HT instruments HT9022 - Manual (Page 28)

HT9022
EN - 26
5.4.2.2.1. Key F4 “Fnz” in AC+DC current measurement
While measuring Current, press key F4 (Fnz) to open the drop-
down menu shown on the screen to the side. At each
subsequent pressure of key F4, the cursor will scroll through the
available items, as follows:
• Max: it constantly displays the maximum RMS value of
current;
• Min: it constantly displays the minimum RMS value of
current;
Mod Par OK Fnz
A C 5 0 . 0 H z
1 0 0 . 0 A
19/01-17:00:00
• Cr+: it constantly displays the maximum positive crest value;
• Cr-: it constantly displays the minimum negative crest value;
• Zero: it zeroes the average value of the measured current;
• Rst: it deletes all stored Max, Min, Cr+ and Cr- values;
• Esc
: it goes back to a normal measuring mode.
WARNING
Note: carry out current zeroing before clamping the conductor.
By pressing key F3 (OK), the selected item is confirmed.
To the side, an example of measurement with active Max
function. The display shows the active function.
Mod Par Fnz
M a x A C 5 0 . 0 H z
1 0 0 . 0 A
19/01-17:00:00
5.4.2.3. Current harmonics
The screen shows an example of Current Harmonics
measurement.
By pressing keys F1 (◄) or F3 (►), it is possible to move the
cursor over the graph and to select the harmonic to be
measured.
It is possible to measure up to the 25 th harmonic, for
fundamental frequencies between 10Hz and 75Hz, and up to the
8
th harmonic for fundamental frequencies between 75Hz and
400Hz.
◄
Par
► Fnz
H 0 1 1 0 0 . 0 A
T h d I 1 0 . 0 %
19/01-17:00:00
5.4.2.3.1. Key F4 “Fnz” in Current Harmonics measurement
While measuring Current Harmonics, press key F4 (Fnz) to
open the drop-down menu shown on the screen to the side. At
each subsequent pressure of key F4, the cursor will scroll
through the available items, as follows:
• Max: it constantly displays the maximum RMS value of the
selected current harmonic;
• Min: it constantly displays the minimum RMS value of the
selected current harmonic;
• Abs: it displays the value of the harmonics in Amperes;
◄
Par OK Fnz
H 0 1 1 0 0 . 0 A
T h d I 1 0 . 0 %
19/01-17:00:00
Max
Min
Abs
%
Rst
Esc
Max
Min
Cr+
Cr-
Zero
Rst
Esc