NB/T 33008.2-2018 English PDF (NB/T33008.2-2018)

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NB/T 33008.2-2018: Inspection and test specifications for electric vehicle charging equipment. Part 2: A. C. charging spot
NB/T 33008.2-2018
ENERGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.200
K 81
Filing number: 68879-2019
Replacing NB/T 33008.2-2013
Inspection and test specifications for electric vehicle
charging equipment - Part 2: A.C. charging spot
ISSUED ON: DECEMBER 25, 2018
IMPLEMENTED ON: MAY 01, 2019
Issued by: National Energy Administration
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 7 
4 Inspection rules ... 7 
5 Test method ... 9 
Inspection and test specifications for electric vehicle
charging equipment - Part 2: A.C. charging spot
1 Scope
This part specifies the inspection rules and test methods for AC charging spot
of electric vehicle (hereinafter referred to as charging spot).
This part applies to charging spot in connection mode A, connection mode B,
and connection mode C in charging mode 3.
This part applies to type testing, ex-factory inspection, arrival acceptance of
charging spots.
This part applies to charging spots as specified in NB/T 33002-2018.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 2421.1-2008 Environmental testing for electric and electronic
products - General and guidance
GB/T 2423.1-2008 Environmental testing for electric and electronic and
electronic products - Part 2: Test methods - Tests A: Cold
GB/T 2423.2-2008 Environmental testing for electric and electronic products
- Part 2: Test methods - Tests B: Dry heat
GB/T 2423.4-2008 Environmental testing for electric and electronic products
- Part 2: Test method - Test Db: Damp heat, cyclic (12h + 12h cycle)
GB/T 2423.17-2008 Environmental testing for electric and electronic
products - Part 2: Test method - Test Ka: Salt mist
GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB 4824-2013 Industrial, scientific and medical equipment - Radio-
frequency disturbance characteristics - Limits and methods of measurement
GB/T 7251.1-2013 Low-voltage switchgear and control gear assemblies -
Part 1: General
GB 16935.1 Insulation coordination for equipment within low-voltage
systems - Part 1: Principles, requirements and tests
GB/T 17625.2 Electromagnetic compatibility (EMC) - Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply
systems, for equipment with rated current ≤ 16 A per phase and not subject
to conditional connection
GB/T 17625.7 Electromagnetic compatibility - Limits - Limitation of voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current ≤ 75 A and subject to conditional
connection
GB/T 17626.2 Electromagnetic compatibility (EMC) - Testing and
measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility - Testing and measurement
techniques - Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4 Electromagnetic compatibility - Testing and measurement
techniques - Electrical fast transient/burst immunity test
GB/T 17626.5 Electromagnetic compatibility - Testing and measurement
techniques - Surge immunity test
GB/T 17626.6 Electromagnetic compatibility - Testing and measurement
techniques - Immunity to conducted disturbances induced by radio-
frequency fields
GB/T 17626.11 Electromagnetic compatibility - Testing and measurement
techniques - Voltage dips, short interruptions and voltage variations
immunity tests
GB/T 17626.34 Electromagnetic compatibility - Testing and measurement
techniques - Voltage dips, short interruptions and voltage variations
immunity tests for equipment with mains current more than 16 A per phase
GB/T 18487.1-2015 Electric vehicle conductive charging system - Part 1:
General requirements
GB/T 18487.2-2017 Electric vehicle conductive charging system - Part 2:
EMC requirements for off-board electric vehicle supply equipment
GB/T 20234.1-2015 Connection set for conductive charging of electric
vehicles - Part 1: General requirements
a) Frequency: 50 Hz ± 0.5 Hz;
b) AC power voltage: 220V / 380V, allowable deviation ± 5%;
c) AC power waveform: sine wave, waveform distortion factor is not greater
than 5%;
d) Imbalance of AC power system: not more than 5%.
5.1.4 Requirements for test equipment
Unless otherwise specified, the instruments used in the test shall meet the
following requirements:
a) The measuring instruments and meters used shall pass the metrological
verification or calibration; the certificate shall be valid;
b) The measuring range of measuring instruments and meters shall cover
the measuring range being measured;
c) The measurement uncertainty of the test instrument, meter or system shall
be better than 1/3 of the allowable error being measured;
d) The measured value shall be more than 1/5 of the range of the selected
instrument and meter.
5.1.5 Test load
It is recommended to use RLC type load or electronic load.
5.2 General inspection
5.2.1 Visual inspection
Visually check that the housing of the charging spot (including the charging
connection device) shall be flat, without obvious defects such as bumps,
scratches, deformation, etc.; the surface coating and plating shall be uniform
and not fall off; the parts (including the charging connection device) shall be
fastened and reliable, without such defects and damages as rust, burr, crack.
5.2.2 Marking inspection
Visually check the position and content of the charging spot’s nameplate for
correctness and completeness. The content of the nameplate shall comply with
8.1.1 of NB/T 33002-2018. Visually check the correctness and integrity of the
charging spot’s wiring, grounding and safety signs. Observe and use a piece of
absorbent cotton soaked with distilled water to wipe it 15 rounds in about 15 s;
then use a piece of absorbent cotton soaked in gasoline to wipe it for 15 rounds
in about 15 s; apply the pressure of about 2 N/cm2 to the absorbent cotton on
monitoring system or operation management system as specified by the
manufacturer are connected to the test system. During the charging process,
the charging spots shall be able to communicate according to the agreed
protocol requirements.
5.3.2 Inspection of charging connection device
The charging connection device configured for the charging spot shall have
certification materials that comply with GB/T 20234.1-2015 and GB/T 20234.2-
2015; or follow the methods as specified in 6.2 of GB/T 34657.1-2017 to double
check the power supply socket (connection method A or the connection method
B), the structural size of the vehicle plug (connection method C), the plug space
size (connection method C).
5.3.3 Lockout device inspection
Connect the charging spot to the test system and start charging. During the
charging process, perform the test according to the following steps:
a) For the charging spot which uses the connection method A or connection
method B, when the rated current of the charging spot is more than 16A,
the power supply socket shall be equipped with the electronic lockout
device with position feedback function.
b) The charging connection device is fully con...