GB/T 22718-2008 English PDF

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GB/T 22718-2008: Thermal evaluation methods of insulation systems for high-voltage electrical machines
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22718-2008	229	Add to Cart	3 days	Thermal evaluation methods of insulation systems for high-voltage electrical machines	Valid

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Basic data

Standard ID: GB/T 22718-2008 (GB/T22718-2008)
Description (Translated English): Thermal evaluation methods of insulation systems for high-voltage electrical machines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K20
Classification of International Standard: 29.160.30
Word Count Estimation: 10,173
Date of Issue: 2008-12-30
Date of Implementation: 2009-10-01
Quoted Standard: GB/T 11021-2007; GB/T 11026.4-1999; GB/T 17948-2003; GB/T 17948.3-2006; JB/T 1544-1999; JB/T 9238-1999
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2008 (No. 136 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the 3kV and above high-voltage motor insulation heat resistance evaluation method. This standard specifies the method is based on the assessment of heat structures were tested with actual operating experience with reference to the structure in the same experimental conditions is relatively based. This standard applies to 3kV and above voltage level three-phase AC motor insulation structure rotating Thermal evaluation.

GB/T 22718-2008: Thermal evaluation methods of insulation systems for high-voltage electrical machines

---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.
Thermal evaluation methods of insulation systems for high-voltage electrical machines ICS 29.160.30 K20 National Standards of People's Republic of China High-voltage electrical insulation Thermal evaluation method Posted 2008-12-30 2009-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is an informative annex. The standard proposed by China Electrical Equipment Industrial Association. The standard rotary motor by the National Standardization Technical Committee (SAC/TC26) centralized. This standard is drafted by. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shandong Qilu Motor Manufacturing Co., Ltd., Shanghai Electric Branch Motor Co., Ltd., Jiangmen City, Jiang Sheng Motor Co., Ltd., Zhejiang Jinlong Electrical Machinery Co., Ltd., Suzhou Jufeng Insulation materials Limited. Participated in the drafting of this standard. Harbin Electrical Machinery Plant AC and DC motor limited liability company, Guilin Institute of Electrical Science. The main drafters. Zhang Shengde, Li Jinliang, Rong Weikang, Zhang Fei, Wang Peng, Liu Quan, leaf, Xu Weihong, in Long Ying, Fang Jianguo. This standard is the first release. High-voltage electrical insulation Thermal evaluation method

1 Scope

This standard specifies the above 3kV high voltage electrical insulation and heat resistance evaluation methods. Thermal evaluation method specified in this standard is In the test configuration and the reference configuration is practical operating experience under the same test conditions based on relatively. This standard applies to the evaluation of the heat insulation voltage 3kV and above the three-phase AC electric rotating machines.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 11021-2007 heat resistance, electrical insulation rating (IEC 60085.2004, IDT) GB/T 11026.4-1999 determine the electrical insulation material heat resistance guide - Part 4. Ageing ovens - Single - chamber ovens (Idt IEC 60216-4-1.1990) GB/T 17948-2003 rotating electrical machines - Functional evaluation of insulation General (IEC 60034-18-1.1992, IDT) GB/T 17948.3-2006 rotating electrical machines - Functional evaluation of insulation windings Test procedures 50MVA, 15kV and The following motor insulation thermal evaluation and classification (IEC 60034-18-31.1992, IDT) JB/T 1544-1999 and electrical insulating varnish varnished rapid thermal aging methods --- Hot Key slope method JB/T 9238-1999 industrial thermocouple technical conditions 3 10.5 k Vp and below high-voltage motor coil insulation ring Thermal evaluation method 3.1 Sample 3.1.1 Sample structure Sample loop coil can be used on the actual motor may be a model coil or bar. If the model coil, it must be able to reflect The basic characteristics of the actual coil combination. According to the present standard coil sample assessment, insulation materials and components of its use, it should first be properly screened. It should be noted A single element of insulation and heat level is not equal to the heat-resistant grade insulation structure. Appendix A is a typical model coil assembly diagram, this coil size model commonly used in the assessment of 50MVA, 15kV and below High-voltage electrical insulation. 3.1.2 Number of samples In order to obtain statistically valid data on each of the insulating structure at each aging temperature should adopt a sufficient number of samples aging test Inspection, the amount can not be less than five. 3.1.3 Quality Assurance Test Before the start of the first heat aging-minute period, to deal with the appearance of the sample was visually observed on inspection and pressure test, only a test by checking Thus, in order to put the heat aging test. 3.1.4 The initial diagnostic test Before the start of the first heat aging-minute period, each complete test should be carried out all the testing procedures specified diagnostic tests. 3.2 Thermal aging test 3.2.1 aging temperature and test cycle Heat aging sample temperature should be at least three points. Electrical insulating heat resistant grade are shown in Table 1 (GB/T 11021-2007). ......

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