Siemens UL 1066 - Page 153

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These data can be shown on the display of the trip units, transmitted to the PROFIBUS-DP via the COM15 module or to the MODBUS via
the COM16 module and transferred to the outputs of external
cmodules. Based on these data, conclusions can be drawn about
the condition of the power system.
Measured parameter Range Accuracy
1)
Currents I
L1
, I
L2
, I
L3
, I
N
30 - 8000 A ± 1 % of measurement range
Earth-fault current Ig
(measurement with external earth-fault transformer)
100 - 1200 ± 5 % of measurement range
Line-to-line voltages U
L12
, U
L23
, U
L31
15 - 130 V
130 - 1150 V
± 5 % of read value
± 1 % of measurement range
Line-to-N-line voltages U
L1N
, U
L2N
, U
L3N
10 - 75 V
75 - 700 V
± 5 % of read value
± 1 % of measurement range
Present average of line-to-line voltages U
avgD
15 - 130 V
130 - 1150 V
± 5 % of read value
± 1 % of measurement range
Present average of Line-to-N-line voltages U
avgY
10 - 75 V
75 - 700 V
± 5 % of read value
± 1 % of measurement range
Apparent power S
L1
, S
L2
, S
L3
13 - 8000 kVA ± 2 % of measurement range
± 2 % vom Messbereich
Total apparent power 13 - 24000 kVA ± 2 % of measurement range
Active power P
L1
, P
L2
, P
L3
-8000 - +8000 kW
± 2 % of apparent power (P. F. > 0.6)
Total active power -24000 - +24000 kW
± 2 % of apparent power (P. F. > 0,6)
Reactive power Q
L1
, Q
L2
, Q
L3
-6400 - +6400 kVar ± 4 % of apparent power
Total reactive power -20000 - +20000 kVar ± 4 % of apparent power
Power factors cos
L1
, cos 
L2
, cos 
L3
,
-0,6 - 1 - +0.6
-0.6 - 1 - +0,6
± 0.04
± 0,04
Power factor total -0.6 - 1 - +0.6
-0,6 - 1 - +0,6
± 0.04
± 0,04
Long term average of currents I
L1
, I
L2
, I
L3
30 - 8000 A ± 1 % of measurement range
Long term average of 3-phase current 30 - 8000 A ± 1 % of measurement range
Long term average of active power in L
1
, L
2
, L
3
13 - 8000 kW ± 2 % of apparent power (P. F. > 0.6)
Long term average of active power 3-phase 13 - 8000 kW ± 2 % of measurement range
Long term average of apparent power in L
1
, L
2
, L
3
13 - 8000 kVA ± 2 % of measurement range
Long term average of apparent power 3-phase 13 - 8000 kVA ± 2 % of measurement range
Long term average of reactive power 3-phase -8000 - +8000 kVar ± 4 % of apparent power
Energy consumed 1 - 10000 MWh ± 2 %
Energy delivered 1 - 10000 MWh ± 2 %
Reactive energy consumed 1 - 10000 MVarh ± 2 %
Reactive energy delivered 1 - 10000 MVarh ± 2 %
Frequency 15 - 40 Hz
40 - 70 Hz
70 - 440 Hz
± 0.1 Hz
± 0,1 Hz
Distortion factor of current and voltage 2 - 100 %
± 2 % of measurement range up to 29
th
harmonic
Phase unbalance of current and voltage
2)
2 - 150 % ± 1 % of displayed value
1)
The given measured value tolerances are valid for one year based on an average operating temperature of 25 °C. After this period, deviations may occur.
The given tolerances for measured values for which the measured voltage is consumed when being determined are only valid if the voltage measurement
is carried out with an accuracy of 0.5
%.
2)
ANSI definition: Ratio of the largest difference between the phases and the average of all 3 phases.