Trending - GE 489 Instruction Manual

3.2 SOFTWARE INTERFACE
Trending from the 489 can be accomplished via the 489PC program. Many different parameters can be trended and
graphed at sampling periods ranging from 1 second up to 1 hour.
The parameters which can be Trended by the 489PC software are:
Currents/Voltages:
Power:
3
Temperature:
Others:
1. With the 489PC running and communications established, select the Actual > Trending menu item to open the trending
window.
2. Click Setup to enter the Graph Attribute page.
3. Select the graphs to be displayed with the pull-down menus beside each Description. Change the Color, Style, Width,
Group#, and Spline sections as desired. Select the same Group# to scale all parameters together.
4. Click Save to store the graph attributes and OK to close the window.
3-12
Phase Currents A, B, and C
Generator Load
Ground Current
System Frequency
Volts/Hz
rd
Neutral Voltage (3 harmonic)
Power Factor
Reactive Power (Mvar)
Positive Watthours
Negative Varhours
Hottest Stator RTD
RTDs 1 through 12
Analog Inputs 1, 2, 3, and 4
Figure 3–5: GRAPH ATTRIBUTE WINDOW – TRENDING
489 Generator Management Relay
Neutral Currents A, B, and C
Negative Sequence Current
Differential Currents A, B, and C
Voltages Vab, Vbc, Vca Van, Vbn, and Vcn
Neutral Voltage (fundamental)
rd
Terminal Voltage (3 harmonic)
Real Power (MW)
Apparent Power (MVA)
Positive Varhours
Thermal Capacity Used
Tachometer
3 USER INTERFACES

3.2.5 TRENDING

GE Multilin