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GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.99
CCS T 35
Replacing GB/T 18487.1-2015
Electric vehicle conductive charging system - Part 1.
General requirements
Issued on: SEPTEMBER 07, 2023
Implemented on: APRIL 01, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
Introduction... 11
1 Scope... 13
2 Normative references... 14
3 Terms and definitions... 17
4 Classification... 47
5 General requirements for charging system... 50
6 Communication... 54
7 Electric shock protection... 55
8 Connection between electric vehicle and EV energy transfer... 62
9 Vehicle adaptor... 64
10 Special requirements for vehicle coupler and EV plug and socket-outlet... 64
11 Structure requirements for EV energy transfer equipment... 67
12 Performance requirements for EV energy transfer equipment... 73
13 Overload protection and short circuit protection... 78
14 Emergency stop... 79
15 Service condition... 79
16 Maintenance and repair... 81
17 Marking and description... 81
Appendix A (Normative) AC charging control pilot circuit and control principle... 83
Appendix B (Normative) DC charging control pilot circuit and control principle of
connection set for charging in GB/T 20234.3... 115
Appendix C (Normative) DC charging control pilot circuit and control principle of
connection set for charging in GB/T 20234.4... 129
Appendix D (Informative) Vehicle power supply circuit voltage adaptability switching
... 171
Appendix E (Informative) V2G DC bi-directional charging technical solution using the
connection set for charging specified in GB/T 20234.4... 175
Appendix F (Normative) DC charging technology for multi-vehicle couplers... 182
Appendix G (Normative) Technical solution on DC charging compatibility using
vehicle adapter specified in GB/T 20234.4... 187
Electric vehicle conductive charging system - Part 1.
General requirements
1 Scope
This document specifies classification, general requirements, communication, electric
shock protection, connection between electric vehicle and EV energy transfer
equipment, special requirements of vehicle adaptor, vehicle coupler and EV plug and
socket-outlet, EV energy transfer equipment structure requirement, performance
requirement, overload protection and short circuit protection, emergency stop, service
conditions, repair, marking and description for electric vehicle conductive charging
system.
Note 1.Where no confusion is caused, the “EV energy transfer equipment” in this
document is referred to as “supply equipment”.
This document is applicable to current-controlled and/or voltage-controlled off-board
conductive power supply equipment to achieve one-way/two-way energy flow between
the electric vehicle rechargeable electrical energy storage system and the power supply
network (power supply). The rated voltage of the power supply network side (side A)
does not exceed 1 000 V AC or 1 500 V DC, and the rated maximum voltage of the
electric vehicle side (side B) does not exceed 1000 V AC or 1 500 V DC.
This document is also applicable to EV supply equipment which acquires energy from
onsite energy storage system (such as buffer battery).
This document applies to conductive charging or bi-directional charging systems of
electric vehicles that can be externally charged or bi-directional charged, including
battery electric vehicles, off-vehicle-chargeable hybrid electric vehicles and fuel cell
hybrid electric vehicles.
It also applies, as a reference, to conductive charging or bi-directional charging systems
of trams, railway vehicles, industrial vehicles, etc.
This document is not applicable to safety requirements on maintenance of electric
vehicle conductive charging/bi-directional charging system, or to the on-board charging
equipment as specified in GB/T 40432, or to trolleybus.
Refer to the relevant standards of electric vehicles for requirements for components
other than the key components of electric vehicle specified in this document (vehicle
side vehicle inlet, control pilot circuit, EV disconnection device).
Note 2.For EMC requirements for off-board electric vehicle supply equipment, see
GB/T 18487.2-2017.
Note 3.For requirements for top contact charging system, see GB/T 40425 (all parts).
Note 4.For requirements for in-cable control and protection device (IC-CPD) for mode
2 charging, see GB/T 41589.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 1002, Single stage plugs and socket-outlets for household and similar purposes
- Types, basic parameters and dimensions
GB/T 1003, Single stage plugs and socket-outlets for household and similar purposes
- Types, basic parameters and dimensions
GB/T 2099.1, Plugs and socket-outlets for household and similar purposes - Part 1.
General requirements
GB/T 2423.3, Environmental testing - Part 3.Testing method - Test Cab. Damp heat,
steady state
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 7251.1-2013, Low-voltage switchgear and controlgear assemblies - Part 1.
General rules
GB/T 10963.1, Electrical accessories - Circuit-breakers for overcurrent protection
for household and similar installations - Part 1.Circuit-breakers for a.c. operation
GB/T 10963 (all parts), Electrical accessories - Circuit-breakers for overcurrent
protection for household and similar installations
GB/T 11918.1, Plugs, socket-outlet and couplers for industrial purposes - Part 1.
General requirements
GB/T 11918.2, Plug, socket-outlets and couplers for industrial purposes - Part 2.
Dimensional compatibility and interchangeability requirements for pin and contact-
tube accessories
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19596-2017,
GB/T 20234.4-2023, GB/T 29317-2021 and GB/T 32694-2021 as well as those given
below apply.
3.1 Charging/bi-directional charging system
3.1.1
charging
Powering the rechargeable electrical energy storage system of electric vehicle at a
calibrated voltage/current regulated from AC/DC supply network (power supply).
3.1.2
bi-directional charging
Adjust the AC or DC power supply network (power supply) to the appropriate
voltage/current to provide electric energy for the rechargeable electrical energy storage
system of electric vehicle, or using the electric vehicle as a power supply, adjust the
appropriate voltage/current and output it to the AC or DC power supply network (power
supply), or provide electric energy to loads, etc.
3.1.3
conductive charge
A method of charging the battery using electrical conduction.
[Source. GB/T 19596-2017, 3.4.2.1]
3.1.4
charging modes
Method to power electric vehicle by connecting the electric vehicle to supply network
(power supply).
Note. Mode 1, mode 2, mode 3 and mode 4 are also applicable to bi-directional
charging.
3.1.4.1
mode 1
While electric vehicle is connected to supply network (power supply), plugs and socket-
outlets in compliance with GB 2099.1 and GB 1002, as well as stage line, neutral line
and grounding protection conductor, are applied at the power supply side.
3.1.4.2
mode 2
While electric vehicle is connected to supply network (power supply), standard
plug/socket-outlet, as well as stage line, neutral line and grounding protection conductor,
is applied at the power supply side. Besides, in-cable control and protection device (IC-
CPD) is applied for charging connection.
4 Classification
4.1 By input characteristic of supply network
By the power supply system it connected to, EV supply equipment is classified into.
-- EV supply equipment connected to AC supply network;
-- EV supply equipment connected to DC supply network.
4.2 By type of connection of supply network
By the type of connection of the supply network it connected to, EV supply equipment
is classified into.
-- connected using standard plug cable assembly;
-- connected fixedly.
4.3 By type of current of energy transfer (side B)
By the type of current of energy transfer on side B, EV supply equipment is classified
into.
-- AC supply equipment;
-- DC supply equipment;
-- AC/DC supply equipment.
4.4 By service environment
4.4.1 Normal service environment
By the normal service environment, EV supply equipment is classified into.
-- indoor use;
-- outdoor use.
4.4.2 Special service environment
The classification may be conducted by the special service conditions specified in 15.2.
4.4.3 Location of installation and use
By the location of installation and use, EV supply equipment is classified into.
-- for locations with restricted access;
-- for locations with non-restricted access.
4.5 By output of power supply equipment
By output voltage, EV supply equipment is classified into.
-- AC rated voltage. mono-stage 220 V, three-stage 380 V;
-- DC rated maximum voltage. 500 V, 750 V, 1 000 V, 1 250 V;
-- DC operating voltage range. 200 V ~ 500 V, 200 V ~ 750 V, 200 V ~ 1 000 V*,
500 V ~ 1 250 V.
Note. * is the recommended operating voltage range for DC power supply equipment
using the control pilot function in Appendix C.
By output current, EV supply equipment is classified into.
-- AC rated current. 8 A,10 A,16 A, 32 A, 63 A;
-- DC rated continuous current. 10 A, 20 A, 32 A, 50 A, 80 A, 100 A, 125 A, 160 A,
200 A, 250 A, 315 A, 400 A, 500 A, 630 A, 800 A.
4.6 By installation way
By installation way, EV supply equipment is classified into.
-- fixed (wall-mounted. installed on wall, pole or other equivalent location, including
embedded installation and surface installation; scaffolding; floor-mounted.
installed on floor);
-- non-fixed (movable. such as movable charging equipment; portable. such as in-
cable control and protection device for mode 2, portable equipment for mode 4).
4.7 By electric shock protection
By electric shock protection, EV supply equipment is classified into.
-- Category I equipment. using basic insulation as basic protection measure and
protective bonding as fault protection measure;
-- Category II equipment. using basic insulation as basic protection measure and
supplementary insulation as fault protection measure, or using reinforced
insulation which can serve as both basic protection and fault protection.
Note. See GB/T 17045-2020 for the definitions of Categories I and II.
4.8 By charging mode
By the charging mode as specified in 3.1.4, EV supply equipment is classified into.
-- mode 1;
-- mode 2;
-- mode 3;
-- mode 4.
Note. More than one charging mode may coexist on the same EV supply equipment.
5 General requirements for charging system
5.1 Service conditions of electric vehicle charging mode
5.1.1 Mode 1
Mode 1 charging system uses standard plug to connect standard socket-outlet and shall
adopt single-stage AC power supply not greater than 8 A and 250 V during energy
transmission. The plug and socket-outlet conforming to GB 2099.1 and GB 1002 shall
be used at the supply side. stage line, neutral line and protective earthing conductor as
well as residual current protective device are used at the supply side. Protective earthing
conductor shall be provided from standard socket-outlet to electric vehicle.
Mode 1 shall not be used to charge electric vehicle.
5.1.2 Mode 2
Mode 2 charging system uses standard plug to connect standard socket-outlet and shall
adopt single-stage AC power supply during energy transmission. When 10 A standard
plugs and socket-outlets conforming to GB 2099.1 and GB 1002 or NB/T 10202 are
used at the supply side, the output shall not exceed 8 A. When plugs and socket-outlets
conforming to GB/T 11918.1 and GB/T 11918.2 are used at the supply side, the output
shall not exceed 32 A. Single-stage two-pole plugs and socket-outlets specified in GB/T
1002 shall not be used on the power side. Properly installed standard socket-outlets
including stage lines, neutral wires and protective earthing conductors shall be used at
the power supply side, and in-cable control and protection devices (IC-CPDs) shall be
used to connect the power supply network (power supply) and the electric vehicle. It
includes plugs that integrate additional functions such as temperature detection, residual
current protection, switching, etc., the rest of which complies with the requirements of
the above standards, and meets the test requirements of relevant standards.
Protective earthing conductor having residual current protection and overcurrent
protection functions shall be provided from standard socket-outlet to electric vehicle.
The control pilot function of mode 2 shall comply with Appendix A.
5.1.3 Mode 3
Mode 3 is applicable to that the power supply equipment connected to AC supply
network connects electric vehicle and AC supply network and special protection device
is installed on EV supply equipment.
When EV supply equipment has one or more mode 3 connecting point(s) (EV socket-
outlet) that can be used simultaneously, each connecting point shall be provided with
special protection device and shall ensure the independent operation of control pilot
function.
Mode 3 shall be provided with residual current protection function.
Case A connection, case B connection and case C connection are applicable to mode 3.
When single-stage power supply is adopted, the current shall not be greater than 32 A.
When three-stage power supply is adopted and the current is greater than 32A, case C
connection shall be adopted.
Note. Applicable to case D connection and case E connection of mode 3, which are
under consideration.
The control pilot function of mode 3 shall comply with Appendix A.
5.1.4 Mode 4
Mode 4, used for that electric vehicle is connected to DC power supply equipment, is
applied to the equipment permanently connected to supply network and the equipment
connected to supply network by standard plug cable assembly or by AC vehicle inlet.
Power supply equipment that uses standard plug cable assemblies or AC vehicle inlets
to connect to the AC power supply network shall comply with the regulations of NB/T
10902.
Mode 4 (including V2G) may be directly connected to AC supply network or DC supply
network.
Case C connection, case D connection and case E connection are applicable to mode 4.
Only case C connection is applicable to V2G.
The DC charging control pilot function of mode 4 shall comply with Appendix B or
Appendix C.
5.2 Functions provided by modes 2, 3 and 4
5.2.1 Function requirements of modes 2, 3 and 4
5.2.1.1 General
EV supply equipment shall at least provide the following control pilot functions.
-- continuous monitoring of the continuity of protective earthing conductor;
-- confirmation of the right connection of electric vehicle and power supply
equipment;
-- power supply control function;
-- outage control function of power supply equipment;
-- applicable maximum current allowed;
-- electric vehicle charge wake-up function.
When EV supply equipment is capable of performing energy transfer with multiple
electric vehicles simultaneously, it needs to ensure that the above control pilot functions
shall operate independently and normally at each charging connecting point.
5.2.1.2 Continuous monitoring of the continuity of protective earthing conductor
When charging at modes 2, 3 and 4, the electrical continuity of protective earthing
conductor shall be monitored continuously by EV supply equipment.
Note. The above requirement is not applicable to Category II equipment.
For mode 2, monitoring is carried out between electric vehicle and in-cable control and
protection device.
For modes 3 and 4, monitoring is carried out between electric vehicle and EV supply
equipment.
In case that the electrical continuity of protective earthing conductor is detected to be
lost during the energy transfer stage, the power supply circuit of EV supply equipment
shall be cut off, which shall meet the corresponding requirements of A.3.10.6, B.4.7.5
and C.7.13.3.
5.2.1.3 Confirmation of the right connection of electric vehicle and power supply
equipment
The supply equipment shall be able to determine that the vehicle connector or EV plug
is plugged into the vehicle inlet or EV socket-outlet correctly.
5.2.1.4 Power supply control function
Only when the control pilot function between EV supply equipment and electric vehicle
establishes correct relationship with the allowable power-on state signal, EV supply
equipment can supply electricity to electric vehicle. However, it shall not automatically
enter the discharge mode. Only when it receives a direct or indirect instruction from the
power supply network to allow discharge and the discharge conditions of the electric
vehicle are met, can the electric vehicle discharge to the power supply network through
the charging and discharging equipment.
6 Communication
In mode 4, digital communication shall be adopted to achieve data exchange between
electric vehicle and EV supply equipment, and the communication protocol shall
comply with GB/T 27930-2023.
For modes 2 and 3, digital communication is optional. Digital communication under
Modes 2 and 3 can be used for equipment for locations with restricted access, and digital
communication requirements for equipment for locations with non-restricted access are
under consideration.
7 Electric shock protection
7.1 General requirements
7.1.1 General
Electric shock is defined as the physiological effect produced by the flow of electric
current through a person or domestic animal. The physiological effect may be either
harmful (e.g., ventricular fibrillation, heat damages, and suffocation), or harmless (e.g.,
muscle responses and sensations).
Electric shock protective measures under single fault conditions shall be implemented.
Under the conditions of intended use and reasonably foreseeable misuse, at least one of
the following measures shall be taken to prevent the output circuit of the power supply
equipment from electric shock hazards and potential injuries.
-- basic protection (see 7.2);
-- fault protection (see 7.3);
-- complementary measures (see 7.5).
Basic protection shall be adopted as the protection under normal operating conditions,
and fault protection shall be adopted as the protection under single fault conditions.
7.1.2 Intended use and reasonably foreseeable misuse
Intended use and reasonably foreseeable misuse shall meet.
-- hazardously live parts shall not be accessible, and accessible conductive parts shall
not be hazardously live; and
-- hazardous current shall not occur when the charging coupler is disconnected.
7.1.3 Limits of contact current or contact voltage
Under normal operating conditions and single fault conditions, hazardous electric shock
to ordinary person shall be avoided by one of the following measures.
-- limiting contact current and contact energy; or
-- limiting contact voltage.
Under normal operating conditions and single fault conditions, the human body
impedance corresponding to the water-wet conditions specified in 3.1.8 of GB/T
13870.1-2022 shall also be considered.
Note. The skin of people who sweat or after soaking in sea water are not taken into
account.
7.1.4 Threshold of perception and startle reaction
During intended use and reasonably foreseeable misuse, protective measures shall be
taken to avoid startle reactions before, during and after energy transfer, under normal
operating conditions and under single fault conditions. Under normal operating
conditions, there may be perception and reaction.
Note 1.Curve a (the boundary between AC1/AC2, DC1/DC2) in Table 11 and Table
13 in GB/T 13870.1-2008 corresponds to the threshold of startle reaction in
this document.
Note 2.Intended use cases include but are not limited to holding energy transfer
components, such as charging cable, power supply/vehicle connector and
power supply/vehicle inlet, cable detection, pre-charging, end of energy
transfer, ordinary person or animals entering or leaving electric vehicles,
opening and retrieving items from vehicle trunks/luggage compartments or
other storage spaces, touching electric vehicle chassis, touching exposed metal
parts of supply equipment.
For the current path, it shall be from fingers to feet at the charging coupler and from
hands to feet at the chassis.
A means of protection shall be provided to limit contact current, such that the steady-
state contact current between simultaneously accessible conductive parts shall not
exceed.
-- 0.5 mA AC/2 mA DC, under normal operating conditions;
-- 3.5 mA AC/10 mA DC, under single fault conditions.
When the contact current of Class I equipment exceeds 3.5 mA (effective value), the
contact current requirements shall comply with the provisions of 12.1.2.
For DC charging, additional protection shall be provided so that when the basic
protection and the fault protection of the DC power supply circuit fail at the same time,
the steady-state contact current shall not exceed the DC2 limit value (line b) specified
in Figure 22 and Table 13 of GB/T 13870.1-2022.
The power supply equipment shall be able to limit the discharge energy so that the
discharge current/discharge energy shall not exceed.
-- 5 μJ, under normal operating conditions;
-- 0.5 mJ, under single fault conditions.
Note 3.This value is derived from 5.2.7b in GB/T 17045-2020.
For cable assembly, additional protection shall be provided so that when basic
protection and cable assembly fault protection fail simultaneously, the steady-state
contact current shall not exceed the C1 limit in Figure 20 of GB/T 13870.1-2022 and
Figure 20 of GB/T 13870.2-2016 respectively.
The following parameters shall be used.
-- According to GB/T 13870.1-2022, the human body impedance is 575 Ω;
-- According to ISO 17409.2020, the maximum Y capacitance of electric vehicles;
-- The critical point of asymmetric/symmetric insulation resistance value in the
energy transfer stage is 100 Ω/V.
7.2 Basic protection
7.2.1 General
Basic protection is adopted for power supply equipment to prevent ordinary person
from contacting live parts. One or more of the measures specified in 7.2.2, 7.2.3, 7.2.4
and 7.2.5 shall be taken.
7.2.2 Basic insulation of live parts for protection
Basic insulation is adopted for the live parts of the power supply equipment, which shall
comply with the provisions of 4.4.3.2 in IEC 62477-1.2016.
Basic insulation shall provide protection by solid insulation or appropriately designed
electrical clearance and/or creepage distance.
Any accessible conductive part that is not insulated from live parts as required is
considered a hazardous live part.
Basic insulation shall be designed and tested to withstand impulse voltages and
temporary overvoltage of the circuits to which it is connected.
The test shall be carried out in accordance with 5.2.3.2 and 5.2.3.4 of IEC 62477-1.2016.
7.2.3 Protection with enclosures or barriers
The power supply equipment adopts an enclosure or barrier protection method, which
shall comply with the provisions of 4.4.3.3 in IEC 62477-1.2016.
Enclosures shall be suitable for use in their intended environment.
Power supply equipment shall have sufficient mechanical strength and be constructed
so that it will not cause hazards during its expected use and misuse during its expected
life.
The enclosure shall be opened or the barrier removed by.
-- using tools or keys;
-- after de-energizing the hazardous live part.
7.2.4 Limiting voltage protection
Using limiting voltage for basic protection shall meet the following conditions.
a) The steady-state contact voltage shall not exceed the limits specified in Table 1
during normal operation.
b) The steady-state contact voltage under single fault conditions shall not exceed the
limits specified in Table 2.
c) The non-recurring DC contact voltage during normal operation shall not exceed
the limits specified in Table 1.
d) The non-recurrent DC contact voltage from fingertips to toes under single fault
conditions shall not exceed the limits specified in Figure 11;
e) This voltage is provided by one of the following sources.
1) safety isolation transformer for auxiliary circuit (including control pilot);
2) voltage source providing the same safety level as the safety isolation
transformer;
3) electrochemistry (such as batteries).
8 Connection between electric vehicle and EV energy transfer
8.1 General requirements
The requirements for the physical transmission electrical interface between electric
vehicle and EV supply equipment are specified in Chapter 8.The content of Chapter 8
applies to charging a single vehicle connector with an electric vehicle. Charging
multiple vehicle connectors with the same electric vehicle shall be negotiated separately
between the user and the manufacturer.
When the power supply equipment is connected to multiple electric vehicles at the same
time, there shall be a design mechanism to ensure that the electrical power supply
circuits corresponding to each electric vehicle remain galvanic separation at any time.
Multi-charging interface DC power supply equipment shall comply with the provisions
of Appendix F.
8.2 Neutral line
In the AC electric vehicle charging system, the AC supply network shall be provided
with neutral line and connected to standard socket-outlet in case A connection.
In case B connection and case C connection, the neutral line shall be connected to
vehicle connector.
8.3 Contact sequence
The contact sequence of connection and disconnection shall meet the relevant
requirements of 6.3.1.3 in GB/T 20234.1-2023.
8.4 Explanation for functionality of mode 1 and mode 2 EV plug and socket-outlet
and vehicle coupler
The mode 1 and mode 2 standard plug/socket-outlet used for connecting to the supply
network (power supply) shall meet the requirements of GB/T 1002 or GB/T 1003 and
GB/T 2099.1, or GB/T 11918.1, or NB/T 10202, and vehicle coupler /vehicle inlet
connected to the electric vehicle shall meet the requirements of GB/T 20234.2-2015.
8.5 Explanation for functionality of mode 3 EV plug and socket-outlet and vehicle
coupler
The mode 3 EV plug and socket-outlet and vehicle coupler shall meet the requirements
of GB/T 20234.2-2015.
Where single-stage power supply is adopted, AC supply network (power supply)
conductor shall be connected to that between stage 1 (L1) and neutral line (N); L2 and
L3 may be left or unconnected. Where three-stage power supply is adopted, AC supply
network (power supply) conductor shall be connected to that between stage 1 (L1),
stage 2 (L2), stage 3 (L3) and neutral line (N).
8.6 Explanation for functionality of mode 4 vehicle coupler
Mode 4 vehicle coupler is only used for providing DC electricity and shall meet the
requirements of GB/T 20234.3-2023 or GB/T 20234.4-2023.
The interface parameters of each DC vehicle described in GB/T 20234.3-2023 shall
only be used for the charging system designated in Appendix B.
The interface parameters of each DC vehicle described in GB/T 20234.4-2023 shall
only be used for the charging system designated in Appendix C.
9 Vehicle adaptor
For Mode 4, a vehicle adapter can be used to connect the vehicle connector and vehicle
inlet. The vehicle adapter shall comply with the provisions of Appendix D in GB/T
20234.4-2023, and the corresponding control pilot circuit shall comply with the
provisions of Appendix G. Vehicle adapters shall be clearly labeled with the conditions
under which their use is permitted by the electric vehicle manufacturer or operator.
Note. See Appendix H for other special vehicle adapters.
10 Special requirements for vehicle coupler and EV plug and
socket-outlet
10.1 General requirements
In the application where rated continuous current is greater than 16 A, the EV socket-
outlet, vehicle inlet and mode 4 vehicle connector shall be arranged with temperature
monitoring device; power supply equipment and electric vehicle shall have temperature
monitoring and over-temperature protection function at the interface, and shall meet
relevant requirements in GB/T 20234.
For electric vehicle power supply equipment in Mode 4 and using the control pilot
function of Appendix C, the thermal management of the cable assembly shall also meet
the requirements of C.7.9.
Note. Where temperature monitoring device is installed at the side of standard plug in
mode 2, patent issue may be involved.
10.2 Cord extension set
Except cable assembly, cord extension set shall not be used to connect electric vehicle
and EV supply equipment.
10.3 Breaking capacity
The breaking capacity of vehicle coupler and EV plug and socket-outlet shall meet the
requirements of 6.3.11 and 7.22 in GB/T 20234.1-2023.
Specific method may be used to avoid load disconnection for connector or the system
with interlock function. If necessary, the function may be integrated into self-locking
device.
Fo......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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