PHA5539302-04

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 (in display) PF register range (through communication) PF formula
Quadrant 1 0 to +1 0 to +1 PF value = PF register value
Quadrant 2 -1 to 0 -1 to 0 PF value = PF register value
Quadrant 3 0 to -1 -2 to -1 PF value = (-2) - (PF register value)
Quadrant 4 +1 to 0 +1 to +2 PF value = (+2) - (PF register value)
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