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Selectronic Australia
Rev 41 - Dec 2022
Installation
System Configuration
This section details the extra information needed to install and configure standard system configurations. It is
imperative that the installation details in the previous section have been followed before proceeding with the
relevant installation instructions in this section.
Powerchain
To increase the output power of the system, multiple SP PRO inverters may be linked using Powerchain
technology. Powerchain gives the system integrator the flexibility to configure the SP PRO as either a single-
phase power system with up to four SP PROs or a three-phase configuration with up to twelve SP PROs (four
per phase). A split-phase system with up to eight SP PROs is also possible. All the SP PROs connected in a
Powerchain system operate as one, making the system easy to install, configure, control and monitor via the
one SP PRO (System Manager).
Everything required to link and configure the SP PRO inverters in a Powerchain system comes
standard with each SP PRO series 2i inverter.
Information installing a Powerchain system:
IN0057 – Installation of an SP PRO Powerchain system
Managed Battery Preparation
The SP PRO is compatible with a number of managed battery systems
(batteries that require communications between the battery BMS and the SP PRO).
For a list of compatible managed batteries, check the drop down table in SP LINK
Site Configuration Wizard or check
approved-batteries-for-Selectronic
For the full installation details of a managed battery see
IN0051 – Installation of Managed Batteries
Use the
in SP LINK on page 2, when designing a system with
managed batteries. This will ensure a valid combination of system components.
Always use the
in SP LINK when configuring the SP PRO with
managed batteries.
Managed AC Coupled Preparation
For full installation details see the following documents:
ABB UNO SCERT Managed AC Coupling –
IN0053 – SP PRO ABB UNO Managed AC Coupling
Fronius SCERT Managed AC Coupling –
IN0049 – Installing a Fronius SCERT in a Managed AC Coupled system
on page 2, will
assist in the configuration of a Managed AC Coupled system. Download the
The SP PRO Managed AC Coupling provides a method of linking the Selectronic Certified (SCERT) solar
inverters to the SP PRO via its AC Load output. The SP PRO effectively manages the SCERT inverter under all
operating conditions, whether the system is synchronised to the grid, synchronised to a generator or just
running stand alone.
Each SP PRO can manage a maximum of five SCERT solar inverters by commanding them to output the power
that is needed at that time. This is done via a communications link which also serves to retrieve all the
operational data for display and logging by the SP PRO.
Please note that the SP PRO will not export active power to the grid, as per the requirements of
AS/NZS 4777.2:2200 appendix M.
Minimum Battery Capacity for Managed AC Coupling
When designing a Managed AC Coupled system, it should be noted that there are limits on the installed
capacity of the AC-Coupled inverters based on battery type and size, as well as the SP PRO capacity.
in SP LINK gives the maximum allowable output power of all the Selectronic
Certified solar inverters and the minimum battery size for a Managed AC Coupled system.
When designing a system, use the
in SP LINK to determine the ideal
match between battery type and size and the output of the Selectronic Certified solar inverters.
will also calculate and configure the ‘Islanding Power Limit’ parameter
within the SP PRO, limiting the maximum output power, if required, of the SCERT solar inverters
during stand-alone operation.
System Configuration