E-Mon E-PS-A-RTU-N - Manual (Page 130)

Appendix A Technical Specifications
130 PowerSmart+ Advanced Power Quality Meter
Measurement Specifications
Accuracy Parameter Full Scale @ Input
Range
%
Reading
% FS Conditions
Range
Voltage 120VxPT @ 120V
400VxPT @ 690V
0.2 0.01 10% to 120% FS 0 to 1,150,000 V
Starting voltage
1.5% FS @ 120V
1.5% FS @ 690V
Line current CT 0.2 0.02 1% - 200% FS 0 to 40,000 A
Starting current 0.1% FS
Active power 0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
0.2 0.02 |PF| ≥ 0.5 1 -10,000,000 kW to
+10,000,000 kW
Reactive power 0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
0.3 0.04 |PF| ≤ 0.9 1 -10,000,000 kvar to
+10,000,000 kvar
Apparent power 0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
0.2 0.02 |PF| ≥ 0.5 1 0 to 10,000,000 kVA
Power factor 1.000 0.2 |PF| ≥ 0.5,
I ≥ 2% FSI
-0.999 to +1.000
Frequency 0.02 40 Hz to 70 Hz
Total Harmonic
Distortion, THD
V (I), %Vf (%If) 999.9 1.5 0.1 THD ≥ 1%,
V (I) ≥ 10% FSV
(FSI)
0 to 999.9
Total Demand
Distortion, TDD,
% 100 1.5 TDD ≥ 1%,
I ≥ 10% FSI
0 to 100
Active energy
Import & Export Class 0.2S under conditions as per IEC
62053-22:2003 0 to 999,999.999 MWh
Reactive energy
Import & Export Class 0.2S under conditions as per IEC
62053-22:2003, |PF| ≤ 0.9 0 to 999,999.999 Mvarh
Apparent energy Class 0.2S under conditions as per IEC
62053-22:2003 0 to 999,999.999 MVAh
1 @ 80% to 120% of voltage FS, 1% to 200% of current FS, and frequency 50/60 Hz
PT - external potential transformer ratio
CT - primary current rating of external current transformer
FSV - voltage full scale
FSI - current full scale
Vf - fundamental voltage
If - fundamental current
NOTES
1. Accuracy is expressed as ± (percentage of reading + percentage of full scale) ± 1 digit.
This does not include inaccuracies introduced by the user's potential and current
transformers. Accuracy calculated at 1second average.
2. Voltage and Current measurement accuracy is ≤ 0.05 % at nominal value
3. Specifications assume: voltage and current waveforms with THD ≤ 5% for kvar, kVA
and PF, and reference operating temperature 20°C - 26°C.
4. Measurement error is typically less than the maximum error indicated.