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4.5. Connecting the AC and Backup Load Connection
Before connecting to the main grid, please install a separate AC Breaker (MCB)
between the inverter and the grid. In addition, it is recommended the installation of an
AC Breaker between backup load and inverter. This will ensure the inverter can be
disconnected safely during maintenance and fully protect the system from over-
current. The recommended AC Breaker is 20A for 8kW, 32A for 10kW and 32A for
12kW.
There are three terminal blocks marked as GRID, LOAD, and GEN. Please do not
confuse input and output connections.
GEN/AUX Generator connection.
GRID
This works like a conventional grid-tied inverter. It is both an input
and output connection for non-essential load and supply
LOAD
Connection of essential loads such as lighting, security systems,
and Internet
In order to reduce risk of injury, please user the proper recommended cable as below:
Model Wire Size Cable (mm
2
) Torque (max)
8/10/12kW 5 AWG 16 1.2 N.m
Depending on the battery type, the inverter should be capable of controlling the
batteries BMS. Therefore, you need to set the protocol of the BMS on both the
battery and the inverter.
When using more than one battery, the first battery will be the master, and the other
batteries will be the slaves. Please, check the battery manufacturer specification
for proper operation.
To verify if the battery is actually communicating access the Li BMS menu as
detailed in section 4.13 ‘Setting Up a Lithium Battery’ and check whether the values
are realistic or not. It is important that the charge and discharge limits in that page
match the numbers expected for the number of batteries physically connected.
NOTICE
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