Must disconnect within seconds during
voltage/frequency anomalies.
Bidirectional
Charger
Safety
UL 9741, UL
1741 SA44,45
UL 9741 covers safety requirements for bidirectional EV
charging system equipment, including functionality to
export power from the electric power system. New York: IEEE, 2018. IEEE Standard for Interconnection and Interoperability Distributed Energy
Resources with Associated Electric Power Systems Interfaces. For Hz
systems, frequency-related functions need adaptation to
local grid codes.u. detailed overview of
these standards and their relevance V2H
systems provided Table 10.PAGE VEHICLE-TO-HOME (V2H) SYSTEMS
HANDBOOK
6. 9741.
Cybersecurity and EMI compliance are
addressed ISO/SAE 21434, IEC 62443,
and CISPR 11.
Table 10: Interconnection Codes and Compliance
42 45
42
Institute Electrical and Electronics Engineers.16 seconds. Standard for Electric Vehicle Power Export Equipment (EVPE).
43
International Electrotechnical Commission.
Key standards like IEEE 1547-2018 and UL
1741 ensure safe grid interconnection
and export control, while IEC 61851 and ISO
15118-20 govern charging and bidirectional
communication.
45
Underwriters Laboratories. Electric Vehicle Conductive Charging System Part General Requirements. Standard for Inverters, Converters, Controllers and Interconnection System Equipment for Use
with Distributed Energy Resources.
Interconnection Codes and Compliance
Standard Code Key Requirements Relevance V2H
Grid
Interconnection
IEEE 1547-
201842
Applies when the exports power the grid (V2H2G
mode). For
bidirectional charging (V2H), IEC 61851-23 and IEC
61851-24 provide detailed requirements for charging
systems and communication protocols. Geneva: IEC, 2017. 1741 SA. Northbrook, IL: UL,
2023.
44
Underwriters Laboratories.
. for 0. IEEE Std 1547-2018.
EV Charging
Interface
IEC 61851-143
Defines and EVSE communication using PWM
signals (duty cycle 3%–97%) control charging current. Supports ride-through for
voltage dips down 0.
Specifies Modes 1–4 for and charging. Northbrook, IL: UL, 2021. Accurate metering, grid
communication, and energy resale legality
also play vital roles.
IEC 61851-1. UL
1741 addresses inverters and other utility-
interconnected distributed generation equipment for grid
support functions, enabling smarter, safer reactive grid
interconnection. Interconnection Codes and
Compliance
Integrating V2H systems with the power grid
requires compliance with technical, safety,
communication, and regulatory standards.5 p
