Product Manual

Grid-interactive and Other Features
975-0638-01-01 Rev E 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 4–33).
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.
Storing the State of the Inverter Mode
You can enable or disable a feature called StoreInvState which, when enabled
remembers the state of the inverter mode prior to a power down (that is, when AC
and DC power sources are disconnected). When the Conext SW is powered up
again, the inverter mode reverts back to its prior state.
See “Advanced Features Menu” on page 4–33.
NoLoadVD
The No Load Voltage Derating (NoLoadVD) feature further reduces tare loss by
adjusting output voltage by +4%/-5% of nominal, over the full load range. That
means at 50% load, the output voltage is at nominal but 5% below nominal at no
load and up to 4% at full load. The feature results in slight increase on overall
operating efficiency but may result in visible flicker of incandescent or similar
lights during large sudden load changes.
See “Advanced Features Menu” on page 4–33.
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.
ConextSW-NA-OwnersGuide.book Page 13 Thursday, July 23, 2015 3:26 PM