PEAKMETER PM5205, Manual

Page: 21 / 29

Insulation Tester
19
DAR & PI
Sometimes an insulation part with obvious drawbacks (e.g., the insulation part is broken through under high voltage) is
nevertheless with a good absorption ratio (or polarization index). Therefore, absorption ratio (polarization index) cannot
be used to discover local insulation drawbacks other than dampness and contamination.
R10Min= Resistance value measured 10 minutes after applying the test voltage; R1Min=R60Sec= Resistance value
measured 10 minutes after applying the test voltage; R15Sec= Resistance value measured 10 minutes after applying the
test voltage
After performed insulation test,press SELECT button to view DAR or PI .If DAR or PI Value invalid, the meter display - -
- - .
Making Basic Measurements
Measuring DC Voltage
Switch rotary switch to
V
position,Input terminals and test leads connecting as follows figure ,then connect test leads
DAR
（
absorbing ratio
）
=
Sec R
Sec R
15
60
PI(
polarization index
) =
Min R
Min R
1
10