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GB/T 25409-2025: Small-size submersible motor-pumps
GB/T 25409: Evolution and historical versions
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Small-size submersible motor-pumps
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GB/T 25409-2025
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| GB/T 25409-2010 | English | 290 |
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Small-size submersible motor-pumps
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Basic data
| Standard ID | GB/T 25409-2025 (GB/T25409-2025) |
| Description (Translated English) | Small-size submersible motor-pumps |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B91 |
| Classification of International Standard | 65.060.35 |
| Word Count Estimation | 34,375 |
| Date of Issue | 2025-10-31 |
| Date of Implementation | 2026-05-01 |
| Older Standard (superseded by this standard) | GB/T 25409-2010 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 25409-2025: Small-size submersible motor-pumps
---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.
ICS 65.060.35
CCSB91
National Standards of the People's Republic of China
Replaces GB/T 25409-2010
Small submersible pump
Published on 2025-10-31
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Type, Model and Basic Parameters 1
5 Technical Requirements 12
6.Test Methods 18
7 Inspection Rule 20
8.Marking, Packaging, Transport and Storage 21
Appendix A (Normative) Efficiency Correction and Determination 23
References 29
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 25409-2010 "Small Submersible Pumps". Compared with GB/T 25409-2010, the only changes are structural adjustments and editing.
Aside from the sexual alterations, the main technical changes are as follows.
a) The type, model, and basic parameters of the electric pump have been changed (see Chapter 4, Chapter 3 of the.2010 edition);
b) The performance requirements for the electric pump have been changed (see 5.2, 4.2 in the.2010 version);
c) The guaranteed values for motor efficiency, power factor, and maximum input power have been changed (see 5.3.1, 4.3.1 in the.2010 version);
d) The requirements for stall performance of the electric motor have been changed (see 5.3.2~5.3.5, 4.3.2~4.3.4 in the.2010 version);
e) The tolerances for the guaranteed electrical performance values of the electric motors have been changed (see 5.3.7, 4.3.5 of the.2010 edition);
f) The temperature rise limit for electric pumps has been changed (see 5.4.1, 4.4.1 in the.2010 version);
g) The requirements for grounding devices and markings have been changed (see 5.4.6, 4.4.6 of the.2010 edition);
h) The requirements for marking and reversing the direction of the electric pump outlet have been changed (see 5.4.7, 4.4.7 in the.2010 version);
i) The requirements for the lead-out cables have been changed (see 5.5.2, 4.5.2 of the.2010 version);
j) The requirement for rotor balance of the electric motor has been increased (see 5.5.4);
k) A test method for the protection rating of electric pump enclosures has been added (see 6.1).
l) The test method for electric pump performance has been changed (see 6.2, 5.1 of the.2010 version);
m) Added test methods for motor performance (see 6.3);
n) A test method for the temperature rise of electric pumps has been added (see 6.4.1);
o) A method for measuring the insulation resistance of electric pumps has been added (see 6.4.2);
p) A method for testing the withstand voltage of electric motors has been added (see 6.4.3);
q) A test method for inter-turn insulation of windings has been added (see 6.4.4);
r) A method for inspecting protective devices has been added (see 6.4.5);
s) A startup test method has been added (see 6.4.8);
t) A test method for centrifugal speed when the centrifugal switch is off has been added (see 6.5.1);
u) A method for inspecting the electric pump's lead cable has been added (see 6.5.2);
v) A visual inspection method for electric pumps has been added (see 6.6.1);
w) An operational inspection method has been added (see 6.6.2);
x) The reliability testing methods have been changed (see 6.7, 5.7 in the.2010 version);
y) The graphs and tables of the electric pump efficiency curves and correction curves have been modified (see Appendix A, Appendix A of the.2010 edition).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Standardization of Agricultural Machinery (SAC/TC201).
This document was drafted by. Jiangsu University, Xinjie Pump Industry (Zhejiang) Co., Ltd., Leo Group Zhejiang Pump Industry Co., Ltd., and Zhejiang Dayuan Pump Industry.
Joint-stock company, Zhejiang Fengyuan Pump Industry Co., Ltd., Zhejiang Fengqiu Kerui Pump Industry Co., Ltd., Haicheng Sanyu Pump Industry Co., Ltd., Shanxi Tianhai
Pump Industry Co., Ltd., China Academy of Agricultural Mechanization Sciences Group Co., Ltd., Youli Electromechanical Co., Ltd., Zhejiang Qiantao Pump Industry Co., Ltd.
The company, Taizhou Jiadi Pump Industry Co., Ltd., Zhejiang Langqi Technology Co., Ltd., Jiangsu Taifeng Pump Industry Co., Ltd., and Guangdong Ruirong Pump Industry Co., Ltd.
Company, Hangzhou Slater Pump Industry Co., Ltd., Dafu Intelligent Technology Co., Ltd., Zhejiang Dongyin Technology Co., Ltd., Zhejiang Haobei Pump Industry Co., Ltd.
The company, Zhejiang Provincial Institute of Mechanical and Electrical Products Quality Inspection Co., Ltd., Zhejiang Daming Electromechanical Co., Ltd., Zhongke Huanli Co., Ltd., and Lewei Pump Industry.
Limited Liability Company, Jiangsu Aerospace Hydraulic Equipment Co., Ltd., Jinhua Dongda Pump Industry Co., Ltd., Luohe Sitong Pump Industry Co., Ltd., Wenling City
Product Quality Inspection Institute, Frog Pump Industry Co., Ltd., ETT Smart Water Technology Co., Ltd., Zhejiang Aobin Pump Industry Co., Ltd., Shanghai Ren
Private Enterprise Group Water Pump Co., Ltd., Hebei Guoqian Cable Co., Ltd., Fujian Ai's Electric Appliances Co., Ltd., Taizhou Inspection and Testing Co., Ltd.
The company, Jiangsu Luoyun Water Conservancy Project Management Office, Yuelian Electromechanical Co., Ltd., and Xiamen Micro-Energy Electronics Technology Co., Ltd.
The main drafters of this document are. Cao Puyue, Ge Jie, Ying Rongjun, Hu Xiaojun, Sun Jianguo, He Zehao, Li Lulu, Wang Shuaijie, and Zhao Liwei.
Zhang Xiansheng, Chen Xianjun, Zhao Fuzeng, Chen Xianyuan, Cai Yesheng, Ruan Mingwei, Chen Guorong, Zhang Jiangping, Chen Chao, Fang Xiubao, Guan Mincheng, Cai Haibing, Yu Hui
Xie Chao, Zhang Haiping, Huang Congbing, Tong Xinyin, Jin Shibin, Zhou Xiangyang, Nie Guojun, Lü Yajun, Chen Li, Ye Jinwei, Li Runfang, Lü Shusheng, Yin Gang
Zhu Rui, Wang Guojun, Zhou Yinxuan, Liao Huaiyou, Ruan Li, Xu Yi, Li Gang, Pan Weifeng, Wang Zhenwei, Xie Qifeng, Lin Hanji.
This document was first published in.2010, and this is its first revision.
Small submersible pump
1 Scope
This document specifies the types, models, basic parameters, technical requirements, inspection rules, marking, packaging, transportation, and storage of small submersible pumps.
The document describes the corresponding experimental methods.
This document applies to small submersible pumps with a rated power of 22kW or less that are used to pump clean water.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 191 Pictorial Symbols for Packaging and Storage
GB/T 755 Ratings and Performance of Rotating Electrical Machines
GB/T 1971 Markings on wire ends and direction of rotation for rotating electrical machines
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes Retrieved by Acceptable Quality Limit (AQL) for Lot-by-Lot Inspection
GB/T 4942-2021 Protection ratings (IP codes) for integral structures of rotating electrical machines
GB/T 5013.4 Rubber-insulated cables with rated voltage of 450/750V and below - Part 4.Flexible wires and flexible cables
GB/T 9239.1-2006 Mechanical Vibration Constant-State (Rigid) Rotor Balancing Quality Requirements Part 1.Specifications and Balancing Tolerances
test
GB 10395.8-2006 Safety Technical Requirements for Agricultural and Forestry Tractors and Machinery Part 8.Irrigation and Drainage Pumps and Pump Units
GB 10396 General Rules for Safety Signs and Hazard Symbols for Agricultural and Forestry Tractors and Machinery, Lawn and Horticultural Power Machinery
GB/T 12785-2014 Test Methods for Submersible Pumps
GB/T 13306 Nameplates
GB 18613-2020 Minimum Energy Efficiency Values and Energy Efficiency Grades for Electric Motors
JB/T 5673-2015 General Technical Requirements for Painting Agricultural and Forestry Tractors and Implements
JB/T 6880 (All Parts) Pump Castings
JB/T 8735.2 Rubber-insulated flexible wires and cables with rated voltage of 450/750V and below - Part 2.General-purpose rubber-sheathed flexible cables
JB/T 8735.3 Rubber-insulated flexible wires and cables with rated voltage of 450/750V and below - Part 3.Rubber-insulated braided
flexible wire
JB/T 11923 Reliability Assessment Method for Submersible Pumps
3 Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4.Type, Model and Basic Parameters
4.1 Type
4.1.1 The small submersible electric pump (hereinafter referred to as the pump) is vertical, with the pump and motor coaxial or non-coaxial, and the impeller is single-stage or multi-stage.
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