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

PF value

-0.5+0.5

Quadrant 2

Quadrant 1

-1 ” PF ” 0

0 ” PF ” +1

+1

 

Quadrant 3

 

Quadrant 4

 

 

-1 ” PF ” 0

 

0 ” PF ” +1

 

-0.5

 

 

 

 

 

+0.5

 

 

 

0

 

 

 

 

 

 

 

 

 

0 to -1

 

-1 to 0

 

0 to +1

 

+1 to 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

-1

0

+1

0

Quadrant 3

Quadrant 2

 

Quadrant 1

Quadrant 4

-2

-1

0

+1

+2

PF register

-2 to -1

-1 to 0

0 to +1

+1 to +2

0

0

-0.5

+0.5

Quadrant 2

Quadrant 1

-1 ” PF register ” 0

0 ” PF register ” +1

-1 +1

Quadrant 3

Quadrant 4

-2 ” PF register ” -1

+1 ” PF register ” +2

-1.5

+1.5

-2

+2

108

DOCA0005EN-04

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Schneider Electric iEM3300, iEM3200, iEM3100 user manual Power factor register format, Quadrant, To +1 +1 to +2