900-00277-01-001 Rev A
41
Operation
Grid Input
When the Mojave inverter’s
G
RID
terminals are connected to a grid-quality AC source and the
Grid
Input
command is set to
Use
, the inverter will synchronize itself with the grid source and connect
to it. Its grid relay will engage, linking the
G
RID
terminals directly with the
L
OAD
. (See page 42.)
It can also use the grid to charge batteries. (See below; also, see
Battery Charging
on page
Error! Reference source not found.Error! Bookmark not defined.
.)
Charging from the Grid
This product will not import grid power to charge batteries under all conditions. It will not charge
from the grid if any of the following conditions are true:
Grid Input
is set to
Drop
in the
ACTIONS
view
Inverter
is set to
Off
in the
ACTIONS
view. If
Grid Input
is set to
Use
, the inverter will transfer power
to loads, but it will not charge batteries while the inverting function is off.
Charge from grid limit (W)
is set to
0
under the
Grid
tab (
SETTINGS
view)
Max Charge Current (A)
is set to
0
under the
Battery
tab (
SETTINGS
view)
Simplified ToU
is enabled and the inverter enters any of the
Peak Rate Period
time settings
under the
Inverter
tab (
SETTINGS
view)
The inverter will restrict charging from the grid if any of the following conditions are true:
Charge from grid limit (W)
is set to a low number
Max charge current (A)
is set to a low number
AC-coupled power, supplied by a GD inverter, is supplying most or all of the charging needs
Grid Protection Parameters
The inverter must wait for the configured grid-interactive delay period (usually 5 minutes) before it can
connect to grid power.
To be accepted, the utility grid must meet certain parameters, notably voltage and frequency.
Agreements for utility interconnection may require other specified settings. See below.
When these conditions are met, the inverter will close its grid relay and accept the grid.
If the conditions are not met, the inverter will not accept the grid.
When a grid instability, outage, or shutoff occurs during normal operation, the inverter will open the
grid relay. This isolates itself and the protected loads from the grid so that it may serve the loads
from the battery.
The loads powered by the inverter must not exceed the size of the inverter’s grid relay.
Grid Profile and Protection Settings
When a
Grid Profile
is selected, it preloads a series of grid protection settings that have been
designated according to each regulation or company. See page 39.