GB 39752-2024 PDF English
US$575.00 · In stock · Download in 9 secondsGB 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 procedureStatus: Valid GB 39752: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 39752-2024 | English | 575 |
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Safety requirements of electric vehicle conductive supply equipment
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| GB/T 39752-2021 | English | 505 |
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Safety Requirements and Test Specifications of Electric Vehicle Conductive Supply Equipment
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GB 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/GB39752-2024
GB
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 Contents
Foreword... 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... 45
1 Scope
This 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 references
The 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
tests
3 Terms and definitions
The 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 abbreviations
4.1 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 port
5 Safety element requirements
5.1 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 rules
6.1 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 methods
7.1 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 standard
For 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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