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GB/T 13957-2022 English PDF (GBT13957-2022)

GB/T 13957-2022 English PDF (GBT13957-2022)

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GB/T 13957-2022: Technical requirements for the fundamental series of three-phase large asynchronous motor

This document specifies the type, basic parameters and dimensions, technical requirements, inspection rules, test methods, as well as requirements for the marking, packaging and warranty period, of three-phase large asynchronous motor. This document applies to large-scale Y series four-pole and above general-purpose cage-rotor three-phase asynchronous motors and large-scale YR series four-pole and above general-purpose wound-rotor three-phase asynchronous motors. The center heights are 710 mm, 800 mm, 900 mm, 1 000 mm and 1 120 mm, respectively. It applies to large-scale YKS, YRKS series three-phase asynchronous motors as a reference.
GB/T 13957-2022
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 29.160.30
CCS K 22
Replacing GB/T 13957-2008
Technical requirements for the fundamental series of three-
phase large asynchronous motor
ISSUED ON: DECEMBER 30, 2022
IMPLEMENTED ON: JULY 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Types, basic parameters and dimensions ... 6
5 Technical requirements ... 14
6 Test methods ... 22
7 Inspection rules ... 23
8 Marking, packaging and warranty period ... 24
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 13957-2008 Technical requirement for the fundamental series of three-phase large asynchronous motor; compared with GB/T 13957-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
-- Add the normative references GB/T 20160, GB/T 22715, GB 30254-2013; delete the normative reference JB/T 10098 (see Chapter 2; Chapter 2 of the 2008 edition); -- Add the chapter ?€?Terms and definitions?€? (see Chapter 3);
-- Change the type spectrum of the Y series motor, and complete the performance parameters of the corresponding supplementary specifications (see Table 1 ~ Table 4 and Table 10 ~ Table 13; Table 1 ~ Table 4 and Table 10 ~ Table 13 of the 2008 edition);
-- Delete the ?€?short-time elevated voltage test?€? (see 4.10, 5.2 of the 2008 edition); -- Add Table 17 ?€?Inspection rules?€? (see Chapter 7).
Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying patents. This Standard was proposed by China Electrical Equipment Industry Association. This document shall be under the jurisdiction of National Technical Committee 511 on Large Generator of Standardization Administration of China (SAC/TC 511). Drafting organizations of this document: Harbin Electric Power Equipment Co., Ltd., Harbin Large Electrical Machinery Research Institute Co., Ltd., Xiangtan Electric Manufacturing Co., Ltd., DEC (Deyang) Electric Motor Technology Co., Ltd., Shanghai Electric Machinery Co., Ltd., Jiamusi Electric Machine Co., Ltd., Heilongjiang Nuclear Main Pump Engineering Technology Research Center, Lanzhou Electric Corporation, SEC Electric Machinery Co., Ltd., Wolong Electric Nanyang Explosion Protection Group Co., Ltd., China Nuclear Power Engineering Co., Ltd. Main drafters of this document: Wang Zeyu, Sheng Zhiwei, Wang Jingming, Sun Yutian, Zhao Dongzhi, Zhong Weilin, Peng Dahua, Chang Yanqin, Song Yu, Zhai Ming, Tan Huating, Yang Shengcheng, Tong Fuchun, Zhou Mi.
The previous versions of this document and the documents which are replaced by this document are as follows:
Technical requirements for the fundamental series of three-
phase large asynchronous motor
1 Scope
This document specifies the type, basic parameters and dimensions, technical requirements, inspection rules, test methods, as well as requirements for the marking, packaging and warranty period, of three-phase large asynchronous motor. This document applies to large-scale Y series four-pole and above general-purpose cage-rotor three-phase asynchronous motors (hereinafter referred to as ?€?Y series motors?€?) and large-scale YR series four-pole and above general-purpose wound-rotor three-phase asynchronous motors (hereinafter referred to as ?€?YR series motors?€?). The center heights are 710 mm, 800 mm, 900 mm, 1 000 mm and 1 120 mm, respectively. It applies to large-scale YKS, YRKS series three-phase asynchronous motors as a reference.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document. GB/T 191, Packaging - Pictorial marking for handling of goods
GB/T 755, Rotating electrical machines - Rating and performance
GB/T 997, Classification of types of construction, mounting arrangements and terminal box position (IM Code) for rotating electrical machines
GB/T 1032, Test procedures for three-phase induction motors
GB/T 1096, Square and rectangular keys
GB/T 1971, Rotating electrical machines - Terminal markings and direction of rotation
GB/T 1974, Tangential keys and keyways
GB/T 1993, Cooling methods for rotating electrical machines
GB/T 4772.2, Dimensions and output series for rotating electrical machines - Part 2: Frame numbers 355 to 1000 and flange numbers 1180 to 2360
GB/T 4831, Specification for model of rotating electrical motor
GB/T 4942, Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification
GB/T 10068, Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity
GB/T 10069.1, Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 1: Method for the measurement of airborne noise emitted by rotating electrical machines
GB/T 10069.3, Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 3: Noise limits
GB/T 20160, Recommended practice for testing insulation resistance of rotating machinery
GB/T 22715, Impulse voltage withstand levels of form-wound stator coils for rotating a. c. machines
GB 30254-2013, Minimum allowable values of energy efficiency and the energy efficiency grades for cage three-phase high voltage induction motor
3 Terms and definitions
No terms and definitions need to be defined in this document.
4 Types, basic parameters and dimensions
4.1 The product model consists of two parts: product code and specification code, which shall meet the requirements of GB/T 4831.
4.2 The degrees of protection provided by enclosure shall meet the requirements of GB/T 4942.
4.3 The cooling methods for motors are IC01, IC11, IC21, IC31, which shall meet the requirements of GB/T 1993, or be agreed by both parties.
4.4 The construction and mounting arrangements for motors are IMB3, IM7211, IM7212, which shall meet the requirements of GB/T 997, or be agreed by both parties. 4.5 The rating of the motor is a continuous rating based on the S1 duty system. 5.18 The shaft extension of the motor is not allowed to bear the external axial force and radial force other than the weight of the coupling. When the motor and the driven machinery are connected by a flexible coupling, there shall be a limiting device on the coupling, and the allowable movement shall be as stipulated in the agreement. 5.19 The stator winding of the motor shall be equipped with at least 6 embedded resistance temperature measuring elements with graduation number Pt100, and each bearing bush shall be equipped with at least one resistance temperature measuring element with graduation number of Pt100, which shall be stipulated in the agreement if necessary.
5.20 Viewed from the extension end of the main shaft, the terminal box of the motor is usually located on the right side of the machine frame (or according to the agreement). When the power is 2 000 kW and above, the neutral point shall be led out. 5.21 When the alphabetical order of the marks on the outlet end is the same as the voltage phase sequence of the three-phase power supply, the motor shall rotate clockwise when viewed from the extension end of the main shaft.
5.22 The motor is not allowed to be reversed or braked during operation. The YR series motor is allowed to reverse after stopping, and the Y series motor is only allowed to rotate in one direction. Whether they are allowed to reverse after stopping depends on the agreement.
5.23 While meeting the requirements that the terminal voltage during the starting process is not lower than 85% of the rated value, and the resistance torque generated by the load is proportional to the square of the rotational speed, under the condition that the rated speed is less than 60% of the rated torque, the Y series motor is allowed to start twice continuously in the actual cold state (at the initial state of ambient temperature, the motor shall stop naturally between the second starts), or start once in a hot state after rated operation (the initial state does not exceed the rated operating temperature).
5.24 The motor shall have reliable measures to prevent shaft current.
5.25 The appearance and assembly quality requirements of the motor are as follows: a) The assembly of the motor shall be complete and correct, with all kinds of marks complete;
b) The paint on the surface of the motor shall be dry and complete, the paint film shall be uniform, without cracks, peeling, bubbles and other defects, and the coating shall be complete;
c) The motor shall rotate smoothly and briskly, without stagnation, the sound shall be even and harmonious without harmful noise;
d) The bearing oil tank, cooler and related oil pipes and water pipes of the motor shall be well sealed without oil or water leakage.
5.26 In addition to meeting the requirements of 5.1 ~ 5.24, the motor shall also be tested for the following items:
a) Determination of insulation resistance;
b) Determination of DC resistance of the winding in the cooling state;
c) Voltage resistance test;
d) Determination of no-load current and loss;
e) Determination of efficiency, power factor and slip;
f) Inter-turn insulation impulse withstand voltage test;
g) Measurement of no-load characteristic curve;
h) Measurement of locked-rotor characteristic curve;
i) Measurement of moment of inertia.
6 Test methods
6.1 The routine test of the motor shall be carried out according to the provisions of GB/T 1032.
6.2 The mechanical inspection items shall be carried out according to the following requirements:
a) Rotation inspection: The motor shall be smooth and brisk when rotating, without stagnation;
b) Appearance inspection: Check whether the assembly of the motor is complete and correct, and the paint on the surface of the motor shall be dry, uniform, and free from stains, bumps, cracks, etc.;
c) Inspection of installation dimensions, external dimensions and key dimensions: installation dimensions and tolerances shall comply with the provisions of 4.8; key dimensions shall comply with the provisions of 4.9; the inspection of installation dimensions and tolerances shall be carried out in accordance with GB/T 4772.2;
d) Inspection of collector rings and brushes of YR series motors: the surface of collector rings shall be smooth; no blisters are allowed; the brushes and collector rings shall be in good contact.

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