UL has several standards that cover EV charging systems from the wall all the way to the charger in the vehicle. Installing UL-approved equipment is a definite PGR best-practice to aid in the fastest implementation of charging hardware.
UL 2202: Standard for Electric Vehicle (EV) Charging System Equipment
This standard covers both on-board and off-board chargers, where a charger is a device that supplies charging current to a battery. The products may be used indoors or outdoors unless considered on-board, in which case they are considered outdoor use. These products include all charging levels, including Level 3.
UL 2231-1: Standard for Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits; Part 1: General Requirements
UL 2231-2: Standard for Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits; Part 2: Particular Requirements for Protection Devices for Use In Charging Systems
These standards are used to cover the particular Personnel Protection System that is required by the National Electrical Code under Article 625 (paragraph 625.22).
UL 2251: Standard for Plugs, Receptacles, and Couplers for Electric Vehicles
This standard is used to cover the actual EV connector and EV inlet provided to connect a vehicle to the power source. If the parts on the vehicle side of the cable, they are considered to be connectors and inlets (the combination of which is a coupler), or if on the power source side of the cable, a receptacle and plug. These particular components are not intended for direct connection to a normal receptacle in the wall, and NEMA type receptacles are not included in the scope of this standard.
UL Subject 2580: Outline of Investigation for Batteries for Use In Electric Vehicles
This outline covers batteries for use in electric vehicles. Specifically, Nickel, Lithium Ion, Lithium Ion Polymer cells, cell modules, and battery packs, for use in EVs.
UL Subject 2594: Outline of Investigation for Electric Vehicle Supply Equipment
This outline covers supply equipment, which is defined as a device that delivers power to an on-board charger. These products include portable or stationary cord sets, charging stations, and power outlets. The differences in these products are as follows: EV cord sets consist of a power cord for connection to the typical NEMA receptacle in the owner’s garage, an electrical enclosure in the middle to house personnel protection components and other control type components, up to 25 feet of EV cable and the EV connector. This product may be transported from place to place (portable) or hung in a dedicated space for use in one location (stationary). Charging stations are products that are provided with a cable or a means to connect a cable, and the personnel protection equipment components required by the National Electrical Code are housed in the device. Power outlets are similar to charging stations, but they are not provided with personnel protection equipment, as they rely on the portable cord set to be brought to the charging location and the personnel protection is provided by the cord set.
UL 62: Standard for Flexible Cords and Cables
This standard is used to cover the cable types EV, EVJ, EVE, EVJE, EVT, and EVJT, which are the six cable types defined in the National Electrical Code as a suitable cable type for use with electric vehicles. See 625.17 of the National Electrical Code.
UL Subject 2733: Outline of Investigation for Surface Vehicle On Board Cable
This outline covers the cable and wiring harnesses used on board an EV for interconnection of the different components within the charging path.
UL Subject 2734: Outline of Investigation for Connectors for Use With On Board Electric Vehicle (EV) Charging Systems
This outline covers the actual connectors at the end of the cables covered under UL Subject 2733 above and these connectors are used to provide an electrical connection between the components in the charging path.
UL 1004-1: Standard for Rotating Electrical Machines: General Requirements
UL 1004-2: Standard for Impedance Protected Motors
UL 1004-3: Standard for Thermally Protected Motors
UL 1004-4: Standard for Electric Generators
UL 1004-5: Standard for Fire Pump Motors
UL 1004-6: Standard for Servo and Stepper Motors
UL 1004-7: Standard for Electronically Protected Motors
UL 1004-8: Standard for Inverter Duty Motors
This series of standards covers the motor construction, tests and protection means by combining the general requirements with the appropriate part of the series. Not all of these are relevant for EV’s, for example Fire Pump Motors does not apply, but i included all the titles for the sake of clarity so you would not wonder where the missing part numbers were. If you have a thermally protected motor, you would combine part 1 and part 3 together to cover the motor. These motors would be considered suitable for use on board a vehicle.
UL Subject 2735: Outline of Investigation for Utility Metering Equipment
This outline will cover the utility meter for smart grid applications.
This covers the standards currently in place. Please note, UL Subject 2733, UL Subject 2734 and UL Subject 2735 are not yet published, but will be soon as they are already in the process.
