Siemens ACCESS 9340 - Page 62

© 2008 Siemens Energy & Automation, Inc. All Rights Reserved.
ACCESS 9340 and 9360 Meters PMCM-9340D-0208
Chapter 4—Metering Capabilities 2/2008
EN–54
Figure 4–7: Reactive energy accumulates in four quadrants
PLSD110171
watts negative (–)
vars positive (+)
watts positive (+)
vars positive (+)
watts negative (–)
vars negative (–)
watts positive (+)
vars negative (–)
Reactive
Power In
Real
Power
In
Reverse
Power Flow
Normal
Power Flow
Quadrant
2
Quadrant
1
Quadrant
3
Quadrant
4