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
Line current CT 0.2 0.02 1% to 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 15 Hz to 480 Hz
Total Harmonic
Distortion, THD
V
(I), %V
f
(%I
f
)
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
V
f
- fundamental voltage
I
f
- 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. Specifications assume: voltage and current waveforms with THD ≤ 5% for kvar, kVA and PF,
and reference operating temperature 20
°C - 26°C.
3. Measurement error is typically less than the maximum error indicated.
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