EVITP EV Charging Standards 4

Question 1

Which standard defines the North American Charging Standard (NACS) connector as an SAE standard?

Accepted Answer

SAE J3400

Answer

SAE standardized the Tesla-developed NACS connector as J3400.

Question 2

What does SAE J2954 address?

Accepted Answer

Wireless (inductive) power transfer for light-duty EVs

Answer

J2954 covers wireless inductive charging, including alignment and power classes.

Question 3

ISO 15118-20 added which capability beyond ISO 15118-2?

Accepted Answer

Bidirectional power transfer (V2G) and wireless support

Answer

ISO 15118-20 supports bidirectional power transfer, wireless charging, and stronger security.

Question 4

'Plug & Charge' allows a driver to start a session without an app or card. Which standard enables it?

Accepted Answer

ISO 15118 with digital certificates

Answer

ISO 15118 uses PKI certificates stored in the vehicle to authenticate and bill automatically.

Question 5

Which standard was developed for very high-power charging of heavy-duty trucks and buses above 1 MW?

Accepted Answer

Megawatt Charging System (MCS)

Answer

MCS (SAE J3271) targets multi-megawatt charging for medium- and heavy-duty vehicles.

(EVITP) Electric Vehicle Infrastructure Program Practice Test