900-00277-01-001 Rev A
49
Operation
Upon connection, the generator power will be used to run any loads and charge batteries.
During automatic shutdown, the inverter will open its transfer relay for the
Cool down time
, then turns off
the generator. This avoids the condition of shutting off the generator while loaded.
If the loads exceed
Generator output rating (kVA)
, the inverter will support the loads by adding battery
power to the power used from the generator.
This function will discharge the batteries at a current level controlled by the BMS. The level may vary with
operating conditions such as temperature and the present state of the battery. This operation continues
until reaching lower target setting of
Minimum SoC
.
Generator Relay
The Mojave inverter uses mechanical relays to alternate between the states of inverting and of
accepting an AC source. The
G
RID
and
G
EN
terminals have separate, independent relays.
These terminals are not interchangeable. Each input has a separate set of acceptance criteria.
Until the generator relay energizes, the
G
EN
terminals are electrically isolated from
L
OAD
. When
the relay closes, the
G
EN
and
L
OAD
terminals are electrically common. (The
G
RID
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. When connected to an AC source, the inverter cannot limit the load current. The
G
EN
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 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 generator’s 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.
