MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
At this point, you may define:
Mains system. By selecting the icon from drop-down list or the network name, you can select
the following types:
1-phase,
Split-phase,
3-phase 4-wire – systems with neutral wire, e.g. star with N,
3-phase 3-wire – systems without neutral wire – star without N and delta,
3-phase 3-wire Aron – as standard 3-wire system, but with the current measurement using
two clamps (I
1
i I
3
). The third current (I
2
) is determined by calculating from the relation
I
2
= - I
1
- I
3
.
Frequency – mains nominal frequency. The following positions are available: 50 Hz, 60 Hz.
Nominal voltage. The following settings are available: 58/100, 64/110, 110/190, 115/200,
120/208, 127/220, 133/230, 220/380, 230/400, 240/415, 254/440, 290/500, 400/690 V
Period time - specifies the time of averaging recorded parameters and also the time between
successive recorded data on a memory card (except events). The following settings are available:
1 s, 3 s, 10 s, 30 s, 1 min, 10 min, 15 min, 30 min.
Clamps type – here you can enable or disable the measurement of currents and determine the
type of clamps. If the current measurement is required, indicate clamps to be used from the fol-
lowing list:
No – clamps not applied,
F-x – flexible clamps (Rogowski coil) with a nominal range of 3000 A AC,
C-4 – clamps CT (with core) with a range of 1000 A AC,
C-5 – clamps with a Hall sensor with a range of 1000 A AC/DC,
C-6 – clamps CT (with core) with a range of 10 A AC,
C-7 – clamps CT (with core) with a range of 100 A AC.
5.4 Analyzer settings
On the Analyzer settings screen it is possible to:
specify the manner of clamps fastening,
change the phase identification,
view files stored in the recorder mode.
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