CHAPTER 3: INTERFACES
SOFTWARE INTERFACE
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
3–25
Engaging a Device
The software may be used in on-line mode (relay connected) to directly communicate with
a relay. Communicating relays are organized and grouped by communication interfaces
and into sites. Sites may contain any number of relays selected from the product series.
Entering Setpoints
The System Setup page is used as an example to illustrate entering setpoints. In this
example, we are changing the voltage sensing setpoints.
1.
Establish communications with the relay.
2.
Select the
Setpoint > System > Voltage Sensing
menu item.
3.
Select the Aux. VT Secondary setpoint by clicking anywhere in the parameter box. This
displays 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.
Summary of Contents for 845
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