Wallbox Power Sharing Installation Manual

WBPS-IM-001-EN

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Wallbox Power Sharing

Installation manual

WBPS-IM-001-EN

2/9

Contents

1. Product description ................................................................................................................................................................................................................................................................. 3

2. Startup ....................................................................................................................................................................................................................................................................................................... 4

3. Connection scheme ................................................................................................................................................................................................................................................................ 4

4. Main Connections ...................................................................................................................................................................................................................................................................... 5

5. Installing .................................................................................................................................................................................................................................................................................................. 6

6. Protection recommendations .................................................................................................................................................................................................................................... 8

WBPS-IM-001-EN

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1. Product description

Power Sharing is the newest concept that allows multiple vehicles to be charging at the same time using current
from the same grid. The main advantage of this functionality is that all connected vehicles can be charged with
the total maximum power available.

All the available chargers are connected on a Master / Slave concept, using CAN bus protocol.
This set-up is composed of a Master charger (Commander) and multiple slaves (Pulsars)

There are two different possible set of configurations based on below power mains:

Mains 63 A (Power 44kW - Voltage 400V 63A per phase)
System with 6 chargers – 1 Master + 5 Slaves (system only start acting with minimum 3 chargers)

Mains 150 A (Power 104kW - Voltage 400V 150A per phase)
System with 15 chargers – 1 Master + 14 Slaves (system only start acting with minimum 6 chargers)

When system start up, there exist a pairing between Master and Slave. The different state on the chargers
that concerns to the Power Sharing process are state “Ready” and state “Charging”.

The slaves are assigned with a power output control to 10Amp (to ensure all vehicles will start charging
process) when system initialization. When a vehicle is connected and change from “Ready” to “Charging”, the
master will distribute the same amount of current among the chargers that are in the "Charging" state.

In the case that the communication between the master and the slave is lost, the slave charger will still be able
to charge at a current of 6 A. This allows the charger to work independently in case of a lost connection.

In case that a setup installation has more chargers than its setting, the master will send current only to the
first allowed chargers. The rest of the chargers will stay in "wait for current" status and will not be able to
charge.