AT73C502 ATMEL Corporation, AT73C502 Datasheet - Page 25

• Manufacturer Part Number: AT73C502
• Description: Chip Set Solution for Watt-Hour Meters
• Manufacturer: ATMEL Corporation

The measurements are done according to IEC1036 specifi-
cation. The results are averaged over a period of 10s.
Before measurements, AT73C500 devices have been
operational for minimum 1h.
Parameter
General, 50 Hz line
frequency
Reactive Power and
Energy, Voltage and
Current Measurement
Line Frequency
Current
0.05I
0.1I
0.1I
0.2I
0.1I
0.2I
0.2I
- high limit (-3dB)
- low limit (-3dB)
- high limit
- low limit
- high limit
- low limit
B
B
B
B
B
B
...I
...I
...I
...I
B
FS
FS
FS
FS
Voltage
U
U
U
U
U
U
U
Measurement Bandwidth
N
N
N
N
N
N
N
Maximum Error
lagging
lagging
leading
leading
lagging
Factor
Power
1.000
1.000
0.25
0.5
0.5
0.8
0.8
Min
360
350
750
Min
-0.4
-0.2
-0.4
-0.4
-0.4
-0.4
-1.0
Typ
Typ
Max
30
40
20
+0.4
+0.2
+0.4
+0.4
+0.4
+0.4
+1.0
Max
Units
Units
Hz
Hz
Hz
Hz
Hz
Hz
%
%
%
%
%
%
%
Effect of Crosstalk
The error caused by crosstalk from one current input to
other two current inputs when the meter is carrying a sin-
gle-phase load.
Influence Quantities
The additional error caused by different influence quanti-
ties.
Current
0.1I
0.1I
Current
0.1I
0.1I
B
B
B
B
...I
...I
FS
FS
Voltage
0.9U
0.9U
1.1U
1.1U
Voltage
U
U
N
N
N
N
...
...
Single-Phase Load Error
N
N
Voltage Variation Error
lagging
Factor
Power
1.000
lagging
Power
Factor
1.000
0.5
0.5
Min
-0.2
-0.2
Min
-0.5
-0.5
Typ
Typ
Max
+0.2
+0.2
Max
+0.5
+0.5
Units
Units
%
%
%
%
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