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IL17569
Effective June, 2001
Metering Accuracy:
Input Signal Frequency necessary for accurate operation 60 Hz nominal, 57-63 Hz (5%)
50 Hz nominal, 47-53 Hz (5%)
Frequency Measurement Accuracy +0.02 Hz
Clock Accuracy Free running + 1 minute/month @ 25°C.
Automatically updated by PowerNet host when present
Principal Parameters Range Accuracy
Current (Amps) 0.02 to 20 per Unit at < 2 • CT Rating: ±0.5% of CT Rating
Ia, Ib, Ic, Ir, Ix at > 2 • CT Rating: ±0.5% of Reading
Sequence Currents 0.02 to 20 per Unit ±1% of Nominal
Main Voltage (φφ & φG) 0 to 160V ±0.5% of Nominal, ±0.2 V
Sequence Voltages 0 to 160V ±1% of Nominal
Aux Voltage 0 to 320V ±1% of Nominal
Phase Angle for I & V 0 to 360° ±1° at Nominal Voltage
System Frequency 45 to 65 Hz ±0.02 Hz
Amp Demand 0.02 to 20 per Unit ±0.5%
Watt Demand 0 to 4000 MW ±1.0% FS
1
for PF = Unity
±1.5% FS
1
for PF = -0.5 to 0.5
Watts 0 to 4000 MW
Watt-hours 0 to 999,999 MWh
Var Demand 0 to 4000 Mvar
±1.5% FS
1
for PF = -0.5 to 0.5
Vars 0 to 4000 Mvar
Var-hours 0 to 999,999 Mvarh
VA Demand 0 to 4000 MVA
±1% FS
1
VA 0 to 4000 MVA
VA-hours 0 to 999,999 MVAh
Apparent Power Factor -1 to +1 ±0.02, for Load Currents Above 20% Rated
Displacement Power Factor -1 to +1 ±0.02, for Load Currents Above 20% Rated
Total Harmonic Distortion 0 to 9999 ±1%
Other Metering Accuracy ±1%
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