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GB/T 21427-2025: Special environmental condition - Technical requirements and test methods for electric power plant system with internal combustion engines in dry heat-desert
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GB/T 21427: Evolution and historical versions
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Special environmental condition - Technical requirements and test methods for electric power plant system with internal combustion engines in dry heat-desert
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| GB/T 21427-2008 | English | 329 |
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Special environmental condition -- Requirements and test methods for electric powerplant with internal combustion engines in dry heat-desert
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Basic data | Standard ID | GB/T 21427-2025 (GB/T21427-2025) | | Description (Translated English) | Special environmental condition - Technical requirements and test methods for electric power plant system with internal combustion engines in dry heat-desert | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K52 | | Classification of International Standard | 27.100 | | Word Count Estimation | 30,316 | | Date of Issue | 2025-12-31 | | Date of Implementation | 2026-07-01 | | Older Standard (superseded by this standard) | GB/T 21427-2008 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 21427-2025: Special environmental condition - Technical requirements and test methods for electric power plant system with internal combustion engines in dry heat-desert
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National Standards of the People's Republic of China
ICS 27.100CCS K 52
Special environmental conditions, hot and dry desert, for internal combustion engine power plants
System technical requirements and test methods
Special environmental condition-Technical requirements and test methods for
electric power plant system with internal combustion engines in dry heat⁃desert
Released on December 31, 2025
Implemented 2026-07-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Replaces GB/T 21427-2008
Table of contents
Preface V
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Technical Requirements 2
4.1 General Rules 2
4.2 Environmental Conditions 2
4.3 Power Types 4
4.4 Startup Requirements 4
4.5 Electrical Specifications 4
4.6 Sealing performance 4
4.7 Security 4
4.8 Protective Measures 6
4.9 Temperature rise 7
4.10 Environmental pollution limits 7
4.11 Parameter Requirements 7
4.12 Structure and Design 8
4.13 Appearance Quality 9
4.14 Completeness 9
4.15 Mark 9
5.Test Rules 10
5.1 Test Classification 10
5.2 Test conditions 10
5.3 Test Instruments and Meters 10
5.4 Test Item 11
6.Test Methods 13
6.1 Insulation resistance measurement 13
6.2 Withstand Voltage Test 13
6.3 Visual Inspection 13
6.4 Marking and Packaging Inspection 13
6.5 Completeness Inspection 13
6.6 Quality Measurement 13
6.7 External Dimension Measurement 13
6.8 Room Temperature Start-up Performance Check 14
6.9 Low-temperature start-up measures inspection 14
6.10 Phase sequence check 14
6.11 Illuminance Check 14
6.12 Control panel indicator device inspection 14
6.13 Vehicle Braking Performance Check 14
6.14 Parking brake performance check 14
6.15 Inspection of protective devices (or measures) 14
6.16 High Temperature Protection Inspection 14
6.17 Functional check of manual emergency stop device 14
6.18 Insulation monitoring device inspection 14
6.19 Grounding Resistance Measurement 14
6.20 Short-circuit protection function check 14
6.21 Overload protection function check 14
6.22 Overvoltage protection function check 15
6.23 Undervoltage protection function check 15
6.24 Over-frequency protection function check 15
6.25 Underfrequency protection function check 15
6.26 Overheat protection function check 15
6.27 Low oil pressure protection function check 15
6.28 Overspeed protection function check 15
6.29 Reverse power protection function check 15
6.30 Frequency drop measurement 15
6.31 Steady-state frequency band measurement 15
6.32 Transient frequency deviation (towards the initial frequency) and transient frequency deviation (towards the rated frequency), respectively, increased by load (-) and
Load reduction () and frequency recovery time measurement 15
6.33 Steady-state voltage deviation measurement 15
6.34 Voltage Unbalance Measurement 15
6.35 Measurement of relative voltage setting drop range and relative voltage setting rise range 16
6.36 Transient voltage deviation and voltage recovery time, measured separately for load increase (-) and load decrease () 16
6.37 Voltage Modulation Measurement 16
6.38 Transient Characteristic Measurement 16
6.39 Check the ability to directly start the motor 16
6.40 Check for voltage changes under hot and cold conditions 16
6.41 Measurement of line voltage deviation under unbalanced load 16
6.42 Three-phase voltage phase shift measurement 16
6.43 Measurement of sinusoidal distortion rate of line voltage waveform 16
6.44 Measurement of Total Harmonic Content of Phase Voltage 16
6.45 Voltage Deviation Coefficient Measurement 16
6.46 Measurement of Frequency Modulation Amount and Frequency Modulation Rate 16
6.47 Measurement of Frequency Drift Amount and Frequency Drift Rate 16
6.48 Continuous operation test 16
6.49 Temperature rise measurement 17
6.50 Current stability accuracy measurement 17
6.51 Voltage Regulation Accuracy Measurement 17
6.52 Pulsating Voltage Measurement 17
6.53 Fuel Consumption Rate Measurement 17
6.54 Vibration value measurement 17
6.55 Noise level measurement 17
6.56 Conducted Interference Measurement 17
6.57 Radiated Interference Measurement 17
6.58 Measurement of Hazardous Substance Concentration 17
6.59 Smoke opacity measurement 17
6.60 High Temperature Test 17
6.61 Low Temperature Test 17
6.62 Damp heat test 17
6.63 Rain test 18
6.64 Inclined Operation Test 18
6.65 Driving Test 18
6.66 Transport Test 18
6.67 Reliability and Maintainability Tests 18
6.68 Solar Radiation Experiment 18
6.69 Dust Test 18
7 Packaging, transportation and storage 18
7.1 Packaging 18
7.2 Transportation 18
7.3 Storage 18
Appendix A (Informative). Characteristics of Hot and Arid Desert Climate and its Hazards to Power Plants 19
A.1 Characteristics of arid and hot desert climate 19
A.2 The Harm of Hot and Arid Deserts to Power Plants 19
Appendix B (Informative) Conditions for Mechanically Active Substances 21
Appendix C (Informative) Reference Limits for Power Plant Noise in the Operating Environment 22
Foreword
This document conforms to GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting is scheduled.
This document replaces GB/T 21427-2008 "Technical Requirements and Tests for Internal Combustion Engine Power Station Systems under Special Environmental Conditions. Hot and Dry Deserts".
Compared with GB/T 21427-2008, the main technical changes in the "Methods" are as follows, except for structural adjustments and editorial modifications.
--The scope has been changed (see Chapter 1, Chapter 1 of the.2008 edition);
--The term "internal combustion engine power station system" has been added (see 3.1);
--The "General Provisions" section has been changed to "General Rules" and related requirements have been added (see 4.1,.2008 version 4.1).
--Changed the following. "Environmental conditions in hot and dry desert regions", "Conditions for rated output power", and "Conditions for specified output power (with allowable corrections)".
Related content (see 4.2.1, 4.2.2, 4.2.3, and 4.2.1, 4.2.2, 4.2.3 in the.2008 edition).
--Added definitions for the abbreviations "Data Center Power (DCP)" and "Maximum Power of Small Power Generator Sets (MAX)" (see 4.3).
--Changed the content related to "Electrical Specifications" (see 4.5,.2008 version 4.5).
--The wording regarding sealing has been changed (see 4.6,.2008 edition of 4.6).
--The relevant content regarding "insulation resistance" and "phase sequence" has been changed (see 4.7.2, 4.7.4, and 4.7.2 and 4.7.4 in the.2008 version).
--Added requirements for "illuminance", "emergency shutdown" and "safety protection measures" (see 4.7.5, 4.7.6 and 4.7.7).
--The relevant content of "Electrical Protection" and "Mechanical Protection" has been changed (see 4.8.1, 4.8.2, and 4.7.6 and 4.7.7 in the.2008 version).
--Added requirements related to "concentration of hazardous substances", "radio interference", and "smoke opacity" (see 4.10.3, 4.10.4, and 4.10.5).
--Added relevant content on "parameter requirements" (see 4.11);
--The relevant content of "Structure and Design" has been changed (see 4.12, 4.8 in the.2008 edition).
--Change "Quality Assurance" to "Testing Rules" or "Testing Methods" (see Chapters 5 and 6, Chapter 5 in the.2008 edition);
--The relevant content on "Packaging, Transport and Storage" has been changed (see Chapter 7, Chapter 6 of the.2008 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 and is under the jurisdiction of the China Electrical Equipment Industry Association.
This document was drafted by. Lanzhou Power Vehicle Research Institute Co., Ltd., Saiwat (Shandong) Power Technology Co., Ltd., and Jiangxi Tsinghua.
Taihao Sanbo Motor Co., Ltd., Zhejiang Uniway Machinery Co., Ltd., State Grid Jiangsu Electric Power Co., Ltd., and Yacos Electric Power Technology (China)
Limited Liability Company, Taihao Power Technology Co., Ltd., Shandong Kangmler Power Group Co., Ltd., Tianjin Boway Power Equipment Co., Ltd., Baoda
Power System Co., Ltd., Jiangsu Kunpeng Electric Equipment Co., Ltd., Yangzhou Huadong Power Machinery Co., Ltd., Weichai Power Co., Ltd.
company.
The main drafters of this document are. Liu Bing, Zhong Shenghua, Liu Shaoming, Xu Hongwei, Sun Tiankui, Chen Guoping, Fu Xuedong, Yan Dong, Zhang Hongli, and Zheng Jianlian.
Jing Xuegui, Chen Feng, Wu Ningning, Liu Xiaoliang.
The release history of this document and the document it replaces is as follows.
--First published in.2008 as GB/T 21427-2008;
--This is the first revision.
Special environmental conditions, hot and dry desert, for internal combustion engine power plants
System technical requirements and test methods
1 Scope
This document specifies the technical requirements for internal combustion engine power plant systems under arid desert conditions, as well as the requirements for packaging, transportation, and storage.
The corresponding test rules and test methods were established.
This document applies to internal combustion engine power plant systems (hereinafter referred to as "power plants") used in hot and dry desert climates.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.
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 2423.24 Environmental testing – Part 2.Test methods – Test S. Simulated solar radiation on the ground and solar radiation test
Test and Climate Aging Test Guidelines
GB/T 2423.61 Environmental testing – Part 2.Test methods – Tests and guidelines. Sand and dust test for large specimens
GB/T 2819 General Technical Requirements for Mobile Power Stations
GB/T 2820.1 Reciprocating internal combustion engine driven alternator sets - Part 1.Applications, ratings and performance
GB/T 2820.5 Reciprocating internal combustion engine driven AC generator sets - Part 5.Generator sets
GB/T 2820.6 Reciprocating internal combustion engine driven alternator sets - Part 6.Test methods
GB/T 2820.9-2024 Reciprocating internal combustion engine driven alternator sets - Part 9.Measurement and evaluation of mechanical vibration
GB/T 6072.1 Performance of reciprocating internal combustion engines – Part 1.Calibration and test methods for power, fuel consumption and oil consumption
Additional requirements for general-purpose engines
GB 7258 Technical Conditions for Safe Operation of Motor Vehicles
GB/T 12786 General Technical Conditions for Automated Internal Combustion Engine Power Stations
GB/T 13306 Nameplates
GB/T 16273.1 Graphical symbols for equipment - Part 1.General symbols
GB/T 19608.2 Classification of Special Environmental Conditions Part 2.Hot and Arid Deserts
GB/T 20136-2025 General Test Methods for Internal Combustion Engine Power Stations
GB/T 20625 Terminology for Special Environmental Conditions
GB/T 20644.1-2025 Selection Guidelines for Special Environmental Conditions Part 1.Protection of Metal Surfaces
GB/T 20644.2-2025 Selection Guidelines for Special Environmental Conditions Part 2.Polymer Materials
GB 20891 Emission limits and measurement methods for exhaust pollutants from diesel engines used in non-road mobile machinery (China Stage III and IV)
JB/T 8194 Terminology for Internal Combustion Engine Power Stations
JB/T 8587 Safety Requirements for Internal Combustion Engine Power Stations
JB/T 10303 Technical Conditions for Industrial Frequency Diesel Generator Sets
3 Terms and Definitions
The terms and definitions defined in GB/T 20625 and JB/T 8194, as well as the following terms and definitions, apply to this document.
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