Battery Time Remaining - Eaton APS3-400 Series Installation And Operation Manual

Access Power Solutions Installation Guide (APS3-400 Series)

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
Battery Time
Remaining
Estimated State of
Charge (SOC)
For details refer to Battery Time Remaining in the SC200 or SC100 System Controller Operation
Handbook (see Related Information on page i).
8
Description
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.
The estimated charge left in the battery (Ah).
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-52D
Where to find:
SC200 or SC100: Menu >
Controls > Batt Time
Remaining
DCTools/Web: Batteries
July 2010