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GB/T 18488.2-2015 (GB/T18488.2-2015)

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GB/T 18488.2-2015: PDF in English (GBT 18488.2-2015)

GB/T 18488.2-2015
ICS 43.040
T 35
Replacing GB/T 18488.2-2006
Drive Motor System for Electric Vehicles -
Part 2. Test Methods
Jointly Issued by. General Administration of Quality Supervision,
Inspection and Quarantine of the People's Republic of
Standardization Administration of the People's
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative References ... 6 
3 Terms and Definitions ... 7 
4 Test Preparation ... 7 
5 General Test Items ... 9 
6 Temperature Rise Test ... 17 
7 Input/Output Characteristic Test ... 19 
8 Safety Test ... 30 
9 Environmental Adaptation Test ... 30 
10 Reliability Test ... 33 
Appendix A (Informative) Correction Methods for Working Torque
Measurement Result of Drive Motor System ... 34 
GB/T 18488 "Drive Motor System for Electric Vehicles" is divided into two parts.
- Part 1. Specification;
- Part 2. Test Methods.
This Part is Part 2 of GB/T 18488.
This Part is drafted according to the rules given in GB/T 1.1-2009.
This Part replaces GB/T 18488.2-2006 “The Electrical Machines and Controllers for
Electric Vehicles - Part 2. Test Methods". Compared with GB/T 18488.2-2006, in
addition to editorial changes, the main technical changes of this Part are as follows.
- The normative references were added; and the editions of some standards were
- The terms and definitions, test environment condition, test power supply voltage
stabilization requirements, and requirements for signal shielding were added;
- The accuracy of instrument was modified; the measuring instrument was added;
the requirements for range ability of measuring instrument were deleted; and the
requirements for measurement accuracy were added;
- The wiring requirements were modified; the specification for wiring during test
shall be consistent with the practical wiring in vehicle;
- The requirements for the mechanical strength of drive motor controller housing
were modified; and the applied mass was determined according to equivalent
- The test methods for cooling circuit sealing property of liquid cooling system were
modified; and the accuracy of test medium and testing instrument was specified;
- The test methods for cold state DC resistance of drive motor stator winding were
modified; the bridge method and voltmeter ammeter method were deleted; the
micro-Ohmmeter measuring method was specified; and the distinguishing
method for consistency of environment temperature was added;
- The insulation resistance test methods were modified; and the measurement
methods for drive motor stator winding against insulation resistance of
temperature sensor and against insulation resistance of drive motor controller
were added;
- The withstand voltage test was modified; the short time rise withstand voltage
test; armature winding insulated DC leakage current test and DC withstand
voltage test were deleted; the interturn surge withstand voltages of drive motor
excitation winding and brush DC motor armature winding were added; the power-
frequency withstand voltage test methods for the drive motor winding against
housing, the drive motor winding against temperature sensor, and the drive motor
winding against drive motor controller were specified;
- The temperature rise test methods were modified; the measuring point, recording
time and calculation formula for temperature rise were specified; the
determination of cooling medium temperature and extrapolation calculation
method for winding resistance were added;
- The measurement of efficiency was modified; and the power of auxiliary device
of drive motor system involved in calculation was specified;
- The maximum working speed test methods were modified; the situation of cold
state measurement was deleted; and the data recording time was specified;
- The environmental adaptation test methods were modified; the test methods and
test contents of low temperature test, high temperature test and damp heat test
were changed; and the salt spray test time was modified;
- The electromagnetic compatibility test method was modified; and the test shall
be conducted according to the test method provided by the manufacturer or the
- The correction of test result was modified, and was adjusted to be informative
- The speed-torque characteristics and the selection methods for measuring point
and measurement parameter in the process of efficiency test were added; and
the test methods were detailed;
- The new test items such as appearance, overall and installation dimensions,
quality, working voltage range, continuous torque, continuous power, peak
torque, peak power, high-efficient working area, maximum efficiency, control
accuracy, response time, drive motor controller current, discharge time of drive
motor controller support capacitance, vibration resistance, and reliability were
- The test methods for the controller overload capacity, noise, vibration, contact
current testing, voltage fluctuation and peak power determination were deleted.
This Part was proposed by the Ministry of Industry and Information Technology of the
People's Republic of China.
This Part shall be under the jurisdiction of the National Technical Committee on
Automobiles of Standardization Administration of China (SAC/TC 114).
Drive Motor System for Electric Vehicles -
Part 2. Test Methods
1 Scope
This Part of GB/T 18488 specifies the instruments and meters, test preparation and
each test method used for the test of drive motor system for electric vehicles.
This Part is applicable to the drive motor system for electric vehicles, drive motor and
drive motor controller. The vehicle motor only having power generation function and its
controller may implement this Part by reference.
2 Normative References
The following documents are essential for the application of this document. For dated
reference, only the dated edition applies to this document. For undated references, the
latest edition (including any amendments) applies to this document.
GB 755-2008 Rotating Electrical Machines - Rating and Performance
GB/T 2423.1-2008 Environmental Testing - Part 2. Test Methods - Tests A.
GB/T 2423.2-2008 Environmental Testing - Part 2. Test Methods - Tests B. Dry
GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products
- Part 2. Tests Methods - Test Fc. Vibration (Sinusoidal)
GB/T 2423.17-2008 Environmental Testing for Electric and Electronic Products
- Part 2. Test Method - Test Ka. Salt Mist
GB/T 2900.25 Electrotechnical Terminology - Rotating Electrical
GB/T 2900.33 Electrotoechnical Terminology - Power Electronics
GB/T 3859.1-2013 Semiconductor Converters - General Requirements and
Line Commutated Converters - Part 1-1. Specification of
Basic Requirements
GB/T 4208-2008 Degrees of Protection Provided by Enclosure (IP Code)
GB/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of
Rotating Electrical Machines (IP code) - Classification
GB/T 13422-2013 Semiconductor Converters - Electrical Test Methods
GB/T 18488.1-2015 Drive Motor System for Electric Vehicles Part 1.
GB/T 19596 Terminology of Electric Vehicles
GB/T 22719.1-2008 Interturn Insulation of Random-wound Winding for AC
Low-voltage Electrical Machines - Part 1. Test Methods
GB/T 28046.3-2011 Road Vehicles - Environmental Conditions and Testing for
Electrical and Electronic Equipment - Part 3. Mechanical
GB/T 29307-2012 The Reliability Test Methods of Drive Motor System for
Electric Vehicles
3 Terms and Definitions
The terms and definitions defined in GB/T 2900.25, GB/T 2900.33, GB/T 19596 and
GB/T 18488.1 are applicable to this document.
4 Test Preparation
4.1 Test environment conditions
Unless otherwise specified, all the tests shall be carried out under the following
a) Temperature. 18°C~28°C;
b) Relative humidity. 45%~75%;
c) Atmospheric pressure. 86 kPa~106 kPa;
d) Altitude. not exceeding 1,000 m; if it exceeds 1,000 m, it shall be in accordance
with the relevant requirements of GB 755-2008.
4.2 Selection of test instrument
4.2.1 Accuracy of instrument
The accuracy or error of instrument shall not be inferior to the requirements specified
in Table 1, and shall meet the accuracy requirement of actually measured parameter;
especially, the instrument and meter for measurement of electrical parameter shall be
able to meet the accuracy and waveform requirements for the measurement of
4.6 Signal shielding
In order to ensure that the drive motor system can be normally tested, if necessary, the
manufacturer shall simulate the relative signal or...
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.