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CHAPTER 3: INTERFACES
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
1.
Establish communications with the relay.
2.
Select the Setpoint > System Setup > Voltage Sensing menu item.
3.
Select the Bus VT Secondary setpoint by clicking anywhere in the parameter box. This
will display three arrows: two to increment/decrement the value and another to
launch the numerical keypad.
4.
Clicking the arrow at the end of the box displays a numerical keypad interface that
allows the user to enter a value within the setpoint range displayed near the top of the
keypad: Click = to exit from the keypad and keep the new value. Click on X to exit from
the keypad and retain the old value.
5.
For setpoints requiring non-numerical pre-set values (e.g. 3-Phase voltage
connection below), clicking anywhere within the setpoint value box displays a drop-
down selection menu arrow. Select the desired value from this list.
6.
For setpoints requiring an alphanumeric text string (e.g. "relay name"), the value may
be entered directly within the setpoint value box.
7.
In the Setpoint > System Setup > Voltage Sensing dialog box, click on Save to save
the values into the . Click YES to accept any changes and exit the window. Click
Restore to retain previous values. Click Default to restore Default values.
SOFTWARE SETUP
3–19
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