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108 DOCA0005EN-04
Power, energy and power factor iEM3100 / iEM3200 / iEM3300 series user manual
Power factor register format
Each power factor value (PF value) occupies one floating point register for power factor (PF register).
The meter performs a simple algorithm to the PF value then stores it in the PF register. The meter and
software interpret the PF register for all reporting or data entry fields according to the following
diagram:
0
-1 0
+1
0
-2
-1 0
+1
+2
0
-1
0
+1
5.0+5.0-
+0.5-0.5
-2 +2
-1
00
+1
-0.5
+0.5
+1.5-1.5
Quadrant 2
-1 PF 0
Quadrant 3
-1 PF 0
Quadrant 1
0 PF +1
PF value
Quadrant 3
0 to -1
Quadrant 4
0 PF +1
PF register
-1 to 0
0 to +1
+1 to 0
Quadrant 2
Quadrant 1
Quadrant 4
-2 to -1
-1 to 0 0 to +1
+1 to +2
Quadrant 2
-1 PF register 0
0 PF register +1
Quadrant 3
-2 PF register -1
Quadrant 4
+1 PF register +2
Quadrant 1