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7.3.3. 4A CF DISPLAY SCREEN
This screen displays the current waveforms of one period and the peak factors.
Peak factor for each graph.
Current axis with automatic
Instantaneous value cursor. Use
the or button to move the
NOTE: L1, L2, L3 and N display the current and voltage peak factors for phases 1, 2 and 3, respectively and the neutral
channel.
7.4. MAX - MIN AND MEAN VOLTAGE AND CURRENT
The
sub-menu displays the one-second mean and half-cycle maximum and minimum RMS voltage and current and the
instantaneous positive and negative peak voltage and current.
NOTE: The MAX and MIN RMS measurements are calculated every half cycle (i.e. every 10 ms for a 50-Hz signal). The
measurements are refreshed every 250 ms.
The RMS measurements are calculated over one second.
7.4.1. 3U MAX-MIN DISPLAY SCREEN
This screen displays the one-second mean and half-cycle maximum and minimum RMS values and the positive and negative
phase-to-phase voltage peaks.
Figure 7-12
scaling.
cursor.
Columns of values for each graph (1, 2, and 3).
MAX: maximum RMS phase-to-phase voltage since the instrument was turned ON or
since the last time the button was pressed.
RMS: true RMS phase-to-phase voltage.
MIN: minimum RMS phase-to-phase voltage since the instrument was turned ON or
since the last time the button was pressed.
PK+: maximum (positive) peak phase-to-phase voltage since the instrument was
turned ON or since the last time the button was pressed.
PK-: minimum (negative) peak phase-to-phase voltage since the instrument was
turned ON or since the last time the button was pressed.
Figure 7-11
58
Instantaneous values of the signals at
the position of the cursor.
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 current
of the neutral.
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