This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 43.040.99
CCS T 35
National Standard of the People’s Republic of China
GB/T 34657.1-2025
Replaces GB/T 34657.1-2017
Interoperabilitytestspecificationsofelectricvehicleconductivecharging—
Part1: Supply equipment
电动汽车传导充电互操作性测试规范
第 1 部分:供电设备
(English Translation)
Issue date: 2025-08-29 Implementation date: 2026-03-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
1 Scope
This document specifies the inspection rules, test conditions, and test cases for the charging interoperability test of conductive power supply equipment in electric vehicle energy transfer systems.
This document is applicable to AC power supply equipment for electric vehicles conforming to GB/T 18487.1-2023, and DC power supply equipment for electric vehicles conforming to GB/T 18487.1-2023 or GB/T 18487.5-2024.
Note 1: In this document, Class A system refers to a charging system using the GB/T 20234.3 vehicle interface and with a control pilot circuit conforming to Appendix B of GB/T 18487.1-2023; Class B system refers to a charging system using the GB/T 20234.4 vehicle interface and with a control pilot circuit conforming to Appendix C of GB/T 18487.1-2023; Class C system refers to a charging system using the GB/T 20234.3 vehicle interface and with a control pilot circuit conforming to Appendix A and Appendix B.3 of GB/T 18487.5-2024.
Note 2: The electric vehicle DC power supply equipment with charging and discharging functions specified in this document is limited to Class B and Class C systems.
2 Normative References
The contents of the following documents constitute essential provisions of this document through normative reference. For dated references, only the edition corresponding to that date applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 14549 Quality of electric energy supply—Harmonics in public supply network
GB/T 18487.1-2023 Electric vehicle conductive charging system—Part 1:General requirements
GB/T 18487.5-2024 Electric vehicle conductive charging system - Part 5: DC charging system for GB/T 20234.3
GB/T 20234.1-2023 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 interface
GB/T 20234.3-2023 Connection set for conductive charging of electric vehicles - Part 3: DC charging interface
GB/T 20234.4-2023 Connection set for conductive charging of electric vehicles - Part 4: High-power DC charging interface
GB/T 27930-2023 Digital communication protocols between off-board conductive charger and electric vehicle
GB/T 27930.2-2024 Digital communication protocol between off-board conductive charger and electric vehicle - Part 2: Communication protocol for GB/T 20234.3
GB/T 29317 Terminology of electric vehicle charging and battery swap infrastructure
GB/T 34658 Conformance test for communication protocol between off-board conductive charger and battery management system for electric vehicles
GB/T 41589-2022 In-cable control and protection device for mode 2 charging of electric vehicles (IC-CPD)
GB 44263-2024 Satety requirements for electric vehicle conductive charging system
NB/T 33001 Specification for electric vehicle off-board conductive charger
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 18487.1-2023, GB/T 29317, and the following apply.
3.1
charging interoperability
Capability of power supply equipment and electric vehicles, of the same or different models/versions, to achieve charging interconnectivity through information exchange and process control.
3.2
charging interoperability test
Inspection and testing conducted to examine the charging interoperability.
4 Inspection Rules
4.1 Test Item Coding Rules
The coding rules for charging interoperability test items are shown in Figure 1.
4.2 Judgment Criteria
According to the provisions of Appendix A, if the equipment under test meets the requirements for all corresponding test items, it is judged as qualified; otherwise, it is judged as unqualified.
4.3 Test Sequence
The sequence for the charging interoperability test is shown in Figure 2.
a) The submitting organization shall provide proof materials demonstrating that the charging connection assembly configured for the equipment under test complies with the provisions of 5.5.1, and the testing organization shall conduct tests according to the provisions of 6.2.
b) DC power supply equipment under test shall first undergo the communication protocol conformance test for the corresponding system according to GB/T 34658, and then undergo the DC charging interoperability test according to the provisions of 6.3.
c) When the AC power supply equipment under test is an AC charging station or an in-cable control and protection device (IC-CPD), it shall undergo the AC charging interoperability test according to the provisions of 6.4.
4.4 Voltage and Current Error Requirements
For voltage and current values where the error is not explicitly specified, the permissible error shall be ±5%.
5 Test Conditions
5.1 Environmental Conditions
During the test period for each item, the environmental test conditions shall be relatively stable and carried out under standard atmospheric conditions for measurement and testing, namely:
a) Ambient temperature: +15 °C to +35 °C;
b) Relative humidity: 45% to 75%;
c) Atmospheric pressure: 86 kPa to 106 kPa.
5.2 Power Supply Conditions
5.2.1 AC Power Supply
During testing, the AC power supply conditions shall be:
a) Frequency: 50 Hz ± 0.5 Hz;
b) AC supply voltage: 220 V / 380 V, with a permissible deviation of ±5%.
Note: The AC power supply is only used for testing in charging mode.
5.2.2 Grid Simulator
The grid simulator shall meet the following requirements:
6 Test Cases
6.1 Charging Mode and Connection Method Check
Test Number: TC_AC.EVSE_P_Unmated.X_001, TC_DX.EVSE_P_Unmated.X_001
Test Purpose: To check whether the adopted charging mode and connection method comply with the requirements.
Test Method and Steps: Perform a visual inspection.
Pass Criteria:
· The charging mode adopted by the power supply equipment shall comply with the corresponding electric vehicle charging mode usage conditions specified in 5.1 of GB/T 18487.1-2023;
· DC power supply equipment shall use connection mode C (including the cable assembly under connection mode C);
· AC charging stations shall use connection mode A, or connection mode B, or connection mode C (including the cable assembly under connection mode C);
· The in-cable control and protection device (IC-CPD) shall comply with the structural classification requirements specified in 4.2 of GB/T 41589-2022.
6.2 Charging Interface Interoperability Test
6.2.1 Interface Structure Compatibility Test
Test Number: TC_DX.EVSE_C_Unmated.VehicleConnector_001, TC_DX.EVSE_C_Unmated.VehicleInlet_001, TC_AC.EVSE_C_Unmated.EVSocket-outlet_001, TC_AC.EVSE_C_Unmated.EVPlug_001, TC_AC.EVSE_C_Unmated.VehicleConnector_001, TC_AC.EVSE_C_Unmated.VehicleInlet_001
Test Purpose: To check whether the structural design of the charging interface meets the interchangeability requirements.
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Inspection Rules
5 Test Conditions
6 Test Cases
Appendix A (Normative) Charging Interoperability Test Items
Appendix B (Normative) Charging Interface Gauges
Appendix C (Informative) Declaration of Charging Interoperability Test for DC Supply Equipment
Standard
GB/T 34657.1-2025 Interoperability test specifications of electric vehicle conductive charging—Part 1: Supply equipment (English Version)
Standard No.
GB/T 34657.1-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
63500 words
Price(USD)
1905.0
Implemented on
2026-3-1
Delivery
via email in 1~5 business day
Detail of GB/T 34657.1-2025
Standard No.
GB/T 34657.1-2025
English Name
Interoperability test specifications of electric vehicle conductive charging—Part 1: Supply equipment
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 43.040.99
CCS T 35
National Standard of the People’s Republic of China
GB/T 34657.1-2025
Replaces GB/T 34657.1-2017
Interoperabilitytestspecificationsofelectricvehicleconductivecharging—
Part1: Supply equipment
电动汽车传导充电互操作性测试规范
第 1 部分:供电设备
(English Translation)
Issue date: 2025-08-29 Implementation date: 2026-03-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
1 Scope
This document specifies the inspection rules, test conditions, and test cases for the charging interoperability test of conductive power supply equipment in electric vehicle energy transfer systems.
This document is applicable to AC power supply equipment for electric vehicles conforming to GB/T 18487.1-2023, and DC power supply equipment for electric vehicles conforming to GB/T 18487.1-2023 or GB/T 18487.5-2024.
Note 1: In this document, Class A system refers to a charging system using the GB/T 20234.3 vehicle interface and with a control pilot circuit conforming to Appendix B of GB/T 18487.1-2023; Class B system refers to a charging system using the GB/T 20234.4 vehicle interface and with a control pilot circuit conforming to Appendix C of GB/T 18487.1-2023; Class C system refers to a charging system using the GB/T 20234.3 vehicle interface and with a control pilot circuit conforming to Appendix A and Appendix B.3 of GB/T 18487.5-2024.
Note 2: The electric vehicle DC power supply equipment with charging and discharging functions specified in this document is limited to Class B and Class C systems.
2 Normative References
The contents of the following documents constitute essential provisions of this document through normative reference. For dated references, only the edition corresponding to that date applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 14549 Quality of electric energy supply—Harmonics in public supply network
GB/T 18487.1-2023 Electric vehicle conductive charging system—Part 1:General requirements
GB/T 18487.5-2024 Electric vehicle conductive charging system - Part 5: DC charging system for GB/T 20234.3
GB/T 20234.1-2023 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 interface
GB/T 20234.3-2023 Connection set for conductive charging of electric vehicles - Part 3: DC charging interface
GB/T 20234.4-2023 Connection set for conductive charging of electric vehicles - Part 4: High-power DC charging interface
GB/T 27930-2023 Digital communication protocols between off-board conductive charger and electric vehicle
GB/T 27930.2-2024 Digital communication protocol between off-board conductive charger and electric vehicle - Part 2: Communication protocol for GB/T 20234.3
GB/T 29317 Terminology of electric vehicle charging and battery swap infrastructure
GB/T 34658 Conformance test for communication protocol between off-board conductive charger and battery management system for electric vehicles
GB/T 41589-2022 In-cable control and protection device for mode 2 charging of electric vehicles (IC-CPD)
GB 44263-2024 Satety requirements for electric vehicle conductive charging system
NB/T 33001 Specification for electric vehicle off-board conductive charger
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 18487.1-2023, GB/T 29317, and the following apply.
3.1
charging interoperability
Capability of power supply equipment and electric vehicles, of the same or different models/versions, to achieve charging interconnectivity through information exchange and process control.
3.2
charging interoperability test
Inspection and testing conducted to examine the charging interoperability.
4 Inspection Rules
4.1 Test Item Coding Rules
The coding rules for charging interoperability test items are shown in Figure 1.
4.2 Judgment Criteria
According to the provisions of Appendix A, if the equipment under test meets the requirements for all corresponding test items, it is judged as qualified; otherwise, it is judged as unqualified.
4.3 Test Sequence
The sequence for the charging interoperability test is shown in Figure 2.
a) The submitting organization shall provide proof materials demonstrating that the charging connection assembly configured for the equipment under test complies with the provisions of 5.5.1, and the testing organization shall conduct tests according to the provisions of 6.2.
b) DC power supply equipment under test shall first undergo the communication protocol conformance test for the corresponding system according to GB/T 34658, and then undergo the DC charging interoperability test according to the provisions of 6.3.
c) When the AC power supply equipment under test is an AC charging station or an in-cable control and protection device (IC-CPD), it shall undergo the AC charging interoperability test according to the provisions of 6.4.
4.4 Voltage and Current Error Requirements
For voltage and current values where the error is not explicitly specified, the permissible error shall be ±5%.
5 Test Conditions
5.1 Environmental Conditions
During the test period for each item, the environmental test conditions shall be relatively stable and carried out under standard atmospheric conditions for measurement and testing, namely:
a) Ambient temperature: +15 °C to +35 °C;
b) Relative humidity: 45% to 75%;
c) Atmospheric pressure: 86 kPa to 106 kPa.
5.2 Power Supply Conditions
5.2.1 AC Power Supply
During testing, the AC power supply conditions shall be:
a) Frequency: 50 Hz ± 0.5 Hz;
b) AC supply voltage: 220 V / 380 V, with a permissible deviation of ±5%.
Note: The AC power supply is only used for testing in charging mode.
5.2.2 Grid Simulator
The grid simulator shall meet the following requirements:
6 Test Cases
6.1 Charging Mode and Connection Method Check
Test Number: TC_AC.EVSE_P_Unmated.X_001, TC_DX.EVSE_P_Unmated.X_001
Test Purpose: To check whether the adopted charging mode and connection method comply with the requirements.
Test Method and Steps: Perform a visual inspection.
Pass Criteria:
· The charging mode adopted by the power supply equipment shall comply with the corresponding electric vehicle charging mode usage conditions specified in 5.1 of GB/T 18487.1-2023;
· DC power supply equipment shall use connection mode C (including the cable assembly under connection mode C);
· AC charging stations shall use connection mode A, or connection mode B, or connection mode C (including the cable assembly under connection mode C);
· The in-cable control and protection device (IC-CPD) shall comply with the structural classification requirements specified in 4.2 of GB/T 41589-2022.
6.2 Charging Interface Interoperability Test
6.2.1 Interface Structure Compatibility Test
Test Number: TC_DX.EVSE_C_Unmated.VehicleConnector_001, TC_DX.EVSE_C_Unmated.VehicleInlet_001, TC_AC.EVSE_C_Unmated.EVSocket-outlet_001, TC_AC.EVSE_C_Unmated.EVPlug_001, TC_AC.EVSE_C_Unmated.VehicleConnector_001, TC_AC.EVSE_C_Unmated.VehicleInlet_001
Test Purpose: To check whether the structural design of the charging interface meets the interchangeability requirements.
Contents of GB/T 34657.1-2025
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Inspection Rules
5 Test Conditions
6 Test Cases
Appendix A (Normative) Charging Interoperability Test Items
Appendix B (Normative) Charging Interface Gauges
Appendix C (Informative) Declaration of Charging Interoperability Test for DC Supply Equipment
