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Measurement Specifications
Parameter, unit
Current harmonics,
100
% I
1
Harmonic voltage,
As for voltage
V
Harmonic current, A As for current
Harmonic kW
As for kW
Harmonic kvar
As for kvar
Harmonic power
As for power factor
factor
PT - the external potential transformer ratio
CT, CT primary current - the primary current rating of the external current transformer
FSV - voltage full scale
FSI - current full scale
U 1 - voltage fundamental
I 1 - current fundamental
1
Vavg =
(U L1/L12 + U L2/L23 + U L3/L31 )
3
À
@ 10% to 120 % of voltage full scale & 2% to 120 % of current full scale
NOTES
Accuracy is expressed as ± (percentage of reading + percentage of full scale) ± 1 digit. This does not include
1.
inaccuracies introduced by the user's potential and current transformers.
2.
These specifications assume voltage and current waveforms with THD
an operating temperature of 20 to 26
112
Full scale
Rdg
1
0.2
1
0.2
1
0.2
1
0.2
1
0.2
2 typical
1
Iavg =
(I L1 + I L2 + I L3 )
3
°
C.
Accuracy, %
Range
FS
Conditions
1 ≥ 10% FSI
I
0 to 100
FSI
×
I
1
1 ≥ 10%
U
As for voltage
FSV
1 ≥ 10% FSI
I
As for current
As for kW
As for kvar
As for power
factor
Resolution @ range
Front panel display
0.01
≤
5 % (except harmonic measurements) and
Technical Specifications
Comm.
0.01
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