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GB 39752-2024: Safety requirements of electric vehicle conductive supply equipment Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 39752: Historical versions
Similar standardsGB 39752-2024: Safety requirements of electric vehicle conductive supply equipment---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB39752-2024GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.99 CCS T 35 Replacing GB/T 39752-2021 Safety requirements of electric vehicle conductive supply equipment Issued on. JULY 24, 2024 Implemented on. AUGUST 01, 2025 Issued by. State Administration for Market Regulation; National Standardization Administration. Table of ContentsForeword... 3 1 Scope... 7 2 Normative references... 7 3 Terms and definitions... 9 4 Symbols and abbreviations... 16 5 Safety element requirements... 17 6 General test rules... 31 7 Test methods... 34 8 Implementation of the standard... 42 Appendix A (Normative) Installation of EV energy transfer equipment... 43 References... 451 ScopeThis document specifies the safety element requirements of EV energy transfer equipment (hereinafter referred to as "power supply equipment"), establishes test general rules, describes the corresponding test methods. Note. For independent electrical accessories and auxiliary materials (such as connecting devices, cables, insulating materials, etc.) of power supply equipment, they must be used in combination with this document according to specific product standards. This document is applicable to various types of power supply equipment, which has a rated output voltage of 1000 V AC or 1500 V DC and below, including power supply equipment in mode 2, mode 3, mode 4. This document does not cover the following. - Functional and performance requirements of power supply equipment not related to safety; - Information security requirements; - Safety requirements related to transport packaging and improper use; - Safety requirements caused by deliberate destruction and other purposeful behaviors; - Safety requirements for power supply equipment with discharge function; - Safety requirements for power supply equipment with automatic charging and top contact charging.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB/T 2423.1 Environmental testing for electric and electronic and electronic products - Part 2.Test methods - Tests A. Cold GB/T 2423.2 Environmental testing for electric and electronic products - Part 2.Test methods - Tests B. Dry heat GB/T 2423.4 Environmental testing for electric and electronic products - Part 2.Test method - Test Db. Damp heat, cyclic (12h + 12h cycle) GB/T 2423.17 Environmental testing for electric and electronic products - Part 2. Test method - Test Ka. Salt mist GB/T 2423.55-2023 Environmental testing - Part 2.Test methods - Test Eh. Hammer tests3 Terms and definitionsThe terms and definitions as defined in GB/T 18487.1-2023 and GB/T 29317-2021, as well as the following terms and definitions, apply to this document. 3.1 EV energy transfer equipment Equipment that connects the electric vehicle to the power grid (power source) and enables energy flow. 3.2 Enclosure An enclosure that provides the appropriate type and degree of protection for its intended use. 3.3 Tool An appliance that can be used to turn screws, latches or similar fixings.4 Symbols and abbreviations4.1 Symbols The following symbols apply to this document. IΔn. Rated residual operating current IK. Protection level code of the enclosure against harmful mechanical collisions from the outside world IPXX. Enclosure protection level code 4.2 Abbreviations The following abbreviations apply to this document. AC. Alternating Current CPT port. Conductive Power Transfer port5 Safety element requirements5.1 Conditions of use 5.1.1 Environmental classification The classification of the use environment of power supply equipment is shown in Table 1. 5.1.2 Pollution degree The pollution degree of the power supply equipment is the pollution degree of the external environment. The minimum pollution degree of the power supply equipment used indoors is PD2.When the indoor environment is exposed to a polluted industrial environment, the minimum pollution degree is PD3.The minimum pollution degree of the power supply equipment used outdoors is PD3. 5.2 Structure 5.2.1 General requirements The structure of the power supply equipment, including the enclosure, partitions, door locking devices and hinges, connections and splicing, shall have sufficient mechanical strength, to withstand the stress encountered during use under normal conditions and fault conditions. 5.2.2 Handles and manual control devices Handles, knobs, clamps, joysticks and other similar moving parts shall be firmly installed and shall not be loose under normal use. 5.2.5 Enclosure openings The configuration and construction of the openings shall ensure that foreign objects entering the openings will not contact the exposed live parts and cause danger. Openings in door panels, panels, covers, etc. shall meet the protection requirements of IPXXC when closed or in place. Power supply equipment intended for use in more than one direction is applicable to each direction. 5.2.6 Protection level The protection level of the power supply equipment's enclosure for outdoor use shall not be less than IP54; the protection level of the power supply equipment's enclosure for indoor use shall not be less than IP32. 5.3.1 Decisive voltage level limit (DVC) The electric shock protection measures depend on the decisive voltage level of the circuit. The decisive voltage level of the circuit depends on the operating voltage limit of the circuit and the insulation measures adopted. Circuits that meet DVC level A are touchable. 5.3.2 Insulation measures 5.3.2.1 Basic protection Under single fault conditions, including failure of functional insulation, basic insulation or supplementary insulation, the electric shock protection provided by the power supply equipment shall not cause a voltage higher than DVC level A on the accessible circuit or accessible conductive parts. 5.3.3 Residual current protection 5.3.3.1 Residual current protection of AC power supply equipment AC power supply equipment shall be equipped with an independent residual current protector (device) at each charging port, which shall comply with the relevant residual current action characteristics requirements of GB/T 14048.2, or GB/T 16916.1 and GB/T 22794, or GB/T 16917.1 and GB/T 22794.AC power supply equipment shall have one of the following protection measures. 5.5 Overheating and fire 5.5.1 Hazard identification When the power supply equipment is working normally, it shall prevent overheating caused by the following situations, to avoid degradation of electrical, mechanical, insulation or other performance, resulting in danger. 5.5.2 Allowable surface temperature The surface temperature of the EV energy transfer equipment shall not exceed the allowable temperature during operation.6 General test rules6.1 General requirements The power supply equipment shall be tested to prove that it meets the relevant requirements of this document. The test items shall be in accordance with the provisions of Table 6.If the components of the power supply equipment have met the relevant standards and are correctly installed and used, there is no need to repeat the inspection of the components during the whole machine test. 6.2.3 Load conditions The AC output port or DC output port of the power supply equipment shall be able to adjust to the maximum rated output power or current; the worst of the two conditions shall be selected for testing. For ports that are intended to be connected to batteries, batteries can be used instead of loads, or batteries and loads can be connected in parallel for testing if the test results may be affected; however, the traceability and reproducibility of the test results need to be evaluated. 6.3 Qualification criteria after applying fault conditions 6.3.1 Protection criteria for electric shock hazards After applying a single fault condition, the power supply equipment shall simultaneously meet the following protection requirements for electric shock hazards. 6.3.2 Criteria for protection against flame spread After applying a single fault condition, the power supply equipment shall not splash molten metal, burning insulating materials, particles burning with or without flames. 6.3.3 Criteria for qualified electromagnetic compatibility immunity test During and after the power supply equipment test, there shall be no fire, explosion, enclosure breakage, or other phenomena that endanger personal safety.7 Test methods7.1 Environmental adaptability test According to the "Test Ad. Low temperature test with gradual temperature change of heat dissipation test sample" method specified in GB/T 2423.1, the test temperature is -25 °C (outdoor type) or -5 °C (indoor type). The test time lasts for 2 hours, to check whether the power supply equipment can work normally. 7.2 Structural inspection 7.2.1 General inspection Visually inspect the surface of the power supply equipment in all directions (including the enclosure and the parts that can be touched during normal use), to see if there are burrs, obvious scratches and cracks and other surface defects that affect use. 7.2.2 Inspection of handle and manual control device Check whether handles, knobs, clamps, joysticks and other similar moving parts are firmly installed. 7.3 Electric shock protection test 7.3.1 Insulation measures test 7.3.1.1 Anti-electric shock test Use the articulated test finger (test tool B) in accordance with GB/T 4208 to conduct the test, to check whether the dangerous live parts of the power supply equipment that can be directly touched or may become dangerous live parts in the event of a fault are accessible. 7.3.2 Residual current protection inspection Check whether the residual current protection installation of the power supply equipment meets the requirements of 5.3.3, or have corresponding certification materials. 7.3.3 Electrical isolation inspection Check whether the electrical isolation measures between various parts of the power supply equipment meet the requirements of 5.3.4.8 Implementation of the standardFor EV energy transfer equipment that has newly applied for type testing, implementation will begin from the date of implementation of this document. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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