3 Figure 2 Example of charge dissipation measurement using the charged metal plate method 5 Figure 3 Structural diagram of electrified plate 6 Figure 4 Charge decay time (tsd) and residual voltage (U0) 6 Figure 5 Example of attenuation waveform when testing tool10 Figure A.1 Equivalent circuit of CPM and reference capacitor14

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 2-1 of GB/T 37977 "Electrostatics". GB/T 37977 has released the following parts. ---Part 2-1.Test methods Materials and products electrostatic charge dissipation ability; ---Part 2-3.Test methods for resistance and resistivity of antistatic solid planar materials; ---Part 3-2.Simulation method of electrostatic effects and electrostatic discharge test waveform of machine model (MM); ---Part 4-8.Standard test methods for electrostatic discharge shielding bags in specific applications; ---Part 5-1.General requirements for electrostatic protection of electronic devices. This document is equivalent to IEC 61340-2-1.2015 "Electrostatics Part 2-1.Test methods for electrostatic charge dissipation capabilities of materials and products". This document has made the following minimal editorial changes. ---Incorporated the amendments to IEC 61340-2-1.2015/AMD1.2022, the outer margins of the clauses involved are Vertical double lines (‖) are marked. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed and administered by the Ministry of Industry and Information Technology of the People's Republic of China. This document was drafted by. China Electronics Technology Standardization Institute, Shenzhen Great Wall Development Technology Co., Ltd., Zhengzhou Quality Technology Supervision, Inspection and Testing Center, Shenzhen Zhongming Technology Co., Ltd., Kuaike Intelligent Equipment Co., Ltd., Shanghai Maritime University, China Electronics Sub-Instrument Industry Association, Information Industry Anti-static Product Quality Supervision and Inspection Center, Beijing Oriental Measurement and Testing Institute. The main drafters of this document. Zhu Sai, Xiang Daocai, Liu Lu, Zhu Lin, Han Lingling, Qi Guoqiang, Cai Lihua, Sun Keping, Sun Yanlin, Sun Siyu, Yang Ming, Song Jingnan, Chen Meishuang.

Introduction

The GB/T 37977 series of standards are basic standards for electrostatics. They all adopt the IEC 61340 series of international standards to define electrostatic effects. Simulation methods, anti-static parameter testing methods for anti-static materials and products, standard test methods in specific applications, electrostatic protection of electronic devices Protect etc. The GB/T 37977 series of standards is planned to consist of 11 parts, consistent with the structure of the IEC 61340 series of standards. ---Part 2-1.Test methods for electrostatic charge dissipation capabilities of materials and products. The purpose is to specify test methods for testing insulation and the static charge dissipation capabilities of static dissipative materials and products. ---Part 2-3.Test methods for resistance and resistivity of antistatic solid planar materials. The purpose is to specify test methods for measuring Test the resistance and resistivity of the anti-static solid planar material. The applicable range of the measured resistance is 104Ω~1012Ω. ---Part 3-1.Simulation method of electrostatic effects and electrostatic discharge test waveform of human body model (HBM). The purpose is to specify Basic requirements for electrostatic discharge current waveforms used to simulate HBM and the equipment used to generate and verify these waveforms. ---Part 3-2.Simulation method of electrostatic effects and electrostatic discharge test waveform of machine model (MM). The purpose is to specify Basic requirements for simulating electrostatic discharge current waveforms of MM and the equipment used to generate and verify these waveforms. ---Part 4-1.Standard test methods Resistance of floor coverings and assembled floors in specific applications. The purpose is to specify the test This test method is used to test the resistance of floor coverings and assembled floors, including ground resistance, point-to-point resistance and vertical resistance. It is The applicable range of resistance measurement is 104Ω~1013Ω. ---Part 4-3.Standard test methods for footwear in specific applications. The purpose is to specify test methods for testing anti-static shoes The resistance. ---Part 4-5.Standard test methods for characterization of electrostatic protection characteristics of human/shoe/ground systems in specific applications. The purpose is It is a prescribed test method for evaluating the anti-static performance of the person/shoe/ground system. ---Part 4-6.Standard test methods for wristbands in specific applications. The purpose is to clarify the electrical and mechanical performance requirements of the wristband. requirements, and experimental methods for testing these properties. ---Part 4-8.Standard test methods for electrostatic discharge shielding bags in specific applications. The purpose is to provide evaluation of electrostatic discharge screens Test method for bag performance. ---Part 4-9.Standard test methods for clothing in specific applications. The purpose is to specify test methods for testing anti-static clothing installed resistor. ---Part 5-1.General requirements for electrostatic protection of electronic devices. The purpose is to establish anti-static management and technical requirements to avoid or Reduce damage to electronic products due to electrostatic discharge. The conductive properties of a homogeneous conductive material can be evaluated indirectly by measuring its resistance or resistivity. Note when determining the homogeneity of the material Meaning. Some seemingly homogeneous materials exhibit non-homogeneous electrical properties; for materials whose homogeneity is uncertain and cannot be verified by other methods material, the measured resistance may be inaccurate or one-sided. When evaluating dissipative or insulating materials, especially for high-resistance materials, including conductive fibers Fabrics (such as fabrics with metal mesh), resistance measurements may also be inaccurate. In these cases, it is appropriate to directly measure the electrostatic charge dissipation of the material. Dispersion ability. Electrostatics Part 2-1.Test Methods Materials and products static charge dissipation capabilities

1 Scope

This document describes test methods for measuring the electrostatic charge dissipation capability of insulating and static dissipative materials and products. This document contains an overview of test methods and detailed test procedures for specific supplies. There are two test methods for measuring charge decay time, one is the corona charging method, and the other is the charged metal plate method. Although these two are not Different test methods may obtain different measurement results, but they have their own most suitable application ranges. Corona charging method is suitable for evaluating materials The ability of materials (e.g. textiles, packaging, etc.) to dissipate charge from their own surfaces; the charged metal plate method is suitable for evaluating materials and items (e.g.. The ability of gloves, finger cots, hand tools, etc.) to dissipate an electrical charge by being placed on or in contact with an electrical conductor. The live metal plate method may not be suitable Used to evaluate the ability of a material to dissipate charge from its own surface.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. IEC 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use Part 1.General requirements (Safetyrequire- ments) Note. GB 4793.1-2007 Safety requirements for electrical equipment for measurement, control and laboratory use Part 1.General requirements (IEC 61010-1.2001, IDT) IEC 61010-2-030 Safety requirements for electrical equipment for measurement, control and laboratory use Part 2-030.Test or measuring electrical equipment IEC 61340-4-6 Electrostatics Part 4-6.Standard test methods for wrist straps in specific applications (Electrostatics-Part IEC 61340-4-7 Electrostatics Part 4-7.Standard test methods for specific applications Ionization (Electrostatics-

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 charge decay chargedecay Charge migrates along or through the material surface, causing a reduction in charge density in the area where the charge is deposited or a reduction in surface potential. 3.2 charge decay time chargedecaytime The time required for a voltage to drop to a specific percentage of its initial value. Note. The specific percentages are generally. 1/e and 10% (e is the base of natural logarithms, approximately equal to 2.718). If the initial voltage is too low, then attenuation from the initial voltage

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 37977.21-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 37977.21-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 37977.21-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 37977.21-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.