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System Operation
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
27
► To set Auxiliary Temperature Shutdown
In DCTools go to
Control Processes
>
LVD
.
Set the Auxiliary Temperature High/Low Thresholds and Hysteresis values as required.
See System Alarms on page
Set
Enable Aux Temp Rectifier Shutdown
to
Enabled
.
If using PowerManagerII Groups, then in DCTools go to
Analog Inputs
. Set
Auxiliary
Temperature Group
as required.
See PowerManagerII online help for details.
All rectifiers will now shutdown if the
Auxiliary Temperature
is out of range.
AC Phase Voltages
The SC100 can display the three ac phase voltages in a three-phase system. The phase voltages
are the average ac voltages measured by one or more rectifiers supplied from each of the three
phases.
► To assign rectifiers to phases from the SC100 keypad
On the SC100 keypad go to: Menu > Identity > Rectifier Identity.
Select a rectifier.
As each rectifier is selected the Identify function will cause it to flash all its LEDs.
Choose
Phase
, then choose the ac phase that supplies the rectifier (
Phase 1
,
Phase 2
, or
Phase
3
).
Press
Select
.
Repeat for other rectifiers.
For best accuracy assign all rectifiers to the appropriate Phase.
► To assign rectifiers to phases in DCTools
Connect to the SC100 using DCTools. See details on page
In DCTools go to:
Rectifiers
. Expand the
AC Phase Allocations
table.
Copy the
Serial Numbers
of registered rectifiers from the
Rectifiers
table to the
Serial Number
column in the
AC Phase
Allocations table.
For each rectifier double click on the entry in the
Phase
column. Select the ac phase that
supplies the rectifier (
AC Phase 1
,
AC Phase 2
, or
AC Phase 3
).
► To view the phase voltages
On the SC100 keypad go to:
AC Voltage
. See Menu on page
In DCTools go to:
Analog Inputs
.
An AC Phase Rectifier Missing alarm is activated if a rectifier assigned to an ac phase is not
registered.
Low Voltage Disconnect (LVD)
Low Voltage Disconnects may be connected either as load disconnect or battery disconnect
depending on the dc power system model. They have two purposes:
to protect a VRLA battery from deep discharge and premature failure, and/or
to reduce the load on a battery under discharge so that high priority equipment operates
for a longer time after an ac supply failure.
Содержание SC100
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