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SC100 Handbook
38
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
Information
The following information is available about
Battery Characterization
.
Parameter
Description
Where to find:
State
Locked Out:
A characterization cannot start. See
Lock
Out Remaining
(below).
Inoperative:
Battery characterization data is not
loaded,
End Voltage
is below the characterization end
point, or the bus voltage or battery current is
unavailable.
Inactive:
Battery Charge State
is
Floating
or
Charge
.
See
Battery Charge State on page
Active:
The battery is being characterized
.
DCTools: Control Process >
Battery Characterization
Maximum
Remaining Time
The maximum time to the end of the currently active
Battery Characterization
.
This value is not available for the initial
characterization.
Lockout Remaining The time remaining until a
Battery Characterization
can
be started (after the last ac power fail). Set by the
Lockout
period.
Count Down
The time to the start of the next scheduled
Battery
Characterization
.
This value is N/A when a characterization is in
progress or Battery Characterization is
Disbaled.
Offset Voltage
The adjustment to the bus voltage being applied due to
the
Battery Characterization
. While a
Battery
Characterization
is running, the rectifiers are turned
down to force the battery to carry the load.
Initial Characterization
Use the following procedure to characterize a battery for the first time.
This will provide the most accurate characterization data. However, if the characterization data
from a battery of the same size and type is available, then this can be added to the Battery
Characterization Table manually. The following characterization is then not required.
It will take at least 10 hours to characterize a battery.
During a
Battery Characterization
the bus voltage will gradually reduce to the battery end
voltage. Ensure that this will not affect the operation of any equipment connected to the dc
power system.
1
Check that all battery strings are connected and any LVD contactors are connected.
During a battery characterization, LVD contactor disconnection is inhibited. If any LVD
contactor is configured to connect during a battery discharge then set it to Manual Connect to
prevent operation during the battery characterization.
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