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www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 18495-2025 English PDF

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GB/T 18495-2025: Resistance welding equipment - Transformers - Integrated transformers for welding guns
Status: Valid

GB/T 18495: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 18495-2025English354 Add to Cart 4 days [Need to translate] Resistance welding equipment - Transformers - Integrated transformers for welding guns Valid GB/T 18495-2025
GB/T 18495-2001English239 Add to Cart 3 days [Need to translate] Electric resistance welding -- Integrated transformers for welding guns Valid GB/T 18495-2001

Standard similar to GB/T 18495-2025

GB/T 51033   GB/T 50082   

Basic data

Standard ID GB/T 18495-2025 (GB/T18495-2025)
Description (Translated English) Resistance welding equipment - Transformers - Integrated transformers for welding guns
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J64
Classification of International Standard 25.160.30
Word Count Estimation 18,160
Date of Issue 2025-08-01
Date of Implementation 2026-02-01
Older Standard (superseded by this standard) GB/T 18495-2001
Issuing agency(ies) State Administration for Market Regulation, Standardization Administration of China

GB/T 18495-2025: Resistance welding equipment - Transformers - Integrated transformers for welding guns


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT18495-2025
ICS 25.160.30 CCSJ64 National Standard of the People's Republic of China Replaces GB/T 18495-2001 Resistance welding equipment transformer Transformer integrated with welding clamp (ISO 10656.2016, IDT) Released on August 1, 2025 Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Transformer dimensions and electrical characteristics 1 5 Additional Equipment 6 5.1 Grounding measures 6 5.2 Thermal Protection 6 5.3 Output Current Sensing Coil 6 6 Mark 7 6.1 General 7 6.2 Nameplate 7 6.3 External surface color 7 7 Logo 8 8 Test conditions 8 8.1 General Principles 8 8.2 Type test 8 8.3 Fever test 9 Appendix A (Informative) Relationship between Secondary Current and Duty Cycle 10 Reference 11 Preface 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 replaces GB/T 18495-2001 "Resistance welding and welding clamp integrated transformer" and is consistent with GB/T 18495-2001. In addition to structural adjustments and editorial changes, the main technical changes are as follows. --- Changed the types, sizes and electrical characteristics of 50 Hz and 60 Hz transformers (see Chapter 4, Chapter 3 of the.2001 edition); --- Changed the dimensioning of Figures 1 to 4 (see Chapter 4, Chapter 4 of the.2001 edition); --- Added the index number description of Figures 1 to 5 (see Chapter 4); --- Added requirements for steel threaded bushings (see Chapter 4); --- Changed the thermal protection requirements and quoted GB/T 25301-2021 (see 5.2, 5.2 of the.2001 edition); --- Changed the requirements for output current measuring devices and quoted GB/T 25301-2021 (see 5.3, 5.3 of the.2001 edition); --- Changed the outer surface color requirements for 50Hz and 60Hz transformers (see 6.3, 6.2 of the.2001 edition); --- Deleted the transportation requirements (see Chapter 7 of the.2001 edition); --- Added the judgment criteria for mechanical strength test (see 8.2.1); --- Deleted the test requirements for current measuring devices (see 9.2 of the.2001 edition); --- Deleted the insulation test requirements for temperature switches (see 9.3 of the.2001 edition); --- Deleted the dielectric strength test requirements (see 9.4 of the.2001 edition). This document is equivalent to ISO 10656.2016 "Resistance welding equipment transformers and integrated welding clamp transformers". A new chapter “Terms and Definitions” has been added to this document. 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 is proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Welding Machines (SAC/TC70). This document was drafted by. Tianjin Qisuo High-tech Co., Ltd., Chengdu Sanfang Electric Co., Ltd., Nanjing Fister Welding Technology Co., Ltd. Yongkang Jiaxiao Welding Automation Equipment Co., Ltd., Dongguan Pengyuwei Technology Co., Ltd., Chengdu Xinwei Welding Technology Co., Ltd., Gaobeidian Chengtai Welding Equipment Co., Ltd., Jinzhou Shenghe Technology Electronics Co., Ltd., Shenzhen Hongbai Technology Industrial Co., Ltd., Jiangsu Zhenan Equipment Technology Co., Ltd., Huandian Intelligent Control Technology (Guangdong) Co., Ltd., Nanjing Estun Electric Co., Ltd., Tianjin Shangke CNC Technology Co., Ltd., Amotai Industrial Automation (Nanjing) Co., Ltd., Yueqing Zhenan Pneumatic Welding Gun Co., Ltd., Fuswei Technology (Jiashan) Co., Ltd., China Quality Certification Center Co., Ltd. The main drafters of this document are. Shi Tao, Yang Yijun, Tang Zhengwei, Cheng Haojian, Jin Jianguo, Yang Yongjia, Shi Xuemin, Zhou Yichun, Han Peiwen, Li Feng, Liu Jianlong, He Zhijun, Nie Lanmin, Chen Jinlong, Chen Long, Li Jizhong, and Zheng Haifeng. This document was first published in.2001 and this is the first revision. Resistance welding equipment transformer Transformer integrated with welding clamp

1 Scope

This document specifies the additional requirements for single-phase transformers for AC welding in GB/T 25301-2021. 2021, some technical conditions in GB/T 25301-2021 are supplemented.

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 25301-2021 Resistance welding equipment transformers General technical conditions for all transformers (ISO 5826. 2014, IDT) Note. GB/T 5465.2-2023 Graphical symbols for electrical equipment Part 2.Graphical symbols (IEC 60417 Database. 2023-03, IDT)

3 Terms and Definitions

There are no terms or definitions that require definition in this document.

4 Transformer dimensions and electrical characteristics

The size and electrical characteristics of the transformer should comply with. Table 1 is applicable to 50Hz transformers; Table 2 is applicable to 60Hz transformers; Figures 1 and 2 apply to H-type transformers; Figures 3 and 4 apply to J-type transformers. The cooling water flow rate is 4L/min. The load duration of the transformer shall not exceed 20% (see Appendix A). Table 1 Type, length, and electrical characteristics of 50Hz transformers Type a AC no-load voltage U20 full length l1max mm Distance between mounting holes l2 mm Minimum continuous output current I2P kA Mass (approximate) kg H 4.5 245 170 4 18 H 5.6 270 170 4 23

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