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900-00277-01-001 Rev A ©2021 OutBack Power. All Rights Reserved.
Operation
Grid Relay
The Mojave inverter uses mechanical relays to connect the inverter, AC sources, and loads. The
G
RID
and
G
EN
terminals have separate, independent relays. These are not interchangeable. Each
input has a separate set of acceptance criteria (also known as “enter service” criteria). (See the
Generator
tab on page 46.)
Until the grid relay energizes, the
G
RID
terminals are electrically isolated from
L
OAD
. When the
relay closes, the
G
RID
and
L
OAD
terminals are electrically common. (The
G
EN
terminals remain
isolated.) When the relay changes states, the physical transfer delay is as fast as 20 milliseconds.
The inverter’s input is limited to 55 Aac per phase or line. The continuous loads should never
exceed this amount. When connected to an AC source, the inverter cannot limit the load current.
The
G
RID
or
L
OAD
circuit breakers may trip.
CAUTION: Equipment Damage
Current draw in excess of the recommended amount can damage the inverter’s components.
This damage is not covered by warranty. Use protective devices of appropriate size.
IMPORTANT:
Do not apply generator power to the
G
RID
terminals.
Do not apply grid power to the
G
EN
terminals.
NOTES:
The relay does not open during any stage of
Time of Use
. (See page 36.)
The neutral connections are not switched. Neutral conductors use a common bus bar.
The independent inputs are intended to simplify the connection to multiple AC sources;
however, the inverter can only use one input at a time. If both inputs are powered, the
default setting is for the inverter to accept the
G
RID
input.
If the grid voltage or frequency vary too widely, the inverter will disconnect itself.
However, any variations within the inverter’s acceptance range will be transferred to
the loads. The inverter does not “clean up” or condition the power from the source.
Power Limits
The inverter’s settings control the amount of power (kilowatts) that the inverter uses from the grid.
These settings are meant to protect an AC source of limited size, as well as other possible limits to
the system. If necessary, adjust these settings to match the input size.
Import limit (W)
attempts to restrict the total amount of power used from the grid. This setting affects
Charge from grid limit (W)
. It does not affect
Export limit (W)
.
Export limit (W)
is reserved for future use.
Charge from grid limit (W)
, as indicated by its name, restricts the amount of power used to charge
batteries from the grid. This number is limited by the
Import limit (W)
setting.
See the next page for more information.
W
W
W
