Datasheet

71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
© 2005-2011 Teridian Semiconductor Corporation Page: 77 of 104
A Maxim Integrated Products Brand
Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation effects as well as scaling
factors.
CE
Address
Name Default Description
0x2F QUANT 0
This parameter is added to the Watt calculation to compensate for input noise
and truncation.
LSB=(VMAX*IMAX / In_8) *1.04173*10
-9
W
0x34 QUANT_VAR 0
This parameter is added to the VAR calculation to compensate for input noise
and truncation.
LSB = (VMAX*IMAX/In_8) * 1.04173*10
-9
W
0x35 QUANT_I 0
This parameter is added to compensate for input noise and truncation in the
squaring calculations for I
2
and V
2
.
LSB=VMAX
2
*1.04173*10
-9
V
2
LSB= (IMAX
2
/In_8
2
)*1.04173*10
-9
A
2
0x3B KVAR 6448
Scale factor for the VAR calculation. The default value of KVAR should never
need to be changed.
0x64 QUANT_V3 0
Offset for low-current measurement on V3.
LSB = = 9.4045*10
-13
IMAX
2
A
2
h
TYPICAL PERFORMANCE DATA
Wh Accuracy at Room Temperature
Figure 24: Wh Accuracy, 0.3A - 200A/240V
VARh Accuracy at Room Temperature
200
100
30
25
10
3
1
0.3
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.1 1 10 100 1000
%Error
A
0 Deg
60 Deg
-60 Deg
180 Deg