GB/T 1971-2021 PDF EnglishUS$440.00 · In stock · Download in 9 seconds
GB/T 1971-2021: Rotating electrical machines - Terminal markings and direction of rotation 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 1971: Historical versions
Similar standardsGB/T 1971-2021: Rotating electrical machines - Terminal markings and direction of rotation---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/GBT1971-2021GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.160.01 CCS K 20 GB/T 1971-2021 / IEC 60034-8.2014 Replacing GB/T 1971-2006 Rotating Electrical Machines – Terminal Markings and Direction of Rotation (IEC 60034-8.2014, Rotating Electrical Machines – Part 8.Terminal Markings and Direction of Rotation, IDT) Issued on. OCTOBER 11, 2021 Implemented on. MAY 01, 2022 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 Symbols... 7 5 Direction of Rotation... 9 6 Rules for Terminal Markings... 9 7 Auxiliary Terminal Marking Rules... 21 Annex A (Normative) Connection Diagrams for Common Applications... 25 Bibliography... 37ForewordThis 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 1971-2006 Rotating Electrical Machines – Terminal Markings and Direction of Rotation. Compared with GB/T 1971-2006, the major technical changes of this Document are as follows besides the structural adjustments and editorial modifications. a) Add the primary winding of the synchronous motor (see 6.5.1 of this Edition); b) Add the excitation winding of the synchronous motor (see 6.5.2 of this Edition); c) Add permanent magnet synchronous motor (see 6.5.3 of this Edition); d) Revise Figures 16 and 24, changing the symbol X into A (see Figures 16 and 24 of this Edition; Figures 16 and 24 of 2006 Edition); e) Add Figure A.11 "Variable Torque, Dual Voltage (1.√3), Nine Terminals" in the Annex (see Annex A of this Edition); f) Revise the symbol of the shunt winding terminal in Figures A.22 and A.23 in the Annex from F to E (see Annex A of this Edition; Annex A of 2006 Edition). This Document equivalently adopts IEC 60034-8.2014 Rotating Electrical Machines – Part 8. Terminal Markings and Direction of Rotation. The Chinese documents that have a consistent correspondence with the international documents cited in this document are as follows. --- GB/T 755-2019 Rotating Electrical Machines - Rating and Performance (IEC 60034- 1.2017, IDT); --- GB/T 4026-2019 Basic and Safety Principles for Man-Machine Interface, Marking and Identification - Identification of Equipment Terminals, Conductor Terminations and Conductors (IEC 60445-2017, IDT); --- GB/T 5465.1-2009 Graphical Symbols for Use on Electrical Equipment - Part 1. Overview and Classification (IEC 60417 Database. 2007-01, MOD). This Document made the following editorial modifications. --- Change the standard name into Rotating Electrical Machines – Terminal Markings and Direction of Rotation, so as to keep consistent with Chinese technical standard system. Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by China E4lectrical Equipment Industry Association. This Document shall be under the jurisdiction of National Technical Committee on Rotating Motor of Standardization Administration of China (SAC/TC 26). Drafting organizations of this Document. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd.; Jiangsu Xi’anda Explosion-Proof Co., Ltd.; Jiamusi Electric Machine Company Limited; Shanghai Motor System Energy Saving Engineering Technology Research Center Co., Ltd.; CRRC Yongji Electric Co., Ltd.; Wolong Electric Nanyang Explosion-Proof Group Co., Ltd.; Kungfu Sci-Tech Co., Ltd.; Shandong Huali Electric Motor Group Co., Ltd.; Nanyang Weite Explosion-Proof Motor Co., Ltd.; Shanxi Electric Motor Manufacturing Co., Ltd.; Shanghai Testing & Inspection Institute; Xiangtan Electric Manufacturing Co., Ltd.; Xi’an Tech Full Simo Motor Co., Ltd.; Anhui Wannan Electric Machine Co., Ltd.; Nanfang Pump Industry Co., Ltd.; Rongcheng Rongjia Power Co., Ltd.; Dongfang Electric Co., Ltd.; Zhejiang Yolsh Machinery & Electric Co., Ltd.; and Siemens (China) Co., Ltd. Chief drafting staffs of this Document. Huang Lei, Ma Heran, Lu Jinsheng, Li Rui, Xu Yong, Wu Xuandong, Peng Feifei, Wang Qingdong, Li Zongjie, Chen Pu, Luan Hua, Zhang Lei, Huang Jian, and Gao Xin. The historical editions replaced by this Document are as follows. --- GB 1971-1980 was first-time published in 1980; first-time revised in 2006; --- It is the second-time revised hereby. Rotating Electrical Machines – Terminal Markings and Direction of Rotation1 ScopeThis Document applies to A.C. and D.C. machines and specifies.2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. IEC 60034-1 Rotating Electrical Machines – Part 1.Rating and Performance IEC 60417-1 Graphical Symbols for Use on Equipment – Part 1.Overview and Application3 Terms and DefinitionsFor the purposes of this Document, the terms and definitions given in IEC 60034-1 and the following apply. One or more winding elements associated with a particular phase. Order in which the voltages successively reach their maximum positive values between supply conductors.4 SymbolsBA. AC brakes BD. DC brakes BW. Brush-wear detector5 Direction of RotationThe direction of rotation shall be that of the shaft observed when facing the D-end. Machines with terminal markings according to this standard shall have a clockwise direction of rotation.6 Rules for Terminal MarkingsWhen several leads or conductors are provided to share the current, the terminal markings shall be identified by an additional numerical suffix separated by a hyphen. See Figure 10. The termination for the protective earthing conductor shall be marked with the letters PE according to IEC 60445 (or marked with symbol IEC 60417-5019.2006-08). No other terminals shall be so marked. When several ends of winding elements are joined, the terminal marking shall use the lower suffix; see Figure 8.7 Auxiliary Terminal Marking RulesThree-phase, single voltage The auxiliary terminal marking for single voltage of three-phase machine is shown in Figure 27. The auxiliary terminal marking for two-lead devices of types TB, TC, TM, TN and TP is shown in Figure 29. Switches shall be marked and connected as shown in Figure 33 where ∗ denotes the switch number. ......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 1971-2021 be delivered?Answer: The full copy PDF of English version of GB/T 1971-2021 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 1971-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 1971-2021_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 1971-2021 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 1971-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1971-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB/T 1971-2021?A step-by-step guide to download PDF of GB/T 1971-2021_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 1971-2021". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
