GB/T 17948.4-2024 English PDFUS$554.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 17948.4-2024: Rotating electrical machines - Functional evaluation of insulation systems (Type II) - Procedures for form-wound windings - Electrical endurance qualification Status: Valid GB/T 17948.4: Historical versions
Basic dataStandard ID: GB/T 17948.4-2024 (GB/T17948.4-2024)Description (Translated English): Rotating electrical machines - Functional evaluation of insulation systems (Type II) - Procedures for form-wound windings - Electrical endurance qualification Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K20 Word Count Estimation: 28,210 Date of Issue: 2024-08-23 Date of Implementation: 2024-08-23 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 17948.4-2024: Rotating electrical machines - Functional evaluation of insulation systems (Type II) - Procedures for form-wound windings - Electrical endurance qualification---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. Rotating electrical machines - Functional evaluation of insulation systems (Type II) - Procedures for form-wound windings - Electrical endurance qualification Functional evaluation of the insulation structure of rotating electrical machines (Type II) Formed winding test procedures Electrical durability assessment Rotating electrical machines-Functional evaluation of insulation systems (Type Ⅱ)-Procedures for form-wound windings-Electrical endurance qualification (IEC 60034-18-32.2022, Rotating electrical machines-Part 18-32.Func﹘ tional evaluation of insulation systems (Type Ⅱ)-Electrical endurance qualification﹘ ation procedures for form-wound windings, IDT) ICS 29.160.01 CCS K20 National Standard of the People's Republic of China Replaces GB/T 17948.4-2016 Published on August 23, 2024, implemented on March 1, 2025 State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface ... Ⅲ Introduction ... V 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions 2 4 General Principles ... 2 5 samples ... 4 6 Electrical aging ... 4 7 Diagnosis by cycle ... 5 8 Failure of main insulation ... 6 9 Data functionality assessment ... 6 Appendix A (Normative) Main insulation reference life line when the manufacturer does not have a reference life line ... 14 Appendix B (Informative) Method for evaluating the groove conductive layer and the end anti-corona layer 15 References ... 18 Figure 1 shows the comparison of aging data between the qualified insulation structure to be evaluated (C) and the reference insulation structure (R) ... 7 Figure 2 shows the comparison of aging data between the unqualified insulation structure to be evaluated (C) and the reference insulation structure (R) ... 8 Figure 3 Comparison of simplified evaluation test data of four independent insulation structures to be evaluated and the reference insulation structure ... 9 Figure 4 Qualified insulation structures with the same voltage level and different expected service life ... 11 Figure 5 Qualified insulation structures with higher voltage levels and the same expected service life ... 12 Figure 6 Qualified insulation structures to be evaluated with different service life and voltage levels from the reference structure ... 13 Figure A.1 Main insulation reference life line ... 14 Figure B.1 Stator bar heating element 16 Figure B.2 Typical degradation traces of the conductive layer in the groove ... 17 Table 1 Identification conditions of structures to be evaluated ... 10 Table B.1 Relative test voltage and test temperature ... 16ForewordThis 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 is required. This document is Part 4 of GB/T 17948.GB/T 17948 has published the following parts. Functional assessment of the insulation structure of rotating electrical machines Test procedures for random-wound windings Thermal assessment and classification; Functional assessment of the insulation structure of rotating electrical machines Randomly wound winding test procedures Changes and classification of insulation component replacements; Functional assessment of insulation structures of rotating electrical machines Test procedures for formed windings Thermal assessment and classification of insulation structures of rotating electrical machines; Functional evaluation of the insulation structure of rotating electrical machines (Type II) Test procedures for formed windings Electrical durability evaluation; Functional evaluation of rotating electrical machine insulation structure Formed winding test procedures Thermal and electrical comprehensive stress durability Multi-factor evaluation; - Functional evaluation of insulation structures of rotating electrical machines Test procedures for formed windings Evaluation of the thermomechanical durability of insulation structures; General principles for the functional assessment of the insulation structure of rotating electrical machines. - This document replaces GB/T 17948.4-2016 "Test procedure for functional evaluation of insulation structure of rotating electrical machines - Formed windings - Voltage withstand Compared with GB/T 17948.4-2016, in addition to structural adjustments and editorial changes, the main technical changes are as follows. The scope of application of the standard has been changed (see Chapter 1, Chapter 1 of the.2016 edition); - Added terms and definitions such as "confidence interval" and "test temperature" (see Chapter 3, Chapter 3 of the.2016 edition); - The test procedures for aging tests have been modified and added (see Chapter 4 and Chapter 6 of the.2016 edition); - The structure and quantity of the test samples have been changed (see Chapter 5, Chapter 5 of the.2016 edition); - Changed the “Identification conditions for structures to be evaluated” (see Table 1, 4.2 of the.2016 edition); - Added “Qualified insulation structures to be evaluated with the same voltage level and different expected service life” (see Figure 4); - Added "qualified insulation structures with higher voltage levels and the same expected service life" (see Figure 5); - Added "Qualified insulation structures to be evaluated with different service life and voltage level from the reference structure" (see Figure 6); - Modified and added data functional assessment, added the performance of the insulation structure to be assessed and the reference insulation structure (see Chapter 9, Chapter 9 of the.2016 edition); Added "Main insulation reference life line when the manufacturer does not have a reference life line" (see Appendix A). - This document is equivalent to IEC 60034﹘18﹘32.2022 "Rotating electrical machines - Part 18﹘32.Functional assessment of insulation structures" (Type II) Electrical durability assessment procedures for formed windings. 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 "Functional Evaluation of Insulation Structure of Rotating Electrical Machines (Type II) Formed Winding Test Method" "Testing Procedure for Electrical Durability Assessment"; To be consistent with the main text, the normative reference IEC 60034﹘18﹘1.2010 is adjusted to IEC 60034﹘18﹘1.- 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 Rotating Electrical Machines (SAC/TC 26). This document was drafted by. Shanghai Electric Science Research Institute (Group) Co., Ltd., Suzhou Jufeng Electrical Insulation Systems Co., Ltd., Weiye Motor Co., Ltd., Anhui Wannan Electric Co., Ltd., Zhuhai Gree Electric Appliances Co., Ltd., Shanghai Motor System Energy Saving Engineering Technology Research Center Co., Ltd., SEW﹘ Motor (Suzhou) Co., Ltd., CRRC Zhuzhou Electric Co., Ltd., Shandong Ou Rui’an Electric Co., Ltd. Company, Shandong Zhaojin Group Co., Ltd., Shanghai Electrical Equipment Testing Institute Co., Ltd., Shenzhen Yueyangda Technology Co., Ltd., Dongfeng Electric Drive Power Systems Co., Ltd., Zhejiang Shiri Electromechanical Technology Co., Ltd., Jiamusi Electric Motor Co., Ltd., Zhejiang Dibei Electric Co., Ltd. Co., Ltd., Bomeric Investment (China) Co., Ltd., Lanzhou Electric Co., Ltd., Shandong Huali Electric Group Co., Ltd., Tongling Jingda Special Magnet Wire Co., Ltd., Suzhou Taihu Electric New Materials Co., Ltd., Cummins Generator Technology (China) Co., Ltd. Tianjin Baicheng Oilfield Production Equipment Manufacturing Co., Ltd., Shanghai Dianke Motor Technology Co., Ltd., Harbin Electric Group Advanced Motor Technology Co., Ltd. Technology Co., Ltd., Derui Precision (Shenzhen) Co., Ltd. The main drafters of this document are. Liu Rui, Zhang Shengde, Zhou Cheng, Gao Shuyu, Ke Lei, Hu Yusheng, Zhang Yunzhe, Xue Changzhi, Wu Zaichao, Zuo Mingming, Wang Shuangcan, Liu Youwen, Qi Liang, Wu Junjin, Luan Hua, Zhang Wei, Zhao Yudong. The previous versions of this document and the documents it replaces are as follows. First published in.2006 as GB/T 17948.4-2006, first revised in.2016; - This is the second revision. -IntroductionThe insulation structure of the rotating motor powered by the inverter is divided into type I and type II. Type I insulation structure is usually used for rated voltage less than 700 Vr.ms and tend to use random windings, which are not subject to partial discharge during their service life and under specified conditions; Type II is for the entire Formed windings where any part of the insulation structure is subjected to partial discharge during the service life (see IEC 60034﹘18﹘41 and GB/T 22720.2). Different parts of the insulation structure of rotating motor windings may have different dominant influencing factors, corresponding to a variety of evaluation criteria and Identification method. GB/T 17948 provides functional assessment and special test procedures for the insulation structure of rotating electrical machines, and is intended to consist of the following parts. Functional evaluation of the insulation structure of rotating electrical machines Test procedures for random-wound windings Thermal evaluation and classification. This standard specifies test procedures for thermal assessment and classification of insulation structures of randomly wound windings used or intended for use in rotating electrical machines. Functional evaluation of the insulation structure of rotating electrical machines - Changes to the test procedures for random-wound windings and classification of insulation component replacements. Specifies the thermal assessment and classification test procedures for changes in the insulation structure of randomly wound windings and replacement of insulation components. Functional assessment of the insulation structure of rotating electrical machines - Test procedure for formed windings - Thermal assessment and classification of the insulation structure of rotating electrical machines. To specify the test procedure for the thermal resistance of the insulation structure of AC or DC rotating electrical machines with indirect cooling and formed windings and classification, and provides thermal aging methods and diagnostic test procedures. Functional evaluation of the insulation structure of rotating electrical machines (Type II) Test procedure for formed windings Electrical durability evaluation. This standard specifies the test procedure for evaluating the electrical durability of the insulation structure of a formed-winding rotating electrical machine supplied with a sinusoidal power frequency voltage. Functional evaluation of rotating electrical machine insulation structure Formed winding test procedures Thermal and electrical comprehensive stress durability Multi-factor evaluation. The purpose is to specify the insulation structure of the formed winding used or intended for AC motors when subjected to thermal and electrical stress durability tests. Assessment procedures. Functional evaluation of insulation structures of rotating electrical machines Test procedure for formed windings Evaluation of the thermomechanical durability of insulation structures. Specifies the evaluation of the insulation structure of formed windings under thermal cycling. This durability is important for slender types (especially indirect cooling) and normal operation. This is particularly important for motors that experience considerable load changes during operation. General principles for functional evaluation of the insulation structure of rotating electrical machines. The purpose is to specify the requirements for the insulation structure of rotating electrical machines that are applied or to be applied to the specifications of GB/T 17948. General rules for the assessment of the functionality of the electrical insulation arrangements of rotating electrical machines within the range of 1000 to.2000 for the purpose of classifying them. Functional evaluation of the insulation structure of rotating electrical machines (Type II) Formed winding test procedures Electrical durability assessment1 ScopeThis document specifies the qualification procedure for the assessment of the electrical durability of the insulation structure of formed-wound rotating electrical machines supplied with sinusoidal power frequency voltage. For main insulation, this test procedure is essentially comparative, that is, the performance of the insulation structure to be evaluated is compared with the performance of the reference insulation structure confirmed by operating experience. If no reference insulation structure is available, use the diagram in Appendix A. The qualification procedure for the insulation structure of the inverter power supply forming winding is in GB/T 22720.2-2019 or IEC 60034﹘18﹘41.Appendix B proposes and defines new and informative anti-corona structure tests Regulations.2 Normative referencesThe 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. in this document. GB/T 17948.5-2016 Functional evaluation of insulation structure of rotating electrical machines, test procedures for formed windings, thermal and electrical comprehensive stress resistance Durability multi-factor assessment (IEC /TS 60034﹘18﹘33.2010, IDT) GB/T 22715-2016 Impulse withstand voltage level of stator coils of rotating AC motors (IEC 60034﹘15.2009, IDT) GB/T 22720.2-2019 Partial discharge resistant electrical insulation structure of rotating electrical machines powered by voltage type frequency converters (Type II) identification test (IEC 60034﹘18﹘42.2017, IDT) IEC 60034﹘1 Rotating electrical machines-Part 1.Rating and performance and performance Note. GB/T 755-2019 Ratings and performance of rotating electrical machines (IEC 60034﹘1.2017, IDT) IEC 60034﹘18﹘1 Rotating electrical machines Part 18﹘1.General principles for functional assessment of insulation structures chines-Part 18﹘1.Functional evaluation of insulation systems-General guidelines) Note. GB/T 17948.7-2016 General principles for functional evaluation of insulation structures of rotating electrical machines (IEC 60034﹘18﹘1.2010, IDT) IEC 60034﹘18﹘41 Rotating electrical machines Part 18﹘41.Rotating electrical machines powered by voltage type inverters without partial discharge (Type I) Identification and quality control test of gas-insulated structures [Rotating electrical machines-Part 18﹘41.Partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage convert﹘ ers-Qualification and quality control tests] Note. GB/T 22720.1-2017 Identification and application of electrical insulation structure of rotating electrical machines without partial discharge (Type I) powered by voltage-type frequency converters for rotating electrical machines Quality control test (IEC 60034﹘18﹘41.2014, IDT) IEC 60034﹘27﹘1 Rotating electrical machines Part 27﹘1.Off-line partial discharge measurements on winding insulation chines-Part 27﹘1： Off﹘line partial discharge measurements on the winding insulation） Note. GB/T 20833.1-2021 Rotating electrical machine winding insulation Part 1.Off-line partial discharge measurement (IEC 60034﹘27﹘1.2017, IDT IEC 60034﹘27﹘3 Rotating electrical machines - Measurement of dielectric loss factor of stator windings of rotating electrical machines machines-Part 27﹘3： Dielectric dissipation factor measurement on stator winding insulation of rotat﹘ ing electrical machines） ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 17948.4-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 17948.4-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 17948.4-2024_English with my colleagues?Answer: Yes. 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