Working Principle - ABB Terra AC Installation Manual

2.4
A
B
C
D
E
F
G
H
1. The user initiates a charge session request (black lines).
2. The EVSE verifies the status of the EV (purple lines).
3. The EVSE goes on and AC power goes to the EV (yellow lines).
4. The charge session starts. AC power flows from the power grid to the EV (red lines).
5. The electrical interfaces of the EVSE communicate with the on-board computer (blue
lines).
(*): Connections between parts of the EVSE and the CPU system. The arrow shows the
direction of the input and output signals.
BCM.V3Y01.0-EN | 001

Working principle

LEDs
Ethernet
WiFi
3G/4G
RFID
Bluetooth
CPU system
Isolation
I AC/DC power supply
J AC input
K Surge protection
L Earth(ground) fault protection
M AC input metering
N AC isolation relay
O Control pilot
P AC output
Description
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