GB/T 1971-2021 PDF English
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| GB/T 1971-2021 | English | 440 |
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Rotating electrical machines - Terminal markings and direction of rotation
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| GB 1971-2006 | English | 85 |
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[GB/T 1971-2006] Rotating electrical machines. Terminal markings and direction of rotation
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| GB 1971-1980 | English | 399 |
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Terminal markings and direction of rotation of rotating electrical machines
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GB/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/GBT1971-2021
GB
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 Contents
Foreword... 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... 37
Foreword
This 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 Rotation
1 Scope
This Document applies to A.C. and D.C. machines and specifies.
2 Normative References
The 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
Application
3 Terms and Definitions
For 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 Symbols
BA. AC brakes
BD. DC brakes
BW. Brush-wear detector
5 Direction of Rotation
The 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 Markings
When 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 Rules
Three-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.
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