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GB/T 997-2022: Classification of types of construction, mounting arrangements and terminal box position (IM Code) for rotating electrical machines Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 997: Historical versions
GB/T 997-2022: Classification of types of construction, mounting arrangements and terminal box position (IM Code) for rotating electrical machines---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/GBT997-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.160.01 CCS K 20 GB/T 997-2022 / IEC 60034-7:2020 Replacing GB/T 997-2008 Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code) for Rotating Electrical Machines [IEC 60034-7:2020, Rotating Electrical Machines – Part 7: Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code), IDT] ISSUED ON: OCTOBER 12, 2022 IMPLEMENTED ON: MAY 01, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative References ... 5 3 Terms and Definitions ... 5 4 Code I (Alpha-Numeric Designation) ... 7 4.1 Designation of machines with horizontal shafts ... 7 4.2 Designation of machines with vertical shafts ... 9 4.3 Terminal box location ... 12 5 Code II (All-Numeric Designation) ... 13 5.1 Designation ... 13 5.2 Significance of the first numeral ... 13 5.3 Significance of the fourth numeral ... 13 5.4 Significance of the second and third numerals ... 14 5.5 Terminal box location ... 23 5.6 Examples of designations ... 23 5.7 Inclination or declination of shaft ... 24 Annex A (Informative) Relationship between Code I and Code II ... 25 Bibliography ... 27ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1: Rules for the Structure and Drafting of Standardizing Documents. This Document replaced GB/T 997-2008 Rotating Electrical Machines - Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code). Compared with GB/T 997-2008, the major technical changes of this Document are as follows besides the structural adjustments and editorial modifications: --- Delete the repeated description of the location of the junction box in Code 2 (see 3.5 of the 2008 Edition); --- Add the representation of the IM code when the shaft has an inclination angle (see 5.7 of this Edition). This Document equivalently adopted IEC 60034-7:2020 Rotating Electrical Machines – Part 7: Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code). This Document made the following minimum editorial modifications: --- In order to coordinate with the existing standards, change the standard name into Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code) for Rotating Electrical Machines. --- Revise the original typos in Tables 6 ~ 14 from “see 3.5” to “see 5.6”. Please note some contents of this Document may involve patents. The issuing agency shall not assume the responsibility to identify these patents. This Document was proposed by China Electric Equipment Industry Association. This Document shall be under the jurisdiction of National Technical Committee on Electric Rotating Machinery of Standardization Administration of China (SAC/TC 26). Drafting organizations of this Document: Shanghai Engineering Research Center of Motor System Energy Saving Co., Ltd.; Jiangsu Jiaxuan Intelligent Industrial Technology Co., Ltd.; Wolong Electric Group Co., Ltd.; Machinery Industry Beijing Electrotechnical Institute of Economic Research; Special Equipment Safety Supervision Inspection Institute of Jiangsu Province (National Center of Supervision and Inspection on Product Quality of Overhead Gantry Crane Machinery); Jimusi Electric Machine Co., Ltd.; Jiangsu Xi’anda Explosion-Proof Co., Ltd.; CRRC Yongji Electric Co., Ltd.; Shandong Huali Electric Motor Group Co., Ltd.; Xi’an Xima Electric Motor Co., Ltd.; Guangdong Dongguan Electric Motor Co., Ltd.; Jiang Chao Motor Technology Co., Ltd.; Nanyang Weite Explosion-Proof Motor Co., Ltd.; Kungfu Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code) for Rotating Electrical Machines1 ScopeThis Document specifies the IM Code, a classification of types of construction, mounting arrangements and the terminal box position of rotating electrical machines. Two systems of classification are provided as follows: – Code I (see Clause 4): An alpha-numeric designation applicable to machines with endshield bearing(s) and only one shaft extension. – Code II (see Clause 5): An all-numeric designation applicable to a wider range of types of machines including types covered by Code I. The type of machine not covered by Code II is fully described in words. The relationship between Code I and Code II is given in Annex A.2 Normative ReferencesThere are no Normative References in this Document.3 Terms and DefinitionsFor the purposes of this Document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1 Type of construction Arrangement of machine components with regard to fixings, bearing arrangement and shaft ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 997-2022 be delivered?Answer: The full copy PDF of English version of GB/T 997-2022 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 997-2022_English with my colleagues?Answer: Yes. 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