GB/T 20111.5-2020 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 20111.5-2020: Electrical insulation systems--Procedures for thermal evaluation - Part 5: Applications with a designed life of 5 000 h or less Status: Valid
Basic dataStandard ID: GB/T 20111.5-2020 (GB/T20111.5-2020)Description (Translated English): Electrical insulation systems--Procedures for thermal evaluation - Part 5: Applications with a designed life of 5 000 h or less Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K15 Classification of International Standard: 29.080.30 Word Count Estimation: 10,181 Date of Issue: 2020-06-02 Date of Implementation: 2020-12-01 Quoted Standard: GB/T 20111.1; GB/T 20111.2; GB/T 20111.3; GB/T 20111.4; GB/T 20112 Adopted Standard: IEC 61857-31-2017, MOD Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration Summary: This standard specifies the thermal evaluation test procedure for electrical insulation systems (EIS) with a design life of 5 000 h and below. The test procedure follows the procedure specified in GB/T 20112, and the corresponding test procedure is selected according to the design life range. This standard applies to thermal assessment of electrical insulation systems with a design life of 5 000 h and below. GB/T 20111.5-2020: Electrical insulation systems--Procedures for thermal evaluation - Part 5: Applications with a designed life of 5 000 h or less---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. Electrical insulation systems--Procedures for thermal evaluation--Part 5.Applications with a designed life of 5 000 h or less ICS 29.080.30 K15 National Standards of People's Republic of China Thermal assessment procedures for electrical insulation systems-Part 5. Applications with a design life of 5000h and below 2020-06-02 released 2020-12-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee Table of contentsPreface Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Electrical insulation system (EIS) assessment 1 5 Samples and test equipment 2 6 Test procedure 2 7 Data analysis 3 8 Test report 3 Reference 4ForewordGB/T 20111 "Regulations for Thermal Evaluation of Electrical Insulation Systems" is divided into the following parts. ---Part 1.General requirements for low pressure; ---Part 2.Special requirements for general model applications for random winding; ---Part 3.Special requirements for encapsulated coil models, random winding electrical insulation system (EIS); ---Part 4.Guidelines for the selection of test methods for evaluation and classification of electrical insulation systems; ---Part 5.Applications with a design life of 5000h and below. This part is Part 5 of GB/T 20111. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part uses the redrafting method to modify and adopt IEC 61857-31.2017 ``Thermal Evaluation Regulations for Electrical Insulation System Part 31.Design Applications with a life expectancy of 5000h and below". The technical differences between this part and IEC 61857-31.2017 and the reasons are as follows. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Replace IEC 61857-1 (see Chapter 3, Chapter 4, 7.1) with GB/T 20111.1 equivalent to the international standard; ● Replace IEC 61857-21 (see 6.1) with GB/T 20111.2 which is equivalent to adopting international standards; ● Replace IEC 61857-22 (see 6.1) with GB/T 20111.3 which is equivalent to adopting international standards; ● Replace IEC /T R61857-2 (see Chapter 4, Chapter 5, 6.1, 6.3) with GB/T 20111.4 modified to adopt international standards; ● Replace IEC 60505 (see Chapter 1, 6.1, 6.3) with GB/T 20112, which is equivalent to the international standard; ---The scope of application of this part has been added to the scope of Chapter 1; --- Amend the title of Chapter 5 "Test Products" to "Test Products and Test Equipment" (see Chapter 5); --- In 6.3, add "The high temperature point should be 10K higher than the low temperature point" in order to select the temperature corresponding to the high temperature point and the low temperature point (see 6.3). This part was proposed by China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Standardization Technical Committee for Evaluation of Electrical Insulation Materials and Insulation Systems (SAC/TC301). Drafting organizations of this section. Suzhou Taihu Electrical New Materials Co., Ltd., Yantai Minstar Specialty Paper Co., Ltd., Dongying Xin Bang Electronic Technology Co., Ltd., Quality and Technical Supervision Standards and Coding Institute of Shunde District, Foshan City, Beijing Institute of Electrical Technology and Economics of Machinery Industry, Zhejiang Rongtai Technology Enterprise Co., Ltd., Suzhou Jufeng Electrical Insulation System Co., Ltd., Sichuan Dongcai Technology Group Co., Ltd., Suzhou Beide Technology Co., Ltd., China Guangdong Nuclear Power Delta (Taicang) Testing Technology Co., Ltd., Shanghai Beyan Testing Service Technology Co., Ltd., China China First Automobile Group Co., Ltd., Harbin Electric Power Equipment Co., Ltd. The main drafters of this section. Chen Hao, Wu Bin, Liu Yali, Sun Yanlei, Ba Yuxia, Baojie, Zhao Xiaochun, Zheng Minmin, Xia Yu, Ma Qingke, Hong Yan, Fang Jianguo, Li Jianxi, Ye Xianzhong, Cang Yan, Zhang Yanbiao.IntroductionGB/T 20111.1 specifies the general requirements and methods for assessing and grading electrical insulation systems (EIS). GB/T 20111.4 specifies guidelines for the selection of test methods for the evaluation and classification of electrical insulation systems (EIS). This section specifies the test procedures for thermal evaluation of electrical insulation systems (EIS) with a design life of 5000h and below. According to the application of the terminal product, a certain test procedure specified in this section can be selected. For electrical insulation systems (EIS) with a design life of more than 5000h, thermal evaluation can be performed according to GB/T 20111.2. Thermal assessment procedures for electrical insulation systems-Part 5. Applications with a design life of 5000h and below1 ScopeThis part of GB/T 20111 specifies the thermal evaluation test procedure for electrical insulation systems (EIS) with a design life of 5000h and below sequence. The test procedure follows the procedure specified in GB/T 20112, and the corresponding test procedure is selected according to the design life range. This section applies to the thermal evaluation of electrical insulation systems with a design life of 5000h and below.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 20111.1 Thermal Assessment Regulations for Electrical Insulation Systems Part 1.General Requirements Low Voltage (GB/T 20111.1-2015, IEC 61857-1.2008, IDT) GB/T 20111.2 Thermal Assessment Regulations for Electrical Insulation Systems Part 2.Special Requirements for General Models Application of Random Winding (GB/T 20111.2-2016, IEC 61857-21.2009, IDT) GB/T 20111.3 Thermal Evaluation Regulations for Electrical Insulation Systems Part 3.Special Requirements for Encapsulated Coil Models Air Insulation System (EIS) (GB/T 20111.3-2016, IEC 61857-22.2008, IDT) GB/T 20111.4 Thermal Evaluation Regulations for Electrical Insulation Systems Part 4.Evaluation and Classification of Test Methods for Electrical Insulation Systems Guidelines (GB/T 20111.4-2017, IEC /T R61857-2.2015, MOD) GB/T 20112 Evaluation and identification of electrical insulation systems (GB/T 20112-2015, IEC 60505.2011, IDT)3 Terms and definitionsThe following terms and definitions defined in GB/T 20111.1 apply to this document. 3.1 Design life Regardless of whether the work cycle is continuous or intermittent, the expected use time proposed or decided by the end user, manufacturer, etc. 3.2 Heat resistance The highest design temperature corresponding to the design life. 3.3 Average life span The average life span. 4 Evaluation of Electrical Insulation System (EIS) Procedure A (see Chapter 6) is suitable for evaluating electrical insulation systems (EIS) with a design life of 1500h and below, at least higher than the maximum design Under the condition of a temperature of 10K, a single temperature point heat aging is performed on a group of samples. The average life span of the tested sample should be at least 1500h. Procedure B (see Chapter 6) is applicable to the evaluation of electrical insulation systems (EIS) with a design life of 5000h and below. Under the condition of a temperature of 10K, a single temperature point heat aging is performed on a group of samples. To meet the design life of EIS, the aging time of program A Can be extended to 5000h. The average life of this group of evaluation samples should reach at least 1500h. Procedure C (see Chapter 6) is applicable to the evaluation of electrical insulation systems (EIS) with a design life of 5000h and below. At the temperature of 20K~30K and 30K~35K, the two sets of samples were thermally aged at two temperature points respectively. If additional thermal aging is started before the thermal aging specified in this part is completed, follow Procedure A, Procedure B, or Procedure described in Chapter 6. The test results obtained in Preface C can be extended to a more complete thermal assessment based on GB/T 20111.1~GB/T 20111.4.At this time, this part The thermal aging test can be used as a screening test for complete thermal aging. In addition, GB/T 20111.1 and GB/T 20111.4 may require hot reviews Must include a benchmark EIS to determine the relative heat resistance (RTE). When it is necessary to extend the thermal assessment, one should be added to the assessment of other applications Standard electrical insulation system (EIS) evaluated according to GB/T 20111.4 test method.5 Samples and test equipmentThe test product and test equipment should be determined according to the method described in GB/T 20111.4.6 Test procedure6.1 Procedure A (single temperature point thermal aging)---Determine the heat resistance of applications with a design life of 1500h and below According to the procedure of the selected test method, a test cycle includes the following items. ---Comply with the thermal aging sub-cycle specified in GB/T 20112; ---Conform to the conditions specified in GB/T 20111.4 to process sub-cycles, for example, can meet GB/T 20111.2 or GB/T 20111.3 Regulations; --- Determine the diagnostic test according to the test method selected in GB/T 20111.4.The selected aging temperature should be at least higher than the highest design The temperature is 10K. The average life span of the evaluated sample is at least 1500h. To ensure that the electrical insulation system (EIS) accumulates at least 1500h of life before breakdown, the aging sub-cycle should be 168h. Note. In fact, the aging cycle is 168h through the verification test of nine aging cycles and a cumulative life of at least 1500h. If a set of samples is aged beyond the original test time of 1500h, the test can be terminated when the target is reached, or thermal aging can be continued. To achieve a higher life assessment. 6.2 Procedure B (single temperature point thermal aging)---Determine the heat resistance of applications with a design life of 5000h and below Procedure A stipulates that the aging at a single temperature point can be extended to accumulate a longer aging time, which can be extended to 5000h at most. 6.3 Procedure C (Dual temperature point thermal aging)---Determine the heat resistance of applications with a design life of 5000h and below For the application of dual-temperature thermal aging, it is advisable to conduct cycle tests on two groups of electrical insulation systems (EIS) to be evaluated at two temperatures. A test cycle includes the following items. ---Comply with the thermal aging sub-cycle specified in GB/T 20112; --- Determine the diagnostic test according to the test method selected in GB/T 20111.4.The selection of temperature points can refer to the following regulations. ● The low temperature point should be 20K~30K higher than the expected maximum design temperature; ● The high temperature point should be 30K~35K higher than the expected maximum design temperature; ● The high temperature point should be 10K higher than the low temperature point.7 Data analysis7.1 Data analysis of procedure A and procedure B test Before reaching the specified cumulative time, the sample has not failed and the electrical insulation system (EIS) has not broken down to evaluate and determine the heat resistance class. The result of thermal aging at a single temperature point cannot be used as an extrapolation basis for inferring the heat resistance class. The electrical insulation system (EIS) undergoing thermal aging is losing Before it becomes effective, it needs to reach its expected life. If any sample fails before reaching the specified cumulative time, the average life (AL) of a group of samples should be used to determine the heat resistance (TE). Calculate the average life (AL) according to the procedure given in GB/T 20111.1. This section uses EISTEx/y to represent the heat resistance of the electrical insulation system (EIS) to be evaluated, where. x---The established heat resistance class (unit is ℃); y---the time corresponding to the level (unit is h). 7.2 Data analysis of procedure C test In order to establish the aging chart, a group of samples aged at a higher temperature should complete the test and reach the end of life, and the other group should be aged at a low temperature. For samples, the test can be completed or interrupted. When the high temperature point aging is completed and the low temperature point aging is terminated, TE is a conservative value. Using two sets of test data, plot them on the required time coordinate to get the corresponding life time. This section uses EISTEx/y to represent the heat resistance of the electrical insulation system (EIS) to be evaluated, where. x---The established heat resistance class (unit is ℃); y---the time corresponding to the level (unit is h).8 Test reportThe test report should include all records, relevant test information and data analysis, etc., at least including the following. ---The content of this part used; ---The process of electrical insulation system (EIS) test; ---Aging temperature and aging cycle; ---Test methods or stress levels used in the treatment of pre-diagnostic conditions and diagnostic tests of each electrical insulation system (EIS); ---The number of samples of each electrical insulation system (EIS) at each aging temperature; ---The method of obtaining the aging temperature (including the type of oven, etc.); ---If you need to specify, the air exchange rate; ---Terminal life time and failure mode of each sample; ---The logarithm average of the end-life time of each aging temperature; ---The relative heat resistance/heat class of the electrical insulation system (EIS) to be evaluated. references ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20111.5-2020_English be delivered?Answer: Upon your order, we will start to translate GB/T 20111.5-2020_English as soon as possible, and keep you informed of the progress. 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