Ratio; Demand Window - Eaton Cutler-Hammer IQ 300 Series Instructions For Installation, Operation And Maintenance

IL17574C
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are 256 choices from 5 to 8000, displayed as follows:
•
5 to 110 in increments of 5
•
110 to 1000 in increments of 10
•
1000 to 1250 in increments of 25
•
1250 to 8000 in increments of 50
When the desired choice is displayed, press Enter to lock in the selection.
If the procedure completes successfully, Download OK appears briefly. The display
then returns to the previous screen.
4.10.7 PT Ratio
Note: See table 2.4 for data ranges before specifying
the PT ratio.
Scroll up or down the Edit Menu until you reach the PT
RATIO\1 option, press the Enter button.
This screen, shown in figure 4.34, displays the ratio of
the potential transformers connected to the IQ 300.
This screen initializes with the ratio of the potential
transformers being used with the IQ 300 selected and displayed.
To specify the potential transformer ratio of the potential transformers being used
with the IQ 300, press either of the Scroll arrows repeatedly to step through the
choices individually, or press and hold either of the Scroll arrows to step through the
choices rapidly. There are 256 choices from 1.0 to 1690, displayed as follows:
•
1.0 to 6 in increments of 0.1
•
6 to 20 in increments of 1
•
20 to 260 in increments of 5
•
260 to 1690 in increments of 10
Note: If no potential transformers are being used set the PT ratio at 1.0 to 1.
Note: Enter the PT Ratio two times every time you install the IQ 330. This will
ensure proper default voltage and calculation when your using the Voltage Trip
feature.
If the procedure completes successfully, Download OK appears briefly. The display
then returns to the previous screen.

4.10.8 Demand Window

Scroll up or down the Edit Menu until you reach the WINDOW MIN option, press
the Enter button.
This screen, shown in figure 4.35, displays the current value of the demand time
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For more information visit:
Effective Date: 2/04
IQ 300
www.cutler-hammer.eaton.com
X.X:X
PT RATIO\1
Figure 4.34 PT
Ratio Display
Effective Date: 2/04