Siemens SENTRON PAC4200 Manual page 154

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