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Operation
900-0020-01-00 Rev A 15
Functions
The items in this section are states of operation common to all Radian inverters. These functions can
be used in most or all of the input modes described in the preceding section. Some can be manually
selected or enabled; others are automatic.
All items identified as settable or adjustable have set points which can be accessed using the remote
system display. (See the MATE3 Owner’s Manual for instructions on locating these set points.) The
default settings and ranges of adjustment are listed beginning on page 47 of this manual.
Inverting
The Radian inverter converts DC voltage from batteries into AC voltage that is usable by AC
appliances. It will continue to do this as long as the batteries have sufficient energy. The batteries can
be supplied or recharged from other sources, such as solar, wind, or hydroelectric power.
The inverter’s design uses two transformers and two high-frequency H-Bridge FET modules to achieve
the required high-wattage output. When not in use, the dual design allows half the inverter to shut
down for lower idle consumption.
The Radian inverter requires batteries to operate
. Other sources may not maintain DC voltages
that are consistent enough for the inverter to operate reliably.
CAUTION: Equipment Damage
Do not substitute other DC sources in place of the batteries. High or irregular voltages
may damage the inverter. It is normal to use other DC sources in conjunction with the
batteries and the inverter, but not in place of the batteries.
Certain features will affect the inverter’s operation. These features only operate when the inverter is
generating AC power on its own. They do not function when the inverter is being supplied by an
AC source.
Low Battery Cut-Out
: This feature prevents the inverter from draining the batteries completely. It will stop
functioning and give a
Low Battery V
error when the DC voltage drops below a specified level for 5 minutes.
This appears as an Event on the MATE3 system display, as described in the MATE3 Owner’s Manual. It is one of
the Error messages described on page 39. This function is intended to protect both the batteries and the
inverter’s output. (Continuing to invert on a low DC voltage may produce a distorted waveform.) This item is
adjustable.
Low Battery Cut-In
: The recovery point from Low Battery Cut-Out. When the DC voltage rises above a
specified level for 10 minutes, the low battery error will clear and the inverter will resume functioning. This
item is adjustable.
Connecting an AC source to charge the batteries will also clear a low battery error.
Output Voltage
: The inverter’s AC output voltage can be adjusted up or down by a certain amount, to allow
for conditions. This item is adjustable.
The inverter is also controlled by a high battery cut-out function. If the DC voltage rises above a specified
level, the inverter will immediately stop functioning and give a
High Battery V
error. This appears as an
Event on the MATE3 system display, as described in the MATE3 Owner’s Manual. This is one of the Error
messages displayed on page 39 of this manual. (If the voltage drops below this point, the inverter
automatically recovers.)
For the standard GS8048 inverter, the high battery cut-out voltage is 68 volts. It cannot be changed.
This function is intended to protect the inverter’s output and loads. Continuing to invert on a high DC
voltage may produce a distorted waveform. Note that the inverter’s high battery cut-out does not alleviate
or solve the high battery condition itself; the cause is an external condition.