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NB/T 33008 Inspection and test specifications for electric vehicle charging equipment consists of 2 parts:
——Part 1: Off-board charger;
——Part 2: A.C. charging spot
This part is Part 2 of NB/T 33008.
This part replaces NB/T 33008.2-2013 Inspection and test specifications for electric vehicle charging equipment Part 2: A.C. charging spot. In addition to editorial changes, the following main technical changes have been made with respect to NB/T 33008.2-2013:
——Clause 1 "Scope" is modified to clarify the relationship of this standard with NB/T 33002-2018 Specification for electric vehicle AC charging spot;
——"Arrival acceptance" and Table 1in the clause "4 Inspection rules" are modified and the test item table is updated;
——"General inspection” in the Clause 5 “Test method” is modified, which includes the addition of appearance inspection (see Sub-clause 5.2.1), sign inspection (see Sub-clause 5.2.2), basic composition inspection (see Sub-clause 5.2.3), mechanical switch equipment inspection (see Sub-clause 5.2.4) and anti-theft measures inspection (see Sub-clause 5.2.5);
——"Functional test" in the Clause 5 "Test method" has been modified, which includes the addition of inspection for connection set for charging (see Sub-clause 5.3.2), locking device inspection (see Sub-clause 5.3.3) and metering function test (see Sub-clause 5.3.6);
——"Safety requirement test" in the Clause 5 "Test method" is modified, which includes output short circuit protection test (see Sub-clause 5.4.1), contactor adhesion monitoring test (see Sub-clause 5.4.4), contact current test (see Sub-clause 5.4.5) and leakage protection test (see Sub-clause 5.4.6);
——"Control pilot test" in the Clause 5 "Test method" is modified, which includes charging control state test (see Sub-clause.5.14.1), charging connection control sequence test (see Sub-clause 5.14.2), control pilot voltage limit test (see Sub-clause 5.14.3), protective grounding continuity test (see Sub-clause 5.14.4), control pilot signal abnormality test (see Sub-clause 5.14.5) and Switch S2 disconnection test (see Sub-clause 5.14.6);
——Charging mode and connection mode inspection (see Sub-clause 5.5), cable management and storage inspection (see Sub-clause 5.6), internal temperature rise test (see Sub-clause 5.7), allowable temperature test (see Sub-clause 5.8), electrical clearance and creepage distance test (see Sub-clause 5.10), grounding test (see Sub-clause 5.12), standby power consumption test (see Sub-clause 5.13), noise test (see Sub-clause 5.15), anti-salt spray test (see Sub-clause 5.18), anti-rust (anti-oxidation) test (see Sub-clause 5.19), alternating wet heat test (see Sub-clause 5.22) are added , and electromagnetic compatibility test (see Sub-clause 5.23) is modified.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This part was proposed by the China Electricity Council.
This standard is under the jurisdiction of the Standardization Technical Committee 3 on Electric Vehicle Charging Infrastructure of National Energy Administration (NEA/TC 3).
The previous editions replaced by this part are as follows:
——NB/T 33008.2-2013.
During the implementation of this standard, the relevant opinions or suggestions, whenever necessary, can be posted or passed on to the Standardization Center of the China Electricity Council (No. 1, 2nd Lane, Baiguang Road, Beijing 100761).
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 vehicles (hereinafter referred to as “charging spot”).
This part is applicable to charging spot with Case A connection, Case B connection and Case C connection in Charging Mode 3.
This part is applicable to type inspection, end-of-manufacturing inspection and arrival acceptance of charging spot.
This part is applicable to charging spot specified in NB/T 33002-2018.
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 2421.1-2008 Environmental testing for electric and electronic products - General and guidance
GB/T 2423.1-2008 Environmental testing for electric and electronic products - Part 2: Test method - Tests A: cold
GB/T 2423.2-2008 Environmental testing for electric and electronic products - Part 2: Test method - Test B: high temperature
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 (ISM) radio-frequency equipment - Disturbance characteristics - Limits and methods of measurement
GB/T 7251.1-2013 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
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 ≤16A 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
GB/T 20234. 2-2015 Connection set for conductive charging of electric vehicles - Part 2: AC charging coupler
GB/T 28569 Electric energy metering for electric vehicle AC charging spot
GB/T 29317-2012 Terminology of electric vehicle charging/battery swap infrastructure
GB/T 34657.1-2017 Interoperability test specification of electric vehicle conductive charging - Part 1: Supply equipment
NB/T 33002-2018 Specification for electric vehicle AC charging spot
3 Terms and definitions
For the purpose of this document, the terms and definitions defined in GB/T 18487.1-2015, GB/T 18487.2-2017, GB/T 29317, NB/T 33002-2018.
4 Inspection rules
4.1 Inspection classification
The inspection of products can be classified intro type inspection, end-of-manufacturing inspection and arrival inspection.
4.1.1 Type inspection
In the following cases, the products must be subject to type inspection:
a) products newly put into production (including products produced at transferred factories) shall be subjected to type test before production appraisal;
b) in case of change in and impact on product performance due to the changes in design, process or major components, type tests shall be conducted before the products are into production;
c) the products whose production has been discontinued for more than two years shall be subject to type test before they are put into production again.
4.1.2 End-of-manufacturing inspection
Each product shall be subject to end-of-manufacturing inspection. Only after being confirmed by the quality inspection department of the manufacturer, can it be delivered upon provision of a certificate proving that the product is acceptable.
4.1.3 Arrival acceptance
The receiving units should inspect the received products before use, and the products can only be put into use upon passing the acceptance. The specific acceptance sampling plan shall be decided by receiving units voluntarily.
4.2 Test items
The test items of AC charging spot are shown in Table 1.
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Table 1 Test item table of AC charging spot
S.N. Test item Type test End-of-manufacturing inspection Corresponding to technical requirements in NB/T 33002-2018
1 General inspection
Appearance inspection √ √
Sign inspection √ √ 8.1
Basic composition inspection √ √ 4
Mechanical switch equipment inspection √ — 7.13
Anti-theft measures inspection √ — 7.3.4
2 Functional test
Communication function test √* — 6.2
Inspection for connection set for charging √ √ 6.3
Locking system inspection √ √ 6.4
Display function test √ √ 6.5.1
Input function test √* √* 6.5.2
Metering function test √* — 6.6
3 Safety requirement test
Output short circuit protection test √ — 7.7.1
Over-temperature protection test √ — 7.7.2
Emergency stop protection test √* √* 7.7.4
Contactor adhesion monitoring test √ √ 7.7.8
Contact current test √ — 7.7.10
Leakage protection test √ — 7.7.11
4 Charging mode and connection mode inspection √ — 6.8
5 Cable management and storage inspection √ —
6 Internal temperature rise test √ — 7.4
7 Allowable temperature test √ — 7.5.1
8 Electric shock protection test
Direct contact protection test √ — 7.5.2
Door-opening protection test √* √*
Power supply input failure test √ √
9 Electrical clearance and creepage distance test √ — 7.5.3
10 Insulation performance test
Insulation resistance test √ √ 7.6.1
Dielectric strength test √ √
7.6.2
Impulse voltage withstand test √ — 7.6.3
11 Grounding test √ √ 7.5.4
12 Standby power test √ — 7.10
13 Control pilot test
Charging control status test √ √ 6.1, 7.8, 7.9
Charging connection control sequence test √ √
Control pilot voltage limit test √ —
Protective grounding continuity test √ √ 7.7.5
Control pilot signal abnormality test √ √ 7.7.6
Switch S2 disconnection and reconnection test √ √
Overcurrent test √ — 7.7.7
14 Noise test √ — 7.12
15 Mechanical strength test √ — 7.11
16 Protection degree test
Prevent solid foreign matter from entering the test √ — 7.3.1
Anti-water entry test √ —
17 Anti-salt spray test √ — 7.3.2
18 Anti-rust (anti-oxidation) test √ — 7.3.3
19 Low temperature test √ — 7.14.1
20 High temperature test √ — 7.14.2
21 Cyclic damp heat test √ — 7.14.3
22 Electromagnetic compatibility test
Immunity test √ — 7.15.2
Emission test √ — 7.15.3
Note: “√” means to be inspected, “√*” means alternative for inspection and “—” means not to be inspected.
4.3 Acceptance judgment
The test items for type test and end-of-manufacturing inspection shall be executed in accordance with Table 1. Only when all the test items of the tested products of corresponding test category meet the requirements can this category be judged as acceptable, otherwise it will be judged as unacceptable.
5 Test method
5.1 Test conditions
5.1.1 Test system
Charging spot test system mainly includes single-phase/three-phase adjustable AC power supply, vehicle socket, vehicle control analog circuit, AC voltage and current measuring instruments, single-phase/three-phase AC load, etc. It may be equipped with superior monitoring system or operation management system, main controller, etc., as shown in Figure 1. The test system is applicable to the tests specified in Sub-clauses 5.3 (except Sub-clause 5.3.6), 5.4, 5.7, 5.8, 5.9.2, 5.9.3, 5.14, 5.15, 5.20, 5.21, 5.22 and 5.23. For test systems and test instruments for other test items, please refer to the requirements of specific clauses. Unless otherwise specified, all output test points are tested at the vehicle interface location.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Inspection rules
5 Test method
