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18-1
Chapter 18
Power Quality Monitoring
Introduction
Power Quality Monitoring or System Monitor displays a Bar graph screen. This screen
shows whether important Power Quality parameters meet requirements. Parameters
include:
1. RMS voltages
2. Harmonics
3. Flicker
4. Dips/Interruptions/Rapid Voltage Changes/Swells (DIRS)
5. Unbalance/Frequency/Mains Signaling.
Figure 18-1 shows the screen and its properties.