90
UMG 806
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16.2 Performance characteristics of functions
Function
Symbol
Accuracy class
Display range
Norm
Voltage
U
0.2
0-999.9 kV
IEC61557-12
Current
I
0.2
0-99,99 kA
IEC61557-12
Active power
P
0.5
0-9999 MW
IEC61557-12
Reactive power
Q
0.5
0-9999 Mvar
IEC61557-12
Apparent power
S
0.5
0-9999 MVA
IEC61557-12
Power factor
PF
0.5
0-1.000
IEC61557-12
Frequency
F
±0.01 Hz
45.00 Hz-65.00 Hz
IEC61557-12
Active energy
EP
0.5 s
0-99999999 MWh
IEC62053-22
Reactive energy
EQ
2
0-99999999 Mvarh
IEC62053-23
Harmonic ratio of voltage
THDu
1 (50 Hz)
5 (60 Hz)
0-99.99 %
IEC61557-12
Harmonic ratio of current
THDi
0-99.9 9%
IEC61557-12
Sub-harmonic voltage component
THDu
0-99.99 %
IEC61557-12
Sub-harmonic current component
THDi
0-99.99 %
IEC61557-12
Voltage unbalance
Uunb
0.5
--
IEC61557-12
Current unbalance
Iunb
0.5
--
IEC61557-12
Phase sequence of the mains voltage
--
0.5
--
IEC61557-12
Phase position of the mains voltage /
mains current
--
±0.1°
IEC61557-12
Phase sequence of the mains current
--
0.5
--
IEC61557-12
Extreme value
--
0.5
--
IEC61557-12
Consumption
--
0.5
--
IEC61557-12
Temperature
T
±2° C
--
--
Note:
The following applies to current transformers with an open design or Rogowski coils:
·Current accuracy 0.5
·Power accuracy 1.0
·Active energy class 2
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