GB/T 4706.12-2024 English PDFUS$679.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4706.12-2024: Safety of household and similar electrical appliances - Part 12: Particular requirements for storage water heaters Status: Valid GB/T 4706.12: Historical versions
Basic dataStandard ID: GB/T 4706.12-2024 (GB/T4706.12-2024)Description (Translated English): Safety of household and similar electrical appliances - Part 12: Particular requirements for storage water heaters Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K09 Classification of International Standard: 13.120 Word Count Estimation: 34,339 Date of Issue: 2024-07-24 Date of Implementation: 2026-08-01 Older Standard (superseded by this standard): GB 4706.12-2006 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 4706.12-2024: Safety of household and similar electrical appliances - Part 12: Particular requirements for storage water heaters---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. GB/T 4706.12-2024 English version. Safety of household and similar electrical appliances - Part 12.Particular requirements for storage water heaters ICS 13.120 CCSK09 National Standard of the People's Republic of China Replaces GB 4706.12-2006 Released on 2024-07-24 2026-08-01 implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 General requirements 3 5 General conditions for testing 3 6 Categories 3 7 Markings and instructions 3 8 Protection against contact with live parts 4 9 Starting of electric appliances 4 10 Input power and current 4 11 Fever 4 12 Empty Chapter 5 13 Leakage current and electrical strength at operating temperature 5 14 Transient overvoltage 5 15 Moisture resistance 5 16 Leakage current and electrical strength 5 17 Overload protection of transformers and related circuits 5 18 Durability 6 19 Abnormal working conditions 6 20 Stability and mechanical hazards 6 21 Mechanical strength 6 22 Structure 7 23 Internal wiring 8 24 Components 8 25 Power connection and external cord 9 26 Terminals for external conductors 9 27 Grounding measures 9 28 Screws and connections 10 29 Electrical clearances, creepage distances and solid insulation 10 30 Heat and flame resistance 10 31 Rust prevention 10 32 Radiation, toxicity and similar hazards 10 Appendix 13 Appendix A (Informative) Routine Test 14 Appendix R (Normative) Software Evaluation 15 Appendix AA (Normative) Additional requirements for Class I water heaters that provide emergency protection measures in the event of grounding system anomalies 16 Annex BB (normative) Additional requirements for immersion heating units intended for installation in closed heat exchange water heaters 21 Reference 23 Figure 101 Example of storage water heater type 10 Figure 102 Example of thermocouple position 12 Figure 103 Test tool for measuring surface temperature 12 Figure AA.1 Single-phase water heater leakage current test circuit diagram (grounding system is energized) 17 Figure AA.2 Single-phase water heater leakage current test circuit diagram (grounding system continuity loss) 18 Figure AA.3 Three-phase water heater leakage current test circuit diagram (grounding system is energized) 19 Figure AA.4 Three-phase water heater leakage current test circuit diagram (grounding system continuity loss) 20 Table 101 Maximum temperature rise of external accessible surfaces under normal working conditions 5ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is Part 12 of GB/T 4706 "Safety of Household and Similar Electrical Appliances". GB/T 4706 has been published as follows part. --- Part 1.General requirements; --- Part 2.Particular requirements for electric irons; --- Part 121.Particular requirements for professional ice cream machines. This document replaces GB 4706.12-2006 "Particular requirements for safety of storage water heaters for household and similar electrical appliances" and Compared with GB 4706.12-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows. --- Changed the user groups not considered (see Chapter 1, Chapter 1 of the.2006 edition); --- Added the definition of low-pressure water heater (see 3.106); --- Added the definition of heat exchange water heater (see 3.108); --- Changed the notes of some texts to the main text (see 6.2, 7.1, 7.101, 19.13); --- Added the requirements for instructions for use (see 7.102, 7.103); --- Added temperature rise test requirements and methods for external easily accessible flat surfaces (see 11.3 and 11.8); --- Empty chapter changed to transient overvoltage (see Chapter 14, Chapter 14 of the.2006 edition); --- Added abnormal working test for low-pressure water heater (see 19.1); --- Deleted the outlet blockage test for open outlet water heaters (see 19.102 of the.2006 edition); --- Increased the requirements for the inner diameter of the vent pipe for low-pressure water heaters (see 22.104); --- Added structural requirements for closed water heaters equipped with heat exchangers (see 22.111); --- Added component requirements for thermal circuit breakers installed in closed water heaters (see 24.1.4); --- Changed the requirements for the operating temperature of thermal circuit breakers for closed water heaters (see 24.102, 24.102 of the.2006 edition); --- Added illustrations of low-pressure water heaters and heat exchange water heaters (see Figure 101); --- Added the illustration of the test tool for measuring surface temperature (see Figure 103); --- Added pressure test (see A.101); --- Added the content of software evaluation (see Appendix R); --- Changed the additional requirements for Class I water heaters that provide emergency protection measures when the grounding system is abnormal (see Appendix AA,.2006 Appendix AA of the.2002 International Tax and Public Finance (Issuance) Edition); --- Added additional requirements for immersion heating units intended to be installed in closed heat exchange water heaters (see Appendix BB). This document is modified to adopt IEC 60335-2-21.2018 "Safety of Household and Similar Electrical Appliances Part 2-21.Storage Water Heaters" Special Requirements for This document has made the following structural adjustments compared to IEC 60335-2-21.2018. --- Appendix BB corresponds to Appendix AA in IEC 60335-2-21.2018, and the remaining appendix numbers are postponed accordingly. The technical differences between this document and IEC 60335-2-21 and their reasons are as follows. --- Added explicit requirement in the instructions for use regarding "Class I water heaters intended to provide emergency protection measures when the grounding system is abnormal" (See 7.102) to make it clear that the appliance has the emergency protection measures; --- Added explicit requirements for "appliances with a waterproof rating lower than IPX4" in the installation instructions (see 7.103) to improve the selection of installation Accuracy of location; ---Added additional requirements for Class I water heaters to provide emergency protection measures when the grounding system is abnormal (see Appendix AA) to avoid Avoid safety hazards caused by abnormal grounding system. The following editorial changes were made to this document. --- The name of the standard was changed to "Safety of Household and Similar Electrical Appliances Part 12.Particular Requirements for Storage Water Heaters", and the standard was strengthened. Coordination of the quasi-system. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Household Electrical Appliances (SAC/TC46). This document was drafted by. China Household Electrical Appliances Research Institute, Qingdao Economic and Technological Development Zone Haier Water Heater Co., Ltd., Guangdong Midea Kitchen and Bathroom Electrical Appliance Manufacturing Co., Ltd., A.O. Smith (China) Water Heater Co., Ltd., Ariston Thermal Products (China) Co., Ltd., Guangdong Vanward Xin Electric Co., Ltd., Hangzhou Kangquan Water Heater Co., Ltd., Ningbo Shuaikang Water Heater Co., Ltd., Shenzhen Lianghui Technology Co., Ltd., Yuyao Jiarong Electronic Appliance Co., Ltd., Xiamen Shuai Ke Sanitary Ware Co., Ltd., Sakura Kitchen & Bathroom (China) Co., Ltd., Guangdong Wanjia Le Gas Appliances Co., Ltd., Hangzhou Joyoung Small Appliances Co., Ltd., Guangdong Aorong Electric Appliance Co., Ltd., Foshan Jiulong Machinery Co., Ltd., Jiangsu Product Quality Supervision and Inspection Institute, Anhui Zhongren Beijia Technology Co., Ltd., and Chongqing Shiyi Product Quality Inspection Co., Ltd. The main drafters of this document are. Ma Dejun, Wang Shengxian, Zhou Liguo, Chen Wei, Wan Huaxin, Zhang Yachen, Lu Wei, Gan Chaoyun, Huang Xunqing, Xu Feng, Zhang Huibao, Liu Ruigang, Qian Jiacan, Hou Quanduo, Chen Yanyong, Yu Shaoyan, Han Run, Yang Renqiang, Zhu Zhouyang, An Rongshuan, Chen Xiangyang, Fang Jian, Zhang Hao. The previous versions of this document and the documents it replaces are as follows. ---First issued in.1995 as GB 4706.12-1995, first revised in.2006; ---This is the second revision.IntroductionGB/T 4706 "Safety of Household and Similar Electrical Appliances" adopts most of IEC 60335.On this basis, GB/T 4706 refers to The structure of IEC 60335 is divided into several parts, consisting of general requirements and special requirements. Part 1 is general requirements, and the other parts are For products covered by special requirements, their safety requirements are general requirements used in combination with the special requirements. The requirements include supplements and modifications to the corresponding clauses in the general requirements to provide complete requirements for each product. This document is the protection requirements for electrical, mechanical, thermal, fire and radiation risks when the appliance is used normally in accordance with the instructions. This document also covers abnormal conditions that may occur during use and considers how electromagnetic interference may affect the safe operation of the equipment. This document has taken into account the requirements specified in GB/T 16895 "Low Voltage Electrical Installations". The appliance is connected to the power supply in accordance with the electrical wiring rules. requirements are coordinated. If multiple functions of an appliance involve other parts of GB/T 4706, the other parts shall apply to the appliance separately as long as it is reasonable. Each function. If applicable, consider the impact of one function on other functions. When no additional requirements are given in other parts for hazards already included in this document, GB/T 4706.1 applies. GB/T 4706 is a standard covering appliance safety and takes precedence over general standards/horizontal standards covering the same subject. This document is used in conjunction with GB/T 4706.1-2024 "Safety of Household and Similar Electrical Appliances Part 1.General Requirements". The part marked "applicable" in the document indicates that the corresponding clauses in GB/T 4706.1-2024 are applicable to this document; the part marked "replaces" in this document indicates that the corresponding clauses in GB/T 4706.1-2024 are applicable to this document. For the parts marked as "added" in this document, in addition to complying with GB/T 4706.1-2024, the provisions in this document shall prevail. In addition to the corresponding clauses, the clauses added in the clauses of this document must also be complied with; the part of this document marked "modified" means that in GB/T 4706.1- The relevant provisions of 2024 will be modified. Safety of household and similar electrical appliances Part 12.Particular requirements for storage water heaters1 ScopeThis chapter of GB/T 4706.1-2024 is replaced by the following content. This document specifies the safety requirements for storage water heaters intended for household and similar purposes and intended to heat water to temperatures below the boiling point. This document applies to household and similar appliances with a rated voltage not exceeding 250V for single-phase appliances and 480V for other appliances. A storage water heater that is intended to heat water to a temperature below boiling point. This document also applies to appliances which are not intended for normal household use but which may nevertheless present a hazard to the public, for example, those intended for use in shops, in light industry, Tools used by non-professionals in industry and on farms. This document also applies to Class I water heaters that explicitly provide emergency protection measures when the grounding system is abnormal. Such appliances must also meet the requirements of Appendix AA requirements. This document also applies to immersion heating units intended for installation in retrofittable closed heat exchange water heaters, which are required to comply with the attached Recording BB's requirements. As far as is practical, the common hazards presented by the appliances covered by this document are those which may be encountered by all persons in and around the home. However, in general, this document does not consider the following situations. --- The following groups of people (including children) cannot use the appliance safely without supervision or guidance. ● due to physical, sensory or mental impairment; or ● Due to lack of experience and knowledge. --- Children's play equipment. Note 101.Pay attention to the following. --- For equipment intended for use in vehicles, ships or aircraft, additional requirements may be required; --- The relevant national management departments may impose additional requirements on the equipment; ---National authorities have regulations for the installation of equipment connected to water sources. Note 102.This document does not apply to. --- Apparatus for boiling water (GB/T 4706.19); ---Instantaneous water heaters (GB/T 4706.11); --- Commercial vending machines (GB/T 4706.72); ---Appliances designed for industrial use; --- Appliances intended for use in special environments, such as those where corrosive or explosive gases (dust, steam or methane) are present.2 Normative referencesExcept for the following contents, this chapter of GB/T 4706.1-2024 applies. Increase. GB/T 16839.1-2018 Thermocouples Part 1.Electromotive force specifications and tolerances (IEC 60584-1.2013, IDT) GB/T 20044-2012 Electrical accessories - Mobile residual current devices without overcurrent protection for household and similar purposes (PRCD) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4706.12-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 4706.12-2024_English as soon as possible, and keep you informed of the progress. 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