Power factor register format
The meter performs a simple algorithm to the PF value then
stores it in the PF register.
Each power factor value (PF value) occupies one floating point register for power factor (PF register). The meter and software interpret the PF register for all reporting or data entry fields according to the following diagram:
The PF value is calculated from the PF register value using the following formulae:
| Quadrant | PF range | PF register range | PF formula |
|---|---|---|---|
|
Quadrant 1 |
0 to +1 |
0 to +1 |
PF value = PF register value |
|
Quadrant 2 |
-1 to 0 |
-2 to -1 |
PF value = (-2) - (PF register value) |
|
Quadrant 3 |
0 to -1 |
-1 to 0 |
PF value = PF register value |
|
Quadrant 4 |
+1 to 0 |
+1 to +2 |
PF value = (+2) - (PF register value) |