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GB/T 4074.5-2024: Test methods of winding wires - Part 5: Electrical properties
Status: Valid GB/T 4074.5: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4074.5-2024 | English | 594 |
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Test methods of winding wires - Part 5: Electrical properties
| Valid |
GB/T 4074.5-2024
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| GB/T 4074.5-2008 | English | 719 |
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Winding wires -- Test methods -- Part 5: Electrical properties
| Obsolete |
GB/T 4074.5-2008
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| GB/T 4074.5-1999 | English | 559 |
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Test methods for winding wires --Part 5: Electrical properties
| Obsolete |
GB/T 4074.5-1999
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| GB/T 4074.5-1983 | English | RFQ |
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Methods of test for enameled wires--Springness test--Rectangular wires
| Obsolete |
GB/T 4074.5-1983
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PDF similar to GB/T 4074.5-2024
Basic data | Standard ID | GB/T 4074.5-2024 (GB/T4074.5-2024) | | Description (Translated English) | Test methods of winding wires - Part 5: Electrical properties | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K12 | | Classification of International Standard | 29.060.10 | | Word Count Estimation | 30,378 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 4074.5-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 4074.5-2024: Test methods of winding wires - Part 5: Electrical 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 4074:5-2008
Winding wire test methods
Part 5: Electrical properties
(IEC 60851-5:2019, Winding wires-Test methods-
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 V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Test Method 5: Resistance 1
5 Test method 13: Breakdown voltage 2
5:1 Test Principle 2
5:2 Test equipment 2
5:3 Enameled round wire 3
5:4 Enameled round wire with a conductor nominal diameter greater than 0:100 mm and less than or equal to 2:500 mm and insulation thickness of grade 1 to 3
5:5 Round wire with a conductor nominal diameter greater than 2:500 mm 6
5:6 Silk covered round wire 7
5:7 Flat wire 9
6 Test method 14: Paint film continuity (applicable to enameled round wire and film wrapped round wire) 9
6:1 Overview 9
6:2 Low voltage continuity test (conductor nominal diameter less than or equal to 0:050 mm, insulation thickness is level 1 to level 3) 9
6:3 High voltage continuity test (conductor nominal diameter greater than 0:050 mm and less than or equal to 1:600 mm, insulation thickness is Class 1
To 3, the conductor nominal diameter is greater than 0:035mm and less than or equal to 1:600mm, and the insulation thickness is FIW3 to
FIW9) 10
6:4 Online high voltage continuity test (conductor diameter greater than 0:035mm and less than or equal to 1:600mm, insulation thickness FIW3 grade
to FIW10) 15
7 Test method 19: Dielectric loss factor tgδ (applicable to enameled wire and bundled wire) 17
7:1 Test Principle 17
7:2 Test equipment 17
7:3 Sample preparation 18
7:4 Test procedure 18
7:5 Test results 18
8 Test method 23: Pinhole test 18
Appendix A (Normative) Loss Factor Method 19
A:1 Tangent angle-intersection point 19
A:2 Test method 19
A:3 Test results analysis 20
Reference 22
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 5 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 4074:5-2008 "Winding wire test methods Part 5: Electrical properties" and is consistent with GB/T 4074:5-2008:
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
--- Changed some test equipment in the breakdown voltage test (see 5:2, 4:2 of the:2008 edition);
--- Changed the enameled round wire test method and clarified the insulation thickness of the product (see 5:3:1, 4:3 of the:2008 edition);
--- Added the insulation thickness enameled round wire breakdown voltage test method (see 5:3:2);
--- Added an overview of the paint film continuity test (see 6:1);
--- Changed the specification range of the low-voltage continuity test in the paint film continuity test (see 6:2, 5:1 of the:2008 edition);
--- Changed the specification range of the high voltage continuity test in the paint film continuity test (see 6:3, 5:2 of the:2008 edition);
--- Added the graphite brush electrode principle in the high voltage continuity test (see 6:3:1);
--- Added graphite fiber brush electrode assembly in high voltage continuity test (see 6:3:2, 5:2:2 of the:2008 edition);
--- Added online high voltage continuity test (see 6:4):
This document is equivalent to IEC 60851-5:2019 "Winding wire test methods Part 5: Electrical 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 "Winding Wire Test Methods Part 5: Electrical 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:, Jiangsu Datong Electromechanical Co:, Ltd:, Changsha Xianghong Instrument Machinery Co:, Ltd:,
Wuxi Xizhou Electromagnetic Wire Co:, Ltd:, Jufeng Electrical Materials (Yangzhou) Co:, Ltd:, Shanghai Guolan Testing Co:, Ltd:, Shanghai Shenmao Electromagnetic
Wire Co:, Ltd:, Zhuhai Rongsheng Ultrafine Wire Co:, Ltd:, and Roshow Technology Co:, Ltd:
The main drafters of this document are: Li Fu, Xiao Xianxiong, Liang Xuehao, Zhang Bin, Cai Lin, Zhu Ranran, Gu Xinjian, Feng Zhongtai, Zhang Dongxu, Wang Wanzhong,
Pan Guoliang and Zhang Zhao:
The previous versions of this document and the documents it replaces are as follows:
---First published in:1999 as GB/T 4074:5-1999;
---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 is the only test method standard for measuring winding wire products in China, which is of great significance to product testing, market regulation and product improvement:
Play an important role:
GB/T 4074 "Test methods for winding wires" aims to establish the test method standards for the performance of different types of winding wire products:
Partial composition:
--- 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 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 5: Electrical properties
1 Scope
This document describes the following test methods for winding wires:
--- Test method 5: Resistance;
--- Test method 13: Breakdown voltage;
--- Test method 14: Paint film continuity;
--- Test method 19: Dielectric loss factor;
--- Test method 23: Pinhole test;
For terms, definitions, general principles of test methods and catalogue of test methods for winding wires, please refer to 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:
IEC 60851-1 Winding Wires-Test Methods-Part 1: General
General
Note: GB/T 4074:1-2024 Winding wire test methods Part 1: General provisions (IEC 60851-1:2021, IDT)
3 Terms and definitions
There are no terms or definitions that require definition in this document:
4 Test Method 5: Resistance
Resistance is the DC resistance of 1m long winding wire at 20℃:
The measurement accuracy of the test method used should be 0:5%:
For bundled cables, their length should not exceed 10m, and both ends should be soldered before measurement:
When using a cable with a length of 10 m, use a cable with a length of 10 m:
If the resistance Rt is measured at temperature t instead of 20°C, the resistance R20 at 20°C should be calculated as follows:
R20=
1 α(t-20)
Where:
t---actual Celsius temperature during measurement, in degrees Celsius (℃);
α---temperature coefficient, the unit is negative first power (K-1):
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