www.janitza.com 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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