SAE Update - January 2024 - 18

TECH FOCUS: GROUND VEHICLES
AND ELECTRIFICATION
SAE J3400 and the game-changing
advances in AC charging
Universal AC power transfer.
around the electric vehicle.
Under this paradigm, cost
optimizations made on the
vehicle could lead to a many-fold
increase in the installation and
ongoing operational costs of offboard
infrastructure, including
increased energy usage. This
would result in higher total
system costs, slowing the
adoption of electric vehicles.
Vehicle OEM energy units would
then be burdened by higher
capital costs and a smaller
customer base.
The key to electrifying
transportation lies in architecting
electric vehicles and supply
equipment together as a single
system. SAE J3400, with the
support of a supermajority of
OEMs, has made sound
engineering decisions that will
pay dividends for decades by
lowering barriers to
electrification in North America.
While SAE J1772 provided good
18
January 2024
AC charging solutions for single- and two-family
homes, SAE J3400 better addresses the broader
market in several ways.
It supports AC voltages commonly available in
commercial areas, streets, parking garages, and dense
housing locations, specifically 480/277-V three-phase
power, one of the most common configurations
provided by utilities in the United States. Retaining
the support for 277-V charging, already present in
existing NACS (Tesla) electric vehicles, demonstrates
that OEMs are aligning their decisions with mass
electrification by widening the cost-optimization
bounty to include supply infrastructure.
Many utilities require 480/277 VAC above a certain
service size; with EV support for 277 VAC, the site
avoids paying secondary (customer-owned)
transformers to create a lower voltage. Additionally,
most DC fast chargers utilize 480/277-VAC threephase
power; with EV support for 277 VAC, a parking
lot with AC and DC chargers can share the same panel
board and power feed for each type of station.
These sites mentioned above avoid an additional
panel board, eliminate space for transformers, reduce
wire sizes, reduce conduit sizes, eliminate additional
overcurrent protection devices, and may reduce site
engineering design work. Some sites with limited
space, like street charging locations, can significantly
UPDATE
SAE International

SAE Update - January 2024

Table of Contents for the Digital Edition of SAE Update - January 2024

SAE Update - January 2024 - INTRO
SAE Update - January 2024 - SPNSR
SAE Update - January 2024 - Cov1
SAE Update - January 2024 - Cov2
SAE Update - January 2024 - 1
SAE Update - January 2024 - 2
SAE Update - January 2024 - 3
SAE Update - January 2024 - 4
SAE Update - January 2024 - 5
SAE Update - January 2024 - 6
SAE Update - January 2024 - 7
SAE Update - January 2024 - 8
SAE Update - January 2024 - 9
SAE Update - January 2024 - 10
SAE Update - January 2024 - 11
SAE Update - January 2024 - 12
SAE Update - January 2024 - 13
SAE Update - January 2024 - 14
SAE Update - January 2024 - 15
SAE Update - January 2024 - 16
SAE Update - January 2024 - 17
SAE Update - January 2024 - 18
SAE Update - January 2024 - 19
SAE Update - January 2024 - 20
SAE Update - January 2024 - 21
SAE Update - January 2024 - 22
SAE Update - January 2024 - 23
SAE Update - January 2024 - 24
SAE Update - January 2024 - 25
SAE Update - January 2024 - 26
SAE Update - January 2024 - 27
SAE Update - January 2024 - 28
SAE Update - January 2024 - 29
SAE Update - January 2024 - 30
SAE Update - January 2024 - 31
SAE Update - January 2024 - 32
SAE Update - January 2024 - 33
SAE Update - January 2024 - 34
SAE Update - January 2024 - 35
SAE Update - January 2024 - 36
SAE Update - January 2024 - 37
SAE Update - January 2024 - 38
SAE Update - January 2024 - 39
SAE Update - January 2024 - 40
SAE Update - January 2024 - 41
SAE Update - January 2024 - 42
SAE Update - January 2024 - 43
SAE Update - January 2024 - 44
SAE Update - January 2024 - 45
SAE Update - January 2024 - 46
SAE Update - January 2024 - 47
SAE Update - January 2024 - 48
SAE Update - January 2024 - 49
SAE Update - January 2024 - 50
SAE Update - January 2024 - 51
SAE Update - January 2024 - 52
SAE Update - January 2024 - 53
SAE Update - January 2024 - 54
SAE Update - January 2024 - 55
SAE Update - January 2024 - 56
SAE Update - January 2024 - 57
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