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900-00277-01-001 Rev A ©2021 OutBack Power. All Rights Reserved.
Operation
Inverting
This is the Mojave inverter’s primary function. The inverter converts DC voltage from the Mojave
battery into AC voltage that is usable by AC loads. It will continue to do this as long as the batteries
have sufficient energy.
The inverter’s design uses a transformer and high-frequency H-Bridge FET modules to achieve the
required high-wattage output. It can deliver the rated wattage continuously at 25°C. The maximum
output is derated at temperatures exceeding 40°C. See page 88 for worst-case derated output.
Calculate the total load wattage so that it does not exceed the inverter’s capacity. When excessive
load is applied, the inverter’s output current will be limited and the voltage waveform may be
distorted. If enough overload occurs, its output voltage will drop low enough that it will shut down
with an undervoltage error (displayed under the
EVENTS
view and the
Inverter
tab under the
STATUS
view).
IMPORTANT:
The Mojave inverter cannot support severe output load imbalance. It can maintain
a load difference of no more than 4.2 kVA continuously between the L1 or L2 output
(a neutral current exceeding 35 Aac). For example, it cannot maintain the inverter’s
full output of 8 kVA on L1, even if the load on L2 is 0.
Neutral currents exceeding 35 Aac will be current-limited (similar to an excessive load)
and may result in undervoltage.
The Mojave ESS requires the Mojave Lithium-Ion Battery for normal operation. No other
DC sources are supported for this product.
CAUTION: Equipment Damage
Do not substitute other DC sources in place of the Mojave Lithium-Ion Battery. High or
irregular voltages may damage the inverter.
AC Voltage
The Mojave inverter’s nominal voltage is 120/240 Vac (split-phase), consisting of 120 Vac on L1
and L2. The
Inverter AC Voltage (V)
set point can adjust the output voltage for off-grid operation
in applications that require a more specific nominal voltage.
The
Inverter AC Voltage (V)
adjustment is applied to both single-phase output voltages on the
L
OAD
L1
and
L2
terminals (with respect to neutral). For example, if
Inverter AC Voltage (V)
is
set to a value of
125
, both the L1 and L2 outputs will read 125 Vac. The total output voltage will
become 250 Vac.
AC Frequency
The Mojave inverter’s nominal frequency is 60 Hz. The
Inverter Operating Frequency (Hz)
set point can adjust the output frequency for off-grid operation in applications that require a more
specific nominal frequency.
NOTES:
The Mojave inverter only supports split-phase systems where the center-tap neutral is a
grounded conductor. It cannot support 230 Vac (single-phase) loads or power systems.
It cannot support three-phase loads or power systems, or any system where L1 and L2
are unbalanced by more than 5% in voltage.
The Mojave inverter cannot support 50 Hz loads or power systems.
