GE 889 Instruction Manual page 119

CHAPTER 3: INTERFACES
889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 3-21: Orientation for Breakers and Switches
Status Objects
The status objects consist of digital operands. Up to 15 digital status elements can be
configured per SLD page. The status object acts as an LED on the screen. If the diagram
shows a circle with no color, it means the assigned input is low. If it shows a circle with red
color in it, the assigned input is high. The following figure shows an example of "Reclose
Blocked" signal in both On and Off state.
Figure 3-22: Reclose Blocked signal
In addition, Remote Breaker status objects are added for GE and IEC style. Remote breaker
status allows monitoring of three distant breakers. These objects are not controllable and
hence cannot be used for selection and operation.
Metering Objects
The metering objects consist of metering elements. Up to 15 metering elements can be
configured per SLD page. The metering object has an input for all the available FlexAnalog
values. The units for these values are dynamically scaled as per the defaults. The following
figure shows the metering element on a configured SLD.
SOFTWARE INTERFACE
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