18
017-882-B0-001 Rev. E (06/2018)
1.0 Introduction, Continued
• When set to Individual Battery Voltage Mode, if individual battery voltage is lost, the unit automatically reverts
back to Battery String Voltage Mode and "Low Battery Cutoff” (EOD) will revert back to default value based on
battery type.
• When acceptable AC line voltage returns, the power supply returns to AC line operation after a 10 to 20 second
lag. This delay lets the AC line voltage and frequency stabilize before the control logic phase-locks the inverter’s
output to the utility input. The control logic then de-energizes the isolation relay, reconnects the AC line to the
primary of the ferroresonant transformer and disables (turns off) the inverter. This results in a smooth, in-phase
transfer back to utility power without interruption of service to the load. The battery charging circuit then activates
to recharge the batteries in preparation for the next power outage.
1.2.3 Charger Modes of Operation
Table 1-1, Low Battery Cutoff (EOD)
Table 1-2, Charger Modes of Operation
HP Batteries
GXL Batteries
XTV Batteries
OTHER Batteries
Fixed
Fixed
Fixed
Fixed
String Low Battery
Cutoff (EOD)
30.6 VDC
(1.70 V/C)
31.5 VDC
(1.75 V/C)
31.5 VDC
(1.75 V/C)
31.5 VDC
(1.75 V/C)
Individual Low
Battery Cutoff
(EOD)
Default
Minimum
Maximum
HP Batteries
10.2 VDC
(1.70 V/C)
9.9 VDC
(1.65 V/C)
10.8 VDC
(1.80 V/C)
GXL Batteries
10.5 VDC
(1.75 V/C)
XTV Batteries
10.5 VDC
(1.75 V/C)
OTHER Batteries
10.5 VDC
(1.75 V/C)
AlphaCell Batteries
OTHER Batteries
HP
GXL
XTV
Default
Minimum Maximum
Float V/C
2.25
2.27
2.25
2.27
2.10
2.35
Accept V/C
2.35
2.40
2.35
2.40
2.20
2.45
Automatic
30-Minute Refresh
On/Off
ON
ON
OFF
OFF
OFF
OFF
Manual 24-Hour
Refresh On/Off
OFF
(Programmable)
OFF
(Programmable)
OFF
(Programmable)
OFF
(Programmable)
OFF
ON
Refresh V/C
2.45
2.45
2.45
2.45
2.40
2.50
Rest On/Off
ON
OFF
ON
OFF
(Programmable)
OFF
ON
Temperature
Compensation
-4mV/ºC/cell
-5mV/ºC/cell
-3.3mV/ºC/cell
-5mV/ºC/cell
(Programmable)
0 mV/
ºC/cell
-5mV/
ºC/cell
If a battery type other than an AlphaCell is installed, it is the responsibility of the technician to review the proper
charging specifications for the battery used.
NOTICE
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