Sonel WMGBMPI525 User Manual page 33

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