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5-18
Q
To increase/decrease a voltage reading by y percent, multiply the gain factor by (100 + y)/100.
Q
Current Gain Factors: 4-byte signed LSB values with 16 bits of fraction that are used as a
divisive factor.
Q
To increase/decrease a current reading by y percent, multiply the gain factor by 100 (100 + y).
Q
Phase Compensation Factors: 2 -byte signed LSB values in units of 0.01” of additive Power
Factor shift.
Q
To increase/decrease power at 600 in Quadrant 1 by y percent, modify the Phse Compensation by
Change by y Multiply by
Increase 2% +2 102/100 = 1.02
Decrease 5% -5 95/100 = 0.95
As Stored (LSB) MSB Decimal Scaled Meaning
0x000000100 0x000010000 65536 1.00000 x/1.00 (unity)
0x0711C0100 0x00000E8BA 59578 0.90909 x/0.90909 (magnification 10%)
0x0711C0100 0x000011C71 72817 1.11110 x/1.11110 (diminution 10%)
Multiply byChange by y
Increase 2% +2 100/102 = 0.98039
Decrease 5% -5 100/95 = 1.05263
As Stored (LSB) MSB Decimal Scaled Meaning
0x00000 0x00000 0 0.00 No Phase Shift
0x00200 0x00002 2 0.02 +0.02
0
PF Shift
0x0FEFF 0x0FFFE -2 -0.02 -0.02
0
PF Shift
01
50
60 cos
100 y
−
⎡⎤
−
⎢⎥
+
⎣⎦
Change by y Modified by
Increase 2%
Decrease 5%
+2
-2
60
0
-cos
-1
(50/102) = 60
0
-cos
-1
(0.49020) = 600-60.65
0
= -0.65
0
60
0
-cos
-1
(50/95) = 60
0
-cos
-1
(0.52632) =600-58.24
0
= +1.76
0