Major tech MT575 Інструкція з експлуатації - Сторінка 14

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3. Press the ▲ "up button" or the ▼ "down button to find the

4. Press the ENTER/SAVE button to inquire whether to clear

Note: if the erasing unit needs not to be done, press ESC/

button to skip it and return back to the minor function

selection.

5. Press the ENTER/SAVE button again to clear up the data;

6. Press the ESC/

7.1.5. Introduction of other Functions:

1. Dielectric absorption ratio (DAR):

2. Polarization index (PI):

Lower insulation resistance tested takes a longer test time,

which would deteriorate the object under test. Thus, higher

DAR or PI (as close to 1) would create better insulation

grade of the object under test.

measurement time setting; LCD displays the following

picture respectively;

up the data or not; LCD displays the picture shown in

below:

LCD displays the picture shown in below:

then return back to the minor function selection.

page.

Ratio of insulation resistance between 1-min and 30-sec

1-min insulation resistance

DAR :

30-sec insulation resistance

Ratio of insulation resistance between 10-min and 1-min

10-min insulation resistance

PI :

1-min insulation resistance

button again to return back to the main