VAMP 259 - Direction of Power and Current

Technical description
4 Measurement functions
4.9 Direction of power and current
VM259.EN007
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4.9. Direction of power and current
Figure 4.9-1 shows the concept of three phase current direction
and sign of cos and power factor PF. Figure 4.9-2 shows the
same concepts, but on a PQ-power plane.
Figure 4.9-1 Quadrants of voltage/current phasor plane
Figure 4.9-2 Quadrants of power plane
Table of power quadrants
Power
quadrant
Current
related to
voltage
Power
direction
cos
Power factor
PF
+ inductive
Lagging
Forward
+
+
+ capacitive
Leading
Forward
+

 inductive
Leading
Reverse

+
 capacitive
Lagging
Reverse

