PowerLogic PM-620 - Power Factor Min;Max Example

Bulletin No. 3020IM9503R6/98 Power Meter
December 1998 Chapter 8—Metering Capabilities
 1998 Square D All Rights Reserved 59
WATTS POSITIVE (+)
VARS NEGATIVE (–)
P.F. LAGGING (–)
REAL
POWER
REACTIVE
POWER
Quadrant
1
Quadrant
2
Quadrant
3
Quadrant
4
WATTS NEGATIVE (–)
VARS NEGATIVE (–)
P.F. LEADING (+)
Reverse Power Flow
Normal Power Flow
WATTS NEGATIVE (–)
VARS POSTIVE (+)
P.F. LAGGING (–)
WATTS POSITIVE (+)
VARS POSTIVE (+)
P.F. LEADING (+)
Unity
1.00
LAG
(-)
LEAD
(+)
-0
+0
.8
.6
.4
.2
.2
.4
.6
.8
Minimum
Power Factor
-.7 (lagging)
Maximum
Power Factor
.8 (leading)
Range of Power
Factor Values
Figure 8-1: Power factor min/max example
Figure 8-2: Default VAR sign convention