Major tech MT575 Buku Petunjuk - Halaman 14
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Halaman Cetak3. 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.
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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