HT instruments HT7052 - Manual (Page 24)

HT7052
EN - 22
6.6 DIAGNOSTIC TEST
6.6.1 Setting of parameters
1. Switch on the instrument by pressing the ON/OFF key
2. Select with arrow keys  or  the item “DIAGNOSTIC TEST” on main menu and
confirm with SELECT key. The screen of Fig. 25 is shown by the meter. In case of
activation of Graphic R(t) option press arrow keys  or  to select the graphical
screen of Fig. 26
Fig. 25: Initial numerical screen Fig. 26: Initial graphical screen
3. Press again the SELECT key to enter in the setup parameters section. The screen of
Fig. 27 is shown by the meter
4. Use the arrow keys  or  for the selection of parameters. The herewith Table 3
shows the meaning of the measurement parameters
5. Set the values by using the arrow keys  or . Press SELECT key to select possible
sub-parameters and repeat the settings
6. To activate the graphical screen the parameter Graph R(t) should be ON and the Timer
must be activated (see Fig. 27). The time duration of graphical function is
correspondent to the value of set Time3
7. The Timer value could be very long (up to 30 minutes), so the special automatic
decimation algorithm (LOG) is use to write the Graph R(t) at display (see Fig. 28)
8. The cursors of the Graph R(t) could be activated with  key at the end of
measurement. The cursors of the Graph R(t) could be moved with  or  keys
9. Press ESC key to save the settings and back to the measurement screen or the
START/STOP key to exit from the settings menu and activate the test
Parameter Description
Unominal Set test voltage – Range 500V 10kV step 25V
Time1 Time to take R1min result
Time2 Time to take R1min result and calculate DAR
Time3 Time to take R3min result and calculate PI
DD ON/OFF ON: DD enabled, OFF: DD disabled
Graph R(t) Enable/Disable Graph R(t)
R(t)
Set of minimum and maximum values of R(t) for graphical
screen
R(t) Type Set of “LIN” (linear) o “LOG” algorithm of graphical screen
Table 5: Setting of internal parameters
CAUTION
Time1  Time2  Time3 are timers with the same start point. The value of
each presents the duration from the start of the measurement. The maximum
time is 30 min