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GB/T 4074.4-2024: Test methods of winding wires - Part 4: Chemical properties
Status: Valid GB/T 4074.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4074.4-2024 | English | 354 |
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Test methods of winding wires - Part 4: Chemical properties
| Valid |
GB/T 4074.4-2024
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| GB/T 4074.4-2008 | English | 519 |
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Winding wires -- Test methods -- Part 4: Chemical properties
| Obsolete |
GB/T 4074.4-2008
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| GB/T 4074.4-1999 | English | 519 |
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Test methods for winding wires-- Part 4: Chemical properties
| Obsolete |
GB/T 4074.4-1999
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| GB/T 4074.4-1983 | English | RFQ |
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Methods of test for enameled wires--Springness test--Round wires
| Obsolete |
GB/T 4074.4-1983
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PDF similar to GB/T 4074.4-2024
Basic data | Standard ID | GB/T 4074.4-2024 (GB/T4074.4-2024) | | Description (Translated English) | Test methods of winding wires - Part 4: Chemical properties | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K12 | | Classification of International Standard | 29.060.10 | | Word Count Estimation | 18,118 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 4074.4-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 4074.4-2024: Test methods of winding wires - Part 4: Chemical properties---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 29:060:10
CCSK12
National Standards of People's Republic of China
Replaces GB/T 4074:4-2008
Winding wire test methods
Part 4: Chemical properties
(IEC 60851-4:2016, Winding wires-Test methods-
Part 4: Chemical properties, IDT)
Released on 2024-04-25
2024-11-01 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 Test Method 12: Solvent Resistance 1
4:1 Overview 1
4:2 Test equipment 2
4:3 Test Procedure 2
5 Test method 16: Refrigerant resistance 3
5:1 Overview 3
5:2 Extraction 3
5:3 Breakdown voltage 6
6 Test method 17: Direct solderability 6
6:1 Overview 6
6:2 Test equipment 7
6:3 Test procedures 7
7 Test Method 20: Hydrolysis and transformer oil resistance 8
7:1 Overview 8
7:2 Round wire 8
7:3 Flat wire 9
Appendix A (Informative) Alternative refrigerants to chlorodifluoromethane 11
Reference 12
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 4 of GB/T 4074 "Test methods for winding wires": GB/T 4074 has been published in the following parts:
--- Part 1: General provisions;
--- Part 2: Dimensional measurement;
--- Part 3: Mechanical properties;
--- Part 4: Chemical properties;
--- Part 5: Electrical properties;
--- Part 6: Thermal properties;
--- Part 7: Test method for determining the temperature index of enameled winding wire;
--- Part 8: Test method for determination of temperature index of enameled winding wire - Rapid method;
--- Part 21: High frequency pulse voltage resistance:
This document replaces GB/T 4074:4-2008 "Test methods for winding wires Part 4: Chemical properties" and is compatible with GB/T 4074:4-2008
Compared with the previous version, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
--- Added general principles for refrigerant resistance test (see 5:1);
--- Added other refrigerants in the refrigerant resistance test (see 5:1);
--- Changed the test procedure for refrigerant resistance test (see 5:2:4, 4:1:4 of the:2008 edition);
--- Added an overview of direct solderability test (see 6:1);
--- Changed the free length between the holding points in the direct solderability test equipment (see 6:2, 5:1 of the:2008 edition);
--- Deleted the sample preparation for direct solderability test (see 5:2 in the:2008 edition);
--- Added an overview of hydrolysis resistance and transformer oil resistance tests (see 7:1);
--- Changed the test equipment in "hydrolysis resistance and transformer oil resistance test" (see 7:2:1, 6:1:1 of the:2008 edition);
--- Changed the test procedure for hydrolysis resistance of flat wire (see 7:3:3:1, 6:2:3:1 of the:2008 edition):
This document is equivalent to IEC 60851-4:2016 "Test methods for winding wires - Part 4: Chemical properties":
A new chapter “Terms and Definitions” has been added to this document:
The following minimal editorial changes were made to this document:
--- In order to coordinate with the existing standards, the name of the standard is changed to "Test methods for winding wires Part 4: Chemical properties":
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 China Electrical Equipment Industry Association:
This document is under the jurisdiction of the National Technical Committee for Standardization of Wire and Cable (SAC/TC213):
This document was drafted by: Shanghai Cable Research Institute Co:, Ltd:, Datong (Fujian) New Materials Co:, Ltd:, Xiandeng Hi-Tech Electric Co:, Ltd:
Co:, Ltd:, Shanghai Yusheng Special Wire Co:, Ltd:, Jiangsu Jiahe Electronic Materials Co:, Ltd:, Ningbo Jintian New Materials Co:, Ltd:, Guangdong Wei
Qi Electrical Materials Co:, Ltd:, Shanghai Guolan Testing Co:, Ltd:, and Shanghai Yangtong Electrical Equipment Co:, Ltd:
The main drafters of this document are: Xie Li, Zheng Ying, Liu Wei, Tang Haifeng, Wang Chengyi, Li Jun, Xue Feng, Pan Guoliang, Zhang Yanfeng, Li Jiaxing, Zhu Ranran,
Li Fu:
The previous versions of the documents replaced by this document are as follows:
---First published in:1999 as GB/T 4074:4-1999;
---2008 was the first revision;
---This is the second revision:
Introduction
Winding wire is one of the main raw materials for power, motor, electrical appliances, home appliances, electronics, communications, transportation, power grid, aviation and other fields:
It has a wide range and covers many fields, and has become an important mechanical industrial product:
GB/T 4074 Winding Wire Test Methods is the only test method standard for measuring winding wire products in China: It is very important for product testing and market regulation:
It plays an important role in both market and product improvement:
GB/T 4074 aims to establish the test method standards for the performance of different types of winding wire products and is intended to consist of the following 9 parts:
--- Part 1: General provisions: The purpose is to establish the terms, definitions and general test principles for winding wire test methods:
--- Part 2: Dimensional measurement: The purpose is to establish test methods for measuring the dimensions of different products of winding wire:
--- Part 3: Mechanical properties: The purpose is to establish test methods for the mechanical properties of different types of winding wire products:
--- Part 4: Chemical properties: The purpose is to establish the test methods for the chemical properties of different types of winding wire products:
--- Part 5: Electrical properties: The purpose is to establish test methods for the electrical properties of different types of winding wire products:
--- Part 6: Thermal properties: The purpose is to establish test methods for the thermal properties of different types of winding wire products:
--- Part 7: Test method for determining the temperature index of enameled winding wire: The purpose is to establish a method for determining the temperature index of enameled winding wire:
Test procedures:
--- Part 8: Test method for determining the temperature index of enameled winding wire: Rapid method: The purpose is to establish the determination of the temperature index of enameled winding wire:
Rapid test procedure for the sensitivity index:
--- Part 21: High-frequency impulse voltage resistance performance: The purpose is to establish the test method for the high-frequency impulse voltage resistance performance of winding wires:
Winding wire test methods
Part 4: Chemical properties
1 Scope
This document describes the following test methods for winding wires:
---Test method 12: Solvent resistance
---Test method 16: Refrigerant resistance
---Test method 17: Direct solderability
---Test method 20: Transformer oil resistance
For terms, definitions, general principles for test methods and a catalogue of test methods for winding wires, see IEC 60851-1:
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 4074:3-2024 Winding wire test methods Part 3: Mechanical properties (IEC 60851-3:2023, IDT)
Note: There is no technical difference between the referenced content of GB/T 4074:3-2024 and the referenced content of IEC 60851-3:2009:
GB/T 4074:5-2024 Winding wire test methods Part 5: Electrical properties (IEC 60851-5:2019, IDT)
Note: There is no technical difference between the referenced content of GB/T 4074:5-2024 and the referenced content of IEC 60851-5:2008:
Note: GB/T 20422-2018 Lead-free solder (ISO 9453:2014, MOD)
Note: GB 2536-2011 Unused mineral insulating oils for electrical fluid transformers and switches (IEC 60296:2003, MOD)
Note: GB/T 20628:1-2006 Specification for cellulose paper for electrical use Part 1: Definitions and general requirements (IEC 60554-1:1977, MOD)
3 Terms and definitions
There are no terms or definitions that require definition in this document:
4 Test Method 12: Solvent Resistance
4:1 Overview
This test is applicable to enameled round wire and enameled rectangular wire with a conductor nominal diameter greater than 0:250 mm:
This test is not applicable to enameled round wires with a nominal conductor diameter less than or equal to 0:250 mm:
Solvent resistance is expressed by the pencil hardness of the enameled wire after solvent treatment:
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