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### UL Certification for Charging Stations

#### 1. Overall Station Inspection
- Power Supply System Check
- Charging System Check
- Monitoring System Check
- Civil Construction and Fire Protection Measures Check
- Document Review

#### 2. Non-Vehicle Mounted Charging Equipment
- General Inspection Items
- Charging Control Function Test
- Standby Power Consumption Test
- Vehicle Plug Locking Function Test
- Display Function Test
- Output Voltage Exceeding Vehicle Allowable Value Test
- Output Voltage Control Error Test
- Insulation Fault Test
- Input Function Test
- Emergency Stop Function Test
- Door Opening Protection Test
- Full Compliance with Communication Protocol
- Full Interoperability Test
- Metering Calibration Test

#### 3. AC Charging Stations
- General Inspection Items
- Charging Readiness Test
- Startup and Charging Phase Test
- CP Disconnection Test
- CP Grounding Test
- Protection Ground Conductor Continuity Loss Test
- Output Overcurrent Test
- Disconnect Switch S2 Test
- CP Loop Voltage Limit Test
- Full Interoperability Test
- Metering Calibration Test

#### Standards Referenced:
- **NB/T 33004-2013** Electric Vehicle Charging and Swapping Facility Construction and Acceptance Specification
- **GB 50966-2014** Design Specification for Electric Vehicle Charging Stations
- **GB 50149-2010** Installation Engineering Busbar Device Construction and Acceptance Specification for Electrical Equipment
- **GB/T 27930-2015** Communication Protocol between Non-Vehicle Mounted Conductive Chargers and Battery Management Systems for Electric Vehicles
- **GB/T 28569-2012** Electric Energy Metering for AC Charging Stations for Electric Vehicles
- **GB/T 29316-2012** Technical Requirements for Electric Energy Quality of Electric Vehicle Charging and Swapping Facilities
- **GB/T 29318-2012** Electric Energy Metering for Non-Vehicle Mounted Chargers for Electric Vehicles
- **GB/T 34657.1-2017** Interoperability Test Specification for Conductive Charging of Electric Vehicles Part 1: Power Supply Equipment
- **GB/T 34657.2-2017** Interoperability Test Specification for Conductive Charging of Electric Vehicles Part 2: Vehicles
- **GBT 34658-2017** Consistency Test of Communication Protocol between Non-Vehicle Mounted Conductive Chargers and Battery Management Systems for Electric Vehicles
- **JJG 1148-2018** Metrological Verification Procedures for AC Electric Vehicle Charging Stations
- **JJG 1149-2018** Metrological Verification Procedures for Non-Vehicle Mounted Electric Vehicle Chargers

These standards outline the specific requirements and tests necessary for UL certification of electric vehicle charging stations, ensuring compliance with safety, functionality, and interoperability standards in China.