Office temperature, End cell voltage, Plant load – GE Industrial Solutions Galaxy Manager User Manual

Page 31: Rectifier capacity, Battery strings, Hours of reserve, Total effective reserve ah

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Galaxy Manager

Issue 4.3 Preliminary January 2004

User Screens 3 - 17

automatically updated when a parameter is changed and the cursor is
moved to another parameter.

Office Temperature

All calculations are referenced to 77°F. This field allows you to see the
impact of ambient temperatures above or below this reference
temperature. Valid temperature range is from 40°F to 110°F. The default
temperature value is 77°F.

End Cell Voltage

Average voltage that each cell in all strings is permitted to discharge to
over the discharge period. Valid range for this parameter in the
Calculator is 1.75V to 2.00V. The default value is 1.86V.

Plant Load

Total system load of the system. For monitored systems, this is the
actual load current reported to Galaxy Manager. Valid load range for
this parameter is from 0 to 20000 amps. The default “What If” value for
plant load is 1.4 times the present system load.

Rectifier Capacity

Total rectifier capacity of the system. Valid capacity range is from 0 to
20000 amps. The default value is the present rectifier capacity of the
system.

Battery Strings

Number and type of battery strings. Enter the number of battery strings
(0 to 100) in the left-hand portion of the field, and select the battery type
from the drop-down box (listed in alphabetical order). The default
values in these fields are the number of strings and type of batteries
installed in the system. An additional battery string “What If?”
parameter is provided to allow a different battery type to be selected.

Hours of Reserve

Calculated hours of reserve for the system based on the entered
parameter values. If the hours of reserve time is between 3.6 and 4 hours
the displayed hours of reserve time value will be highlighted yellow. If
the hours of reserve time is less than 3.6 hours the displayed hours of
reserve time value will be highlighted red. This is based on a standard
4-hour reserve time.

Total Effective

Reserve AH

Calculated total effective amp-hour rating of all of the strings and
battery types installed. Also shown is an effective reserve amp-hour
reserve calculation for each battery type when multiple battery types are
used. The individual discharge current for each battery type is also
listed.

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