Recently, in accordance with the requirements of the General Office of the State Council for Complying and Reducing Compulsory Work Standards, the AQSIQ and the SAC and other relevant units completed 11,224 mandatory and 2066 mandatory standards in an all-round manner according to a unified evaluation method and progress requirement Planning project assessment, the basic construction of mandatory national standards as the main body of a new compulsory standard system. On February 22, 2017, the State Council executive meeting passed the "Standardization Law of the People's Republic of China (Revised Draft)", which clearly stipulates the management and scope of mandatory national standards. In line with the national compulsory standard reform, GB 19517 "National Electrical Equipment Safety Technical Code" as the electrical field coverage of a mandatory national standard, the revision work is also being carried out smoothly. First, the meaning of the standard revision and goals GB 19517 was first released in 2004 (GB). This national standard is based on the conclusion of the research results of China's electrical safety technology and the related electrical product safety standards for the first time, and refers to the EU's Low Voltage Directive. The standard puts forward the common safety technical requirements for the design, manufacture, sales and use of various types of electrical equipment. According to the current laws and regulations in our country, it puts forward the general requirements for the supervision of the implementation of standards and is the safety standard for low voltage electrical safety standards in China. GB 19517 released in 2009 second edition (GB). This revision is based on the guidance of deepening the reform of mandatory national standards in accordance with the general safety requirements for electrical equipment and the main technical indicators can be detectable, practical guidelines for the 2009 version, the expected revision objectives include: â— Exploring the effective model of strong standardization in the electrical appliance industry; â— By referring to the GB 19517 conformance standard, the mandatory standards listed in the conformance standards catalog have mandatory attributes for effective implementation; â— Conforming to the standards of conformity, the basis for determining the qualified level of product safety in the content composition, designing and manufacturing new products without corresponding product standards, and carrying out safety compliance inspection and product certification according to this standard. The level of safety qualified judge; â— Maintaining the correspondence and integrity of the technical standards system in the field of electrical appliances in terms of coverage. Second, the standard revision progress The revision of GB 19517-XXXX started in 2015 and has held 5 writing group meetings, including: In May 2015, for the first time, a writing group meeting was held to discuss and determine the general direction of the standard revision. In March 2016, the second Writing group meeting, discussed the standard revision principle, reached a consensus on retaining the mandatory attributes of the standard, expanding the scope of the standard, increasing the manufacturer's statement and so on; in July 2016, the third writing group meeting, to determine the standard writing technical structure , The standard name and standards catalog at all levels, the standard reference to other basic level / common standards at the same level principle; October 2016, the fourth writing group will study and analyze the safety requirements of explosion-proof electrical equipment and other stages of life cycle safety requirements The possibility of inclusion criteria was discussed in terms of the standard overall framework and the scope of the study; in March 2017, the fifth writing session was held. The fifth compilation group will be held in Shanghai from March 6 to March 8, 2017. The meeting will be chaired by Fang Xiaoyan, vice chairman of China National Electrical Appliances Industry Association / vice chairman and secretary general of National Electrical Safety Standards Committee. At the meeting, the drafting team members held heated discussions on the safety projects listed in the fourth draft of the draft and proposed drafting suggestions on the existing problems (for example, the project is not comprehensive, the project is classified incorrectly, and should not be included in the individual projects of the safety project) , Clear the drafting group members drafting tasks. Throughout the discussion, the meeting also made it clear that the scope of the standard should be properly generalized and that other items that may involve safety should be specified in the standard in the form of "reference", such as material requirements, seismic testing requirements, The request and so on. Third, the standard main content Through the discussion and drafting of the five writing sessions, the standard technical structure was determined as follows: - Chapter 1: Scope, Chapter 2: Normative References, Chapter 3: Terminology - Chapter 4: General Provisions, including: 4.1 Safety level, 4.2 Relationship between main body and Appendix A, 4.3 Relationship between Chapter 5 and Chapter 6, 4.4 Description of safety inspection items, 4.5 Manufacturer's declaration, 4.6 Inspection - Chapter 5: Principles of safety technology requirements, including: 5.1 General requirements, 5.2 Shock hazard protection requirements, 5.3 Mechanical hazard protection requirements, 5.4 Electrical connection and mechanical connection requirements, 5.5 Operational hazard protection requirements, 5.6 Power control and its dangers Protection requirements, 5.7 mark and manual - Chapter 6: Safety inspection project requirements, methods and conformity determination, including: 6.1 Environmental adaptability, 6.2 surface, 6.3 accessibility, 6.4 enclosure rating, 6.5 protective ground, 6.6 additional protection, 6.7 functional ground, 6.8 noise , 6.9 abnormal operation, 6.10 clearance, 6.11 creepage distance, 6.12 insulation resistance, 6.13 leakage current, 6.14 insulation through the distance of 43 safety inspection project requirements. --appendix Fourth, the next revision of work arrangements The Secretariat plans to hold the sixth session of the writing group in April 2017. Through the first five meetings, it has made it clear that the standards are formulated, the standard framework and the structure, and the principles of standard compilation. Starting from the sixth compilation group, the standard technical contents will be discussed in detail. In accordance with the revised standard schedule, the Secretariat will form the standard draft for comments in July and solicit opinions from all fields of the electrical industry. It is planned that the standard draft review will be finalized in the second half of 2017. National Electrical Safety Standardization Technical Committee Secretariat CNC Aluminum Sheet means aluminum sheet produced by CNC machine.Suit small size aluminum alloy spare part,ABS plastic etc process. 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GB 19517-XXXX "National Electrical Equipment Safety Technical Specification" in the development