User's Manual

1550C/1555
Users Manual
32
Short circuit current > 1 mA and < 2 mA
Principle of Measurement and Resistance
The Tester measures insulation parameters and displays the results using with
the following formulas.
Ohm’s
Law
Capacitance
(charge)
PI
(Polarization Index)
DAR
(Dielectric
absorption ratio)
I
V
R =
V
Q
C =
min1
min10
×
×
=
R
R
PI
sR
R
DAR
30
min1
×
×
=