User Manual

41
Figure 53: The 3U RMS display screen
7.1.2. THE 3V RMS DISPLAY SCREEN
This screen displays the three phase-to-neutral voltages of a three-phase system.
RMS phase-to-phase voltages.
Voltage axis with automatic scaling.
Instantaneous value cursor. Use the
 or  key to move the cursor.
Instantaneous values of the signals
at the position of the cursor.
t: time relative to the start of the
period.
U1: instantaneous phase-to-phase
voltage between phases 1 and 2
(U
12
).
U2: instantaneous phase-to-phase
voltage between phases 2 and 3
(U
23
).
U3: instantaneous phase-to-phase
voltage between phases 3 and 1
(U
31
).
7.1.1. THE 3U RMS DISPLAY SCREEN
This screen displays the three phase-to-neutral voltages of a three-phase system.
Voltage axis with automatic scaling.
RMS voltages.
Instantaneous value cursor. Use the
 or  key to move the cursor.
Instantaneous values of the signals
at the position of the cursor.
t: time relative to the start of the
period.
V1: instantaneous phase-to-neutral
voltage of curve 1.
V2: instantaneous phase-to-neutral
voltage of curve 2.
V3: instantaneous phase-to-neutral
voltage of curve 3.
Figure 54: The 3V RMS display screen
7.1.3. THE 4A RMS DISPLAY SCREEN
This screen displays the three phase currents and the neutral current of a three-phase system.
Current axis with automatic scaling.
Instantaneous value cursor. Use the
 or  key to move the cursor.
RMS currents.
Instantaneous values of the signals
at the intersection of the cursor and
of the curves.
t: time relative to the start of the
period.
A1: instantaneous current of phase 1.
A2: instantaneous current of phase 2.
A3: instantaneous current of phase 3.
AN: instantaneous value of the neu-
tral current.
Figure 55: The 4A RMS display screen