Access Power Solutions Installation Guide (APS3-400 Series)
8
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-52D July 2010
Battery Time Remaining
The SC200 or SC100 obtains characterization data from either periodic battery discharges
(SC100) or every full battery discharge (SC200), to a specified end voltage.
During a battery discharge, the SC200 or SC100 uses this characterization data to calculate an
estimated time until the battery will reach the specified end voltage.
If a battery disconnect LVD is fitted then the end voltage will usually be the voltage at which the
LVD disconnects the battery.
Battery Time Remaining is designed for a constant power load. The accuracy of the time
remaining calculation will be reduced if the dc power system is connected to a predominantly
resistive (constant current) load.
The following information is available about
Battery Time Remaining
.
Parameter
Description
Where to find:
Battery Time
Remaining
During a battery discharge, this is the estimated time
until the battery voltage will be equal to the
End
Voltage,
at the present battery current.
Time Remaining
will be re-calculated if the load current varies during
discharge (for example, when a load disconnect LVD
operates).
Battery Time Remaining is only available if the
battery has been characterized
. See Battery
Characterization.
Estimated State of
Charge (SOC)
The estimated charge left in the battery (Ah).
SC200 or SC100: Menu >
Controls > Batt Time
Remaining
DCTools/Web: Batteries
For details refer to
Battery Time Remaining
in the SC200 or SC100 System Controller Operation
Handbook (see Related Information on page
).
