Front Panel Controls and Indicators
975-0012-01-02 Rev A 3–7
Battery Charger Rate
The Battery Charger Rate potentiometer sets the maximum charge current
supplied to the battery bank and is also used to regulate constant current in the
Bulk Charge Mode. The level should be adjusted to provide a charge rate less than
or equal to the amp-hour capacity of the battery bank divided by a factor of five.
Example:
1. Inverter DR1512 has a maximum charge rate of 70 amps.
a) Battery bank amp-hour capacity = 500 amp-hours using gel cell batteries.
b) Divide the amp-hour capacity by 5 (500/5 = 100).
c) Set the potentiometer to MAX (70 amps) as it is less than 100.
2. Inverter DR1512 has maximum charge rate of 70 amps.
a) Battery bank amp/hour capacity is 250 amp-hours using gel cell batteries.
b) Divide the amp-hour capacity by 5 (250/5 = 50).
c) Set the potentiometer to approximately 71% (50 amps).
Important:
Some loads constantly draw power even though they are switched OFF.
These include: TVs with instant-ON circuits, microwaves with digital displays, VCRs,
etc. It is best to operate these devices from another circuit or install a switch to turn these
OFF completely or don’t use the Search Mode.
Important:
When the SEARCH MODE is used with series stacked inverters, only
120 Vac loads connected to the “master” inverter will bring the unit out of the search
mode. See “AC Transfer Voltage” on page 3–10.
Figure 3-3
Battery Type Selector Adjustment
Search Mode
Potentiometer
Lower wattage device
turns ON inverter
Higher wattage device
turns ON inverter
DEFEAT Switches
Search Mode OFF
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