CSA Group CSA C22.2 No. 348:23 National Standard of Canada Electric vehicle power export equipment (EVPE)

PREFACE

This is the harmonized CSA Group and ULSE Standard for Electric Vehicle Power Export Equipment(EVPE). It is the first edition of CSA C22.2 No. 348 and the first edition of UL 9741.

This harmonized standard was jointly prepared by a working group formed of experts representing CSAGroup and ULSE and reviewed and approved by the CSA Technical Committee on Industrial Products andthe ULSE Technical Committee for Electric Vehicle Power Export Equipment (EVPE).

This standard is considered suitable for use for conformity assessment within the stated scope of thestandard.

This standard was reviewed by the CSA Subcommittee on Electric Vehicle Power Export Equipment,under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA StrategicSteering Committee on Requirements for Electrical Safety, and has been formally approved by the CSATechnical Committee. This standard has been developed in compliance with the Standards Council ofCanada requirements for National Standards of Canada. It has been published as a National Standard ofCanada by CSA Group.

1 Scope

1.1 The requirements of this standard apply to off-board unidirectional and bidirectional equipment rated1000 Vac and 1500 Vdc or less, that transfers electrical energy between an electric vehicle and off boardloads as well as operating in parallel with an electric power system, such as the electric utility grid, using apermanently attached vehicle connector. Equipment that has optional bidirectional functionality serves asboth Electric Vehicle Power Export Equipment (EVPE) and electric vehicle supply equipment (EVSE). Theproducts to which these requirements apply are intended to be installed in accordance with the NationalElectrical Code, NFPA 70, and CSA C22.1, Canadian Electrical Code, Part I.

1.2 The requirements of this standard are intended to apply to equipment for indoor or outdoor use.

1.3 The requirements for equipment without power export functionality are contained in the Standard forElectric Vehicle Supply Equipment, NMX-J-677 ANCE/CSA C22.2 No. 280/UL 2594 or the Standard forDC Charging Equipment for Electric Vehicles, NMX-J-817 ANCE/CSA C22.2 No. 346/UL 2202.

1.4 Some configurations of equipment to which the requirements of this Standard apply havefunctionality as described below:

a) The equipment can be supplied by DC power from the vehicle and acts as a standalone piece ofequipment provided with a converter and provides AC and/or DC power to AC and/or DCreceptacles for the connection to external loads;

b) The equipment can be supplied by AC power from the vehicle and acts as a standalone piece ofequipment, provided with optional voltage conditioning equipment, and provides AC power to ACreceptacles for the connection to external loads;

c) The equipment can be supplied by DC power from the vehicle and is provided with a converterthat is permanently connected to the premise and provides AC or DC power to loads that are notinterconnected (electrically connected) to the grid connected part of the premise wiring system;

d) The equipment can be supplied by AC power from the vehicle and is provided with an optionalconverter and is permanently connected to the premise and provides AC or DC power to loads thatare not interconnected (electrically connected) to the grid connected part of the premise wiringsystem;

e) The equipment can be supplied by DC power from the vehicle and is provided with an inverterthat is permanently connected to the premise, and provides AC power to premise wiring systemsthrough a transfer switch;

f) The equipment can be supplied by AC power from the vehicle and is provided with optionalvoltage conditioning equipment and is permanently connected to the premise, and provides ACpower to premise wiring systems through a transfer switch;

g) The equipment can be supplied by DC power from the vehicle and is provided with an inverterfor converting to AC power and is permanently connected to the premise wiring system withcapability to operate in parallel with the area electric power system (AREA EPS) but is preventedfrom export to the utility grid by PCS control;

h) The equipment can be supplied by AC power from the vehicle and is provided with optionalvoltage conditioning equipment and is permanently connected to the premise wiring system withcapability to operate in parallel with the AREA EPS but is prevented from export to the utility grid byPCS control;

i) The equipment can be supplied by DC power from the vehicle and the equipment is provided witha grid-tie inverter for converting to AC power and is permanently connected to the premise wiringsystem, with capability to operate in parallel with the AREA EPS but not islanding (no back-upduring grid outage);

j) The equipment can be supplied by AC power from the vehicle and is provided with optionalvoltage conditioning equipment and is permanently connected to the premise wiring system, withcapability to operate in parallel with the AREA EPS but not islanding (no back-up during gridoutage);

k) The equipment can be supplied by DC power from the vehicle and the equipment is providedwith a grid-tie inverter for converting to AC power and is permanently connected to the premisewiring system, with capability to operate in parallel with the AREA EPS with islanding (back-upduring grid outage);

l) The equipment can be supplied by AC power from the vehicle and is provided with optionalvoltage conditioning equipment and is permanently connected to the premise wiring system, withcapability to operate in parallel with the AREA EPS with islanding (back-up during grid outage);

m) The equipment can be supplied by DC power from the vehicle to other inverter/converter/power

conditioning equipment that is grid interactive with capability to operate in parallel with the AREAEPS for supplying AC power to the grid, and for other special purpose requirements; and

n) The equipment can be supplied by AC power from the vehicle and is permanently connected tothe premise wiring system and uses EV on-board interactive inverters that meet SAE J3072performance requirements including communications protocols appropriate for the EV-EVPEequipment interface and that operates in parallel with the AREA EPS.

All the above equipment configurations, (a) through (n), may also provide power to the electric vehicle forthe purpose of charging the on-board battery. All equipment is provided with a function that will cause adisconnect between the vehicle and the load if power from the vehicle exceeds specific limits. Someproducts may be able to operate in multiple modes.

1.5 The power export functionality includes enable and disable functions to limit or prevent export to theutility grid for locations that are not capable of or permitted to receive back feed power. This functionality isaddressed using requirements of the Standard for Inverters, Converters, Controllers, and InterconnectionSystem Equipment for Use with Distributed Energy Resources, UL 1741.

1.6 The equipment performs power conversion and Interconnection Systems Equipment (ISE)functionality. These functions may be located within one piece of equipment or within multiple pieces ofequipment.

1.7 Equipment that is not a complete assembly and depends upon installation in an end product forcompliance with the requirements in this standard is evaluated under the requirements of this Standardand the standard for the end product.

1.8 These requirements do not apply to battery chargers. The requirements for these products can befound in the Standard for Battery Chargers for Charging Engine-Starter Batteries, UL 1236, the Standardfor Industrial Battery Chargers, UL 1564, or CSA C22.2 No. 107.2, Battery Chargers.