Ht-instruments HT7052 Manual de usuario descargar pdf (Pagina 21)

HT7052

EN - 19

6.5 INSULATION RESISTANCE MEASUREMENT

6.5.1 Setting of parameters

1. Switch on the instrument by pressing the ON/OFF key

2. Select with arrow keys  or  the item “INSULATION RESISTANCE” on main menu

and confirm with SELECT key. The screen of Fig. 16 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. 17

Fig. 16: Initial numerical screen Fig. 17: Initial graphical screen

3. Press again the SELECT key to enter in the setup parameters section. The screen of

Fig. 18 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. 18). The time duration of graphical function is

correspondent to the value of set Timer

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. 19)

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

Timer Duration of the measurement

Timer ON/OFF ON: timer activated, OFF timer disabled

Time 1 Time to accept and display first Rmin and Rmax results

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 3: Setting of internal parameters

CAUTION

Timer and Time1 are independent timers. Maximum time for each of them is

30 min 60s

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 119 120

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Ht-instruments HT7052 Manual de usuario Pagina 21