Ht-instruments HT7052 Bedienungsanleitung PDF herunterladen (Seite 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

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Ht-instruments HT7052 Bedienungsanleitung Seite 24