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UMG 103-CBM
57
13.2 Measuring accuracy
The measuring accuracy of the UMG103-CBM
applies to the use of the following measuring
ranges. The measured value must be within the
specified limits. Outside these limits, the measur-
ing accuracy is not specified.
The specification is valid under the following
conditions:
- Annual recalibration,
- A preheating time of 10 minutes,
- An ambient temperature of 18-28 °C.
If the device is operated outside the range of 18-
28 °C, an additional measuring error of ±0.01%
of the measured value per °C deviation must be
taken into account.
Function
Symbol
Accuracy class
Measuring range
Total active power
P
0.5 (IEC61557-12)
0 W .. 12.6 kW
Total reactive power
QA, Qv
1 (IEC61557-12)
0 var .. 16.6 kvar
Total apparent power
SA, Sv
0.5 (IEC61557-12)
0 VA .. 12.6 kVA
Total active energy
Ea
0.5
(IEC61557-12)
0.5S
(IEC62053-22)
0 Wh .. 999 GWh
Total reactive energy
ErA, ErV
1 (IEC61557-12)
0 varh .. 999 Gvarh
Total apparent energy
EapA, EapV 0.5
(IEC61557-12)
0 VAh .. 999 GVAh
Frequency
f
0.05 (IEC61557-12)
45 Hz .. 65 Hz
Phase current
I
0.2 (IEC61557-12)
0 Arms .. 6 Arms
Neutral conductor current calculated
INc
1.0 (IEC61557-12)
0.03 A .. 25 A
Voltage
U L-N
0.2 (IEC61557-12)
10 Vrms .. 600 Vrms
Voltage
U L-L
0.2 (IEC61557-12)
18 Vrms .. 1000 Vrms
Power factor
PFA, PFV
0.5 (IEC61557-12)
0.00 .. 1.00
Voltage harmonics
Uh
Cl. 1 (IEC61000-4-7)
1 .. 40
THD of voltage
1)
THDu
1.0 (IEC61557-12)
0% .. 999%
THD of voltage
2)
THD-Ru
-
-
Current harmonics
Ih
Cl. 1 (IEC61000-4-7)
1 .. 40
THD of current
1)
THDi
1.0 (IEC61557-12)
0% .. 999%
THD of current
2)
THD-Ri
-
-
1) Referenced to the fundamental oscillation.
2) Referenced to the effective value.
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