janitza UMG 604-PRO, User Manual And Technical Data, Page: 74 / 87

UMG 604-PRO
www.janitza.de
69
16. 11 Measurement uncertainty
Measurement uncertainty on the device applies when using the following metering ranges.
The measured value must be within the specified limits. The measurement uncertainty is not
specified outside of these limits.
Measured value Measurement uncertainties
Voltage ± 0.2% per DIN EN 61557-12:2008
Current L ± 0.25% in accordance with DIN EN 61557-12:2008
Current N ± 1% per DIN EN 61557-12:2008
Power ± 0.4% per DIN EN 61557-12:2008
Harmonics U, I Class 1 DIN EN 61000-4-7
Active energy
Current transformer ../5 A
Class 0.5 (IEC61557-12)
Class 0.5S (IEC62053-22)
Current transformer ../1 A Class 1 (IEC61557-12)
Reactive energy
Current transformer ../5 A
Class 2 (DIN EN62053-23)
Current transformer ../1 A Class 2 (DIN EN62053-23)
Frequency ± 0.01 Hz
Internal clock ±1 minute/month (18 °C to 28 °C)
The specification applies under the following conditions:
• annual re-calibration,
• a warm-up time of 10 minutes,
• an ambient temperature of 18 to 28 °C.
If the device is operated outside the range of 18 to 28 °C, an additional measurement error of
±0.01% of the measured value per °C deviation must be considered.
NOTE
Note on saving measured values and configuration data:
Since the following measured values are saved in a non-volatile memory every 5 minutes,
the recording may
be interrupted for a
maximum of 5 minutes in case the operating voltage
fails:
• Comparator timer
• S0 counter statuses
• Min. / Max. / mean values
(without the date and time)
• Energy values
Configuration data is saved immediately.
A detailed Modbus address and parameter list can be found at www.janitza.com