Generator Input - OutBack Power Radian International Series Operator's Manual

When these conditions are met, the inverter will close its transfer relay and accept the input
source. This occurs after a delay which is specified below. If the conditions are not met, the
inverter will not accept the source. If it was previously accepted and then rejected, the inverter
will open the relay and return to inverting power from the batteries. This occurs after a specified
transfer delay, which is an adjustable menu item.
IMPORTANT:
The Radian's output voltage can be adjusted to a different nominal value for a particular region. (See
page 22.) If this occurs, the source acceptance range should be adjusted to match this nominal value or
the inverter may not accept the new source normally.
The voltage limits can be adjusted to allow (or exclude) a source with weak or irregular voltages.
o
These items are adjustable in a MATE3-class system display (Grid AC Input Mode and Limits or
Gen AC Input Mode and Limits). The settings are titled Voltage Limit Lower and Upper. There
can be side effects to changing the range of allowed voltages.
Each of the AC inputs has a settable Connect Delay. This is intended as a warmup period which
o
allows an input source to stabilize before connection.

The default setting for the G

The default setting for the G
These items are adjustable in the appropriate system display menu (Grid AC Input Mode and Limits
or Gen AC Input Mode and Limits).
NOTES :
The Grid Tied and GridZero input modes do not use these voltage, frequency and time acceptance
limits. They use the Grid Interface Protection and Grid Support settings instead. (See pages 15
and 37 for more information.) The inverter may not accept AC power if it meets the settings noted
here but does not meet the settings in these two menus.
AC acceptance is controlled separately between the Radian inverter's two inputs. An AC source that
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is unacceptable on one input may be acceptable on the other if the mode or settings are different.
Certain input modes such as Mini Grid may prevent the inverter from accepting AC power even if
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electrical conditions are met. (See page 16.)
Several items external to the inverter may prevent the inverter from accepting AC power even if
electrical conditions are met. Some examples are the High Battery Transfer, Grid Usage Time, or
Load Grid Transfer functions, all of which are operated by the system display. Another example is
the AC I hot key menu of a MATE3-class system display, which can order all inverters to
NPUT
disconnect when set to Drop.

Generator Input

A generator should be sized to provide enough power for all inverters, both for loads and for
battery charging. The generator's voltage and frequency must match the Radian inverter's
acceptance settings. Some generators may not be able to maintain AC voltage or frequency for
long periods of time if they are loaded more than 80% of rated capacity.
The generator is required to have a stable output before its power is accepted by the inverter.
Some generators with less stable or uneven outputs may not be accepted. The use of the
Generator input mode may assist with this problem.
If a smaller generator must be used, the Support input mode may be able to provide support to
the loads from the batteries during peak load times. The inverter can recharge the batteries
during non-peak times.
900-0145-01-02 Rev A
input is 0.2 minutes (12 seconds).
RID
input is 0.5 minutes (30 seconds).
EN
Operation
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