71M6513/71M6513H
3-Phase Energy Meter IC
A Maxim Integrated Products Brand
DATA SHEET
SEPTEMBER 2011
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
This parameter is added to the Watt calculation to compensate for input noise
and truncation.
0x2F
QUANT
0
LSB=(VMAX*IMAX / In_8) *1.04173*10-9 W
This parameter is added to the VAR calculation to compensate for input noise
and truncation.
0x34
0x35
QUANT_VAR
QUANT_I
0
0
LSB = (VMAX*IMAX/In_8) * 1.04173*10-9 W
This parameter is added to compensate for input noise and truncation in the
squaring calculations for I2 and V2.
LSB=VMAX2*1.04173*10-9 V2
LSB= (IMAX2/In_82)*1.04173*10-9 A2
Scale factor for the VAR calculation. The default value of KVAR should never
need to be changed.
0x3B
0x64
KVAR
6448
0
Offset for low-current measurement on V3.
LSB = = 9.4045*10-13 IMAX2 A2h
QUANT_V3
TYPICAL PERFORMANCE DATA
Wh Accuracy at Room Temperature
0 Deg
0.2
0.15
0.1
60 Deg
-60 Deg
180 Deg
0.05
0
1
3
200
0.3
10
30
25
100
-0.05
-0.1
-0.15
-0.2
0.1
1
10
100
1000
A
Figure 24: Wh Accuracy, 0.3A - 200A/240V
VARh Accuracy at Room Temperature
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