Conext SW4048 4,000W 48V Installation

Grid-interactive and Other Features
975-0638-01-03 1–13
Consult the manufacturer's specifications to determine if your PV inverter is
compatible with Active Frequency Shift Power Curtailment. Conext SW’s AC
coupling function is enabled by default (see “Advanced Features Menu” on
page 4–36).
The AC coupling advanced setting should remain enabled except in cases when
the DC voltage level is allowed to have large variations and the line frequency
needs to remain constant.
Further details about AC Coupling can be found in the document “AC Coupling
Solutions Guide (Document Number: 976-0240-01-01)” available at
solar.schneider-electric.com.
AC Couple Smart Charge
AC Couple Smart Charge is a feature of the Conext SW that prioritizes battery
charging over energy export to local AC loads connected upstream of the
Conext CSW battery inverter. AC Coupling must be enabled for this feature to be
functional.
In AC-coupled configuration and with grid present, the Conext SW monitors flow
of power from its load port (AC Output) to the utility grid input (AC Input). When
power flow to the grid is detected and the battery needs charging after a short
delay, the Conext SW initiates a bulk charging cycle by switching to charge
mode and drawing AC power to charge the battery. It only draws enough energy
to keep the flow of power to the grid to zero. As long as the battery is able to
accept the energy, the Conext SW will continue diverting excess PV production
to the battery. Once the battery bank is at a level such that not all excess energy
from the PV Inverter is being absorbed, the balance will then flow out to upstream
loads in the house that are not connected to the Conext SW’s AC output port.
If PV production is lost for a prolonged period of time and the battery bank
discharges below the Recharge Volts setting, the Conext SW will initiate a normal
charge cycle and use power from the grid to charge the battery. For information
on this setting, see “Configuring Basic Settings” on page 4–7. In all of the above
modes of operation, only the PV Inverter exports energy to the grid. The Conext
NOTICE
AC COUPLED PV INVERTER COMPATIBILITY
AC power generated by AC coupling PV inverters with Conext SW must be
consumed by AC loads or used to charge batteries. As an alternative, the
excess power produced from a PV inverter can be routed to dump loads. Do
not AC couple PV inverters with the Conext SW that are unable to reduce,
derate or cease the excess PV inverter power in response to the changes in
AC line frequency controlled by the Conext SW. Consult the manufacturer's
specifications of your PV inverter and confirm compatibility.
Failure to follow these instructions can result in equipment damage.