HT instruments HT9022 - Manual (Page 37)

HT9022
EN - 35
5.5.2.5. Voltage harmonics
The screen shows an example of Voltage 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 5 2 . 3 V
T h d V 2 . 4 %
19/01-17:00:00
5.5.2.6. 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 5 2 . 9 A
T h d I 1 0 . 7 %
19/01-17:00:00
5.5.2.6.1. Key F4 “Fnz” in Voltage and Current Harmonics measurement
While measuring Voltage or 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 or voltage harmonic;
• Min: it constantly displays the minimum RMS value of the
selected current or voltage harmonic;
• Abs: it displays the value of the harmonics in Amperes or
Volts;
◄
Par OK Fnz
H 0 1 1 0 0 . 0 A
T h d I 1 0 . 0 %
19/01-17:00:00
• %: it displays the value of the harmonics as percentage value with respect to the
fundamental;
• Rst: it deletes all stored Max and Min values;
• Esc : it goes back to a normal measuring mode.
Note: since the menu contains functions with a different meaning (Max-Min and Abs-%), it
is necessary to enter the menu twice: once for displaying Abs or % values and another
time to enable the Max or Min functions.
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.
◄
Par
► Fnz
H 0 1 1 0 0 . 0 A
T h d I 1 0 . 0 %
M a x
19/01-17:00:00
Max
Min
Abs
%
Rst
Esc