Appendix A Technical Specifications
Parameter
Full Scale @ Input
Voltage
120VxPT @ 120V
400VxPT @ 690V
Line current
CT
Active power
0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
Reactive power
0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
Apparent power
0.36×PT×CT @ 120V
1.2×PT×CT @ 690V
Power factor
1.000
Frequency
Total Harmonic
999.9
Distortion, THD
V (I), %V f (%I f )
Total Demand
100
Distortion, TDD,
%
Active energy
Import & Export
Reactive energy
Import & Export
Apparent energy
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.
Series PM172 Powermeters
Measurement Specifications
Range
%
Reading
0.2
0.2
0.2
0.3
0.2
0.02
1.5
Class 0.2S under conditions as per IEC
62053-22:2003
Class 0.2S under conditions as per IEC
62053-22:2003, |PF| ≤ 0.9
Class 0.2S under conditions as per IEC
62053-22:2003
Accuracy
% FS
Conditions
0.01
10% to 120% FS
0.02
1% to 200% FS
0.02
1
|PF| ≥ 0.5
0.04
1
|PF| ≤ 0.9
0.02
1
|PF| ≥ 0.5
0.2
|PF| ≥ 0.5,
I ≥ 2% FSI
0.1
THD ≥ 1%,
V (I) ≥ 10% FSV
(FSI)
1.5
TDD ≥ 1%,
I ≥ 10% FSI
Range
0 to 1,150,000 V
Starting voltage 1.5% FS
0 to 40,000 A
Starting current 0.1% FS
-10,000,000 kW to
+10,000,000 kW
-10,000,000 kvar to
+10,000,000 kvar
0 to 10,000,000 kVA
-0.999 to +1.000
15 Hz to 480 Hz
0 to 999.9
0 to 100
0 to 999,999.999 MWh
0 to 999,999.999 Mvarh
0 to 999,999.999 MVAh
121
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