MPI-525
– USER MANUAL
31
3.6 Measurement of insulation resistance
WARNING:
The object tested must not be live.
Presence of any voltage across tested object is prohibited.
3.6.1 Double-lead measurement
Set the rotary switch of function selection at
R
ISO
position.
Press
F1
U
N
push-but-
ton and move to selection
of nominal test voltage U
N
.
Press
F2
TIME
push-but-
ton and move to selection of
t
1
, t
2
and t
3
periods.
The “---“ value means that
the period counting is disa-
bled.
Select an appropriate item by means of
and
push-buttons
and confirm by pressing
ENTER
.
Change the calculated absorption coeffi-
cients, if needed (point 2.2.2).
Make sure that t
1
, t
2
and t
3
periods have the
proper values.
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