GB/T 44852-2024 PDF English
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GB/T 44852-2024: Electric motorcycles and electric mopeds - Safety requirements for conductive connection to external electric power supply
---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/GBT44852-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.140
CCS T 80
Electric motorcycles and electric mopeds - Safety
requirements for conductive connection to external electric
power supply
Issued on. OCTOBER 26, 2024
Implemented on. MAY 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 6
4 Safety requirements... 18
5 Test methods... 41
Annex A (informative) Charging types... 47
Annex B (normative) Requirements for connection of motorcycles to DC supply
equipment compliant with IEC 61851-25.2020... 51
Annex C (normative) Requirements for connection of motorcycles to DC supply
equipment in accordance with IEC/TS 61851-3 (all parts)... 54
Bibliography... 55
1 Scope
This document specifies the safety requirements and test methods for conductive charge
of electric motorcycles and electric mopeds (hereinafter referred to as "motorcycles")
when conductively connected to external electric power supply.
This document applies to the design, production and inspection of the on-board
charging system, off-board charging system (as shown in Figures A.4 and A.5), and
motorcycle off-board charger assembly (as shown in Figures A.4 and A.5) between the
standard plug/plug (case A connection) or vehicle inlet (case B connection and case C
connection) on the motorcycle vehicle and the REESS circuit (such as Figure A.2 and
Figure A.3 in Annex A).
This document does not apply to external electric power supply and supply equipment
for motorcycles.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 1002, Single phase 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 4706.18, Safety of household and similar electrical appliances -- Part 18.
Particular requirements for battery chargers
GB/T 14048.4, Low-voltage switchgear and control gear -- Part 4-1.Contactors
and motor-starters -- Electromechanical contactors and motor-starters (Including
motor protector)
GB/T 16895.5-2012, Low-voltage electrical installations -- Part 4-43.Protection
for safety -- Protection against overcurrent
GB/T 16895.23, Low-voltage electrical installations -- Part 6.Verification
GB/T 16935 (all parts), Insulation coordination for equipment within low-voltage
supply systems
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 19596-
2017, GB 18384-2020, GB/T 18487.1-2023 as well as the followings apply.
3.1 General
3.1.1 rechargeable electrical energy storage system; REESS
A rechargeable electrical energy storage system that can provide electrical energy.
[Source. GB 18384-2020, 3.1]
3.1.2 removable REESS
A rechargeable electrical energy storage system that is moved/removed from a
motorcycle by hand or with the aid of a device/equipment.
3.1.3 maximum working voltage
The voltage at which the effective value of the AC voltage (r.m.s.) or the maximum
value of the DC voltage may occur in the power system under normal working
conditions.
A circuit, part of a circuit or an electrical component having a maximum working
voltage not exceeding 30 V (AC, r.m.s.) or a voltage not exceeding 60 V (DC).
[Source. GB/T 19596-2017, 3.1.3.2.18, modified]
3.2 Charging
3.2.1 charging
Adjust the AC or DC power grid (power supply) to the appropriate voltage/current to
provide power to the motorcycle's rechargeable electrical energy storage system.
3.2.2 conductive charge
A method of charging a rechargeable electrical energy storage system using electrical
conduction.
4 Safety requirements
4.1 General requirements
The design of the on-board charging system shall meet the following conditions.
4.2 Connection between standard plug/plug or vehicle coupler and vehicle
rechargeable electrical energy storage system
4.2.1 General requirements
4.2.1.3.4 for requirements.
4.2.1.2 General requirements for connection
4.2.1.2.1 Connection and disconnection
The interface or plug used by the manufacturer is specified as follows.
4.2.1.3.4 Requirements for separate grounding
In the case of charging type A, the on-board charger shall at least meet the following
conditions to complete this connection.
4.2.1.3.5 Requirements for partial grounding
In the case of charging type A, the on-board charger shall meet the following conditions
to complete this connection.
4.2.1.4 Special requirements for standard plugs/plugs and vehicle inlets
4.2.1.4.1 Requirements for connecting compatible EVSE
The standard plug for charging mode 2 (case A connection) shall comply with the
requirements of GB/T 1002 and GB/T 2099.1.
4.2.1.4.2 Requirements for connecting motorcycle supply equipment
When the vehicle inlet is not equipped with the on-load disconnection function and is
not accidentally disconnected, the motorcycle shall be provided with an appropriate
locking device or retaining device.
4.2.1.5 Vehicle requirements during charging
If the plug is connected to an external electric power supply, the motorcycle shall not
be moved by its own drive system.
4.2.2 AC connection
4.2.2.1 Requirements for connection to the AC power supply network (power
supply)
4.2.2.2 AC connecting point connection and/or disconnection
4.2.2.2.1 Connection sequence
If there is a ground connection, it shall be connected before the phase and neutral
connections.
The sequence of other connecting points, if any, shall be specified by the vehicle
manufacturer.
4.3 Protection against electric shock
4.3.1 General requirements
4.3.1.1 General requirements for circuit connection parts
If not otherwise specified, circuits consisting of conductively connected parts having
different maximum working voltages shall be classified according to the maximum
working voltage.
5 Test methods
5.1 General conditions
If there are no special provisions, the test objects shall be the power supply circuit and
off-board charger assembly on the motorcycle.
5.2 Test for degree of protection
Compliance shall be checked by inspection or test as specified in GB/T 30038.
5.3 Withstand voltage test
5.3.3 Test steps
5.3.3.1 The test shall include the shield and the shell.
5.3.3.2 The voltage class B circuit setting requirements for the onboard part of the
vehicle power supply circuit are as follows.
5.3.3.3 After the preparation is completed, apply the test voltage specified in 5.3.4
between the live parts of the voltage class B circuit of the equipment under test that are
connected to each other and the electric chassis.
5.3.4 Test voltage
5.3.5 Withstand voltage of DC part of voltage class A
If double insulation and/or reinforced insulation is applied between the AC or DC part
of voltage class B and the DC part of voltage class A, a test voltage of 2 Ur +500 V (AC,
r.m.s.) with a frequency of 50 Hz and a duration of 2 min shall be applied only between
live parts and other exposed metal parts, where Ur is the rated voltage of the voltage
class A circuit in volts (V).
5.4 Surge current test
5.4.1 General requirements
The surge current compliance shall be checked according to the following test
requirements.
5.4.2.3 The current shall be measured continuously during the test.
5.4.2.4 The peak voltage of the power supply shall be measured.
5.4.2.5 If the power supply cannot provide the rated voltage of the equipment under test,
the measurement can be carried out at any voltage within the rated voltage range and
the result is obtained based on the corresponding calculation.
5.4.2.6 If measurements are repeated, sufficient time shall be allowed between
consecutive measurements to ensure that the capacitance of the equipment under test is
discharged.
5.4.2.7 When the power supply system impedance is not greater than 150 mΩ, the surge
current limit requirements of event 1 and event 2 shall be met.
5.5 Contact current test
The contact current test shall be carried out in accordance with the provisions of 13.6
of GB/T 43332-2023.
5.6 Insulation resistance test
5.6.1 Pretreatment and preparation
5.6.1.1 Before testing, the equipment under test shall be preconditioned at a temperature
of 5°C ±2°C for at least 8 h. It shall then be placed in an environment of 23°C ±5°C,
relative humidity of 85%~100% and atmospheric pressure of 86 kPa~106 kPa for 8 h
for preparation.
5.6.2 Insulation resistance measurement
The insulation resistance of the onboard part of the vehicle power supply circuit can be
measured using one of the following methods.
5.7 Test of isolation resistance monitoring system
Connect the resistor specified by the vehicle manufacturer between the monitored
circuit terminal and the electric chassis, and the isolation resistance monitoring system
shall be triggered to warn. The resistor shall not cause the insulation resistance to be
lower than the minimum insulation resistance specified in 4.5.2.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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