484 Rockwell Automation Publication 1426-UM001J-EN-P - August 2019
Appendix I EN 61000-4-30 Metering and Aggregation
Measurements can be made in accordance to EN 61000-4-30 requirements on
AC 50 Hz or 60 Hz power systems in any metering mode that is supported by the
power monitor. Line-to-neutral voltage measurements are only reported in Wye,
Split-phase, and Delta hi-leg metering modes.
Data Flagging
Data flagging is performed to avoid unreliable measurements being produced
during a metering interval in which a voltage dip, swell, or interruption occurs
and to avoid counting an event in multiple categories as a result. Data flagging
applies to individual basic metering intervals as well as to intervals into which the
flagged basic interval is aggregated. Data flagging is used in the reporting of
results in EN 50160 conformance tracking, Appendix
H.
Power Quality Parameters
The following sections summarize the measurement, accuracy, and time
aggregation of each power quality parameter addressed by the standard. Accuracy
is expressed as ‘measurement uncertainty’ in the standard.
Measurement uncertainty is specified over a measuring range that is expressed as a
function of U
din
, the declared input voltage, and in the presence of influence
quantities that can vary within a specified range. The power monitor has a U
din
of 690V rms line-to line. Table 236
lists the influence quantities and their
permitted ranges.
4.4 Measurement aggregation intervals S
4.6 Real-time-clock uncertainty A w/external sync, S with
internal RTC
4.7 Flagging Yes
6.1 Transient influence quantities Yes
Table 235 - EN 61000-4-30 Class Designations (M8 model only) (continued)
61000-4-30 Section Power Quality
Parameter
Power Monitor 5000 Class Designation Remarks
Metering Aggregation
Table 236 - Influence Quantity Range
(1)
(2)
Section and Parameter Class Influence Quantity Range
5.1 Frequency A 42.5…57.5 Hz, 51…69 Hz
S 42.5…57.5 Hz, 51…69 Hz
B 42.5…57.5 Hz, 51…69 Hz
5.2 Magnitude of the supply A 10…200 % U
din
S 10…150 % U
din
B 10…150 % U
din
5.3 Flicker A 0…20 P
st
S 0…10 P
st
B Not applicable
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