AT73C500
Starting Current
As default, the starting current is based on 5A basic current
and 80A full scale current range.
Voltage
UN
Starting Current
Min Typ
Max Units
0.004 IB
Temperature Coefficient
Measured with the internal reference voltage source of
AT73C501/AT73C502.
Current
0.1IB...IFS
0.1IB...IFS
Mean Temperature Coefficient
Power
Voltage Factor Min Typ Max
UN
1.000
UN
0.5
lagging
0.02 0.04
0.02 0.04
Units
%/K
%/K
Other Parameters
The accuracy of the following parameters is measured in
the conditions below unless otherwise indicated in the
parameter field of the table. The measurement error has
been calculated based on values averaged over 1min
period.
Parameter
Nominal voltage, UN
Full-scale voltage, UFS
Full-scale current, IFS
Base current, IB
Frequency, f
Power factor, PF
Harmonic contents of voltage
Harmonic contents of current
Temperature, T
AT73C500 master clock
Nominal Value
230V, ±1%
270V
80A
5A
50.0 Hz, ±0.3%
1
0%
0%
23C, ±2°C
3.2768 MHz
Table Apparent Power and Energy Measurement
Apparent Power and Energy Error
Current
Min Typ Max
0.05IFS...IFS
-0.5
+0.5
0.005IFS...0.05IFS
-2.0
+2.0
0.001IFS...0.005IFS
-5.0
+5.0
Units
%
%
%
The accuracy of Power Factor measurements was tested
with PF values 0.5, -0.5, -1 and 1.
Table Power Factor Measurement
Power Factor Error
Current
Min Typ Max Units
0.05IFS...IFS
-0.5
+0.5 %
0.005IFS...0.05IFS
-2.5
+2.5 %
Table Phase Voltage Measurement
Phase Voltage Error
Voltage
0.2UFS...UFS
Min Typ Max Units
-0.5
+0.5
%
Table Phase Current Measurement
Power Factor Error
Current
Min Typ Max Units
0.05IFS...IFS
-0.5
0.005IFS...0.05IFS
-2.5
+0.5
%
+2.5
%
Table Frequency Measurement
Frequency Error
Frequency
Min Typ Max Units
40 Hz...100 Hz
-0.5
+0.5 %
27