Sonel MPI-540 Brief User Manual

MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
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5.5 LIVE mode of the network
The recorder allows the user to preview network parameters in real time (LIVE mode). The icons of
available views are displayed in the main recorder menu, in the bottom part:
view of waveforms of currents and voltages
timeplot view,
view of the table of measurements ,
view of the phasor diagram,
view of harmonics.
Screen refreshing in the LIVE mode can be temporarily blocked using the HOLD function.
 To pause refreshing, select the button on the top bar (the colour of the icon changes to
red).
 To resume screen refreshing, select the icon again (the colour of the icon will change to
black).
5.5.1 Transient waveforms of current and voltages (waveforms)
After the icon has been selected, the view of waveforms of currents and voltages is displayed.
They show two periods of network waveforms for active channels (depending on the measurement
configuration).
Use labels on the right side of the window to switch on and off individual measuring channels (at
least one waveform must be always visible). Each label includes the name of the channel (for exam-
ple. "U L1") and its effective value.
5.5.2 Timeplot of effective values
After the icon has been selected, the view of timeplot is displayed. This view displays a graph of
the effective values of voltages and currents in time. The whole window covers time of approx. 110
seconds. After filling the entire window, the chart moves to the left by 30 seconds.
5.5.3 "Live" mode - tabular view
After the icon has been selected a summary table with the values of network parameters is dis-
played. The table is refreshed in real time.
The next lines were determined as follows:
L1 ............................... phase values L1,
L2 ............................... phase values L2,
L3 ............................... phase values L3,
N ................................. voltage values of the current channel I
N,
L1-2 ............................ phase-to-phase values L1-L2,
L2-3 ............................ phase-to-phase values L2-L3,
L3-1 ............................ phase-to-phase values L3-L1,
Σ ................................. total values.
The next column show the values of individual parameters:
U [V] ........................... RMS voltage,
U
h01
[V] ....................... RMS of the fundamental voltage component,
U
DC
[V] ....................... voltage constant component,

Sonel MPI-540 Specifications

General

Brand	Sonel
Model	MPI-540
Category	Measuring Instruments
Language	English