GB/T 3953-2024
Electrician round copper wire (English Version)
- Standard No.
- GB/T 3953-2024
- Language
- Chinese, Available in English version
- Release Date
- 2024
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China CN / GB
- Latest
- GB/T 3953-2024
- Replace
- GB/T 3953-2009
- Introduction
In-depth interpretation of GB/T 3953—2024 National Standard for Electrical Round Copper Wire
1. Analysis of standard background and technological evolution
GB/T 3953—2024 National Standard for Electrical Round Copper Wire is an important update after the 2009 version. It is a comprehensive revision of the technical requirements and test methods for round copper wires used in wires and cables, motors and electrical and electronic devices. This revision adds terms and definitions, refines the models, specifications and technical indicators of different types of round copper wires, and puts forward higher requirements for key parameters such as surface quality and dimensional deviation.
2. Comparison of standard frameworks
Standard dimensions GB/T 3953—2009 GB/T 3953—2024 Technical requirements Basically covers the technical parameters of round copper wire. Added and refined the technical indicators of Class 1 soft and hard round copper wire, and added classification requirements for tensile strength and elongation. Test methods Provide basic test procedures. Optimized the calculation parameters and measurement methods, and introduced more precise measurement equipment requirements. Delivery and acceptance rules Specify basic delivery conditions. Specify the proportion of short-segment delivery, and refine the inspection requirements for paralleling structures and small-sized round copper wires.
3. Implementation suggestions
Case 1: Manufacturing and inspection of small-sized round copper wires
For TR-type soft round copper wires with a nominal diameter less than 0.05mm, manufacturers should strictly measure the cross-sectional area in accordance with Clause 5.4.2 of GB/T4909.2-2009, and calculate the diameter deviation through the formula. It is recommended to use a high-precision microscope to assist in inspection to ensure that the product meets the deviation requirement of ±0.001mm.
In actual applications, this type of round copper wire is often used in precision electronic equipment, and its surface quality directly affects the conductive performance. Manufacturers should establish strict quality control processes to avoid burrs and adhesion defects.
GB/T 3953-2024 Referenced Document
- GB/T 3048.2-2007 Test methods for electrical properties of wires and cables - Part 2: Tests for resistivity of metallic materials
- GB/T 4909.1-2009 Test methods for bare wires.Part 1:General
- GB/T 4909.2 Test methods for bare wires.Part 2:Measurement of dimensions
- GB/T 4909.2-2009 Test methods for bare wires.Part 2:Measurement of dimensions
- GB/T 4909.3 Test methods for bare wires.Part 3:Tensile test
- GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 3953-2024 history
- 2024 GB/T 3953-2024 Electrician round copper wire
- 2009 GB/T 3953-2009 Round copper wire for electrical purposes
- 1983 GB/T 3953-1983 Round copper wire for electrical purposes
