Siemens SENTRON PAC4200 - Measuring accuracy

Technical data
11.1 Technical data
SENTRON PAC4200
154 Manual, 09/2008, A5E02316180B-01
Measuring inputs for current
Only for connection to AC power systems via external current transformers
Input current I
I
Rated current 1 AC 3~ x / 1 A
Rated current 2 AC 3~ x / 5 A
Measuring range
1)
for current 10% to 120% of rated current
Measuring range
1)
for power 1 % to 120 % of rated current
Surge withstand capability 100 A for 1 s
Max. permissible continuous current 10 A
Power consumption per phase 4 mVA at 1 A
115 mVA at 5 A
Zero point suppression 0 to 10% of rated current
1) The measuring range is the range within which the accuracy data applies
Measuring accuracy
Measured variable Accuracy class acc. to IEC 61557-12
Root-mean-square value of the voltages (ph-ph,
ph-n)
0,2
Root-mean-square value of the phase-to-phase
currents and the neutral currents
0.2
Apparent power 0.5
Active power 0.2
Total reactive power (VAR
tot
) 1.0
Reactive power (VAR
n
) 1.0
Reactive power (VAR
1
) 1.0
Cos φ 0.2 %
1)
Power factor 2.0
Phase angle +/-1°
1)
Frequency 0.1
Apparent energy 0.5
Active energy 0.2
Reactive energy 2.0
THD voltage referred to the fundamental 2.0
THD current referred to the fundamental 2.0
Voltage unbalance referred to amplitude and phase 0.5
Current unbalance referred to amplitude and phase 0.5
1)
3rd to 31st odd harmonic of the voltage referred to
the fundamental
2.0
3rd to 31st odd harmonic of the current referred to
the fundamental
2.0
1)
The IEC 61557-12 standard does not specify any accuracy class for these variables. The
specifications refer to the maximum deviation from the actual value.
When measuring with external current or voltage transformers, the accuracy of the
measurement depends crucially on the quality of the transformer.