KBR multimess D9-PQ
20144 EDEBD
A0228-5023-1_EN
81
9. Intended use
The product is intended for measuring and evaluating voltage and current
signals in the energy grid only.
10. Measurement data – measurement
methods multimess D9-PQ
The aggregation of the measurement values is carried out in accordance with
the IEC61000-4-30 (2008) standard for class A devices.
RMS values of the voltages and currents, min. / max. values
U eff / I eff
The interval value of the voltage or current is the mean of the RMS values of the
length of the selected interval.
U min / max; I min / max
Per measurement period, the highest and lowest 10 ms voltage or current RMS
value is saved in addition to the average.
Ripple control signal
U Ripple Control (200 ms)
In the multimess D9-PQ setup any interharmonic can be set. This is displayed
as the 200 ms maximum value within a measurement interval.
Flicker LevelsP
st
/ P
lt
The Short term flicker levels P
st
(10 min) and Long term flicker levels P
lt
(2 h)
are calculated for the star and delta voltages. P
st
and P
lt
are defined in
EN 61000-4-15: 2010.
The source for implementation recommendations is „EMV Messung von
Spannungsschwankungen und Flickern mit dem IEC-Flickermeter“ by
W.Mombauer, VDE-Verlag, VDE-Schriftenreihe „Normen verständlich“,
ISBN 3-8007-2525-8.
The interval length P
st
has been fixed to 10 minutes and is independent
of the measurement interval set.
Formula for Plt calculation:
P
P
lt
st i
i
=
=
∑
1
12
3
1
12
3
,
The flickermeter can be parameterised in the device setup for the following grid
configura-tions:
230V/50Hz; 230V/60Hz and 120V/50Hz; 120V/60Hz
Measurement data – measurement methods