HT instruments SIRIUS87 - Manual (Page 17)

SIRIUS 87
EN - 15
4.2. M : INSULATION RESISTANCE MEASUREMENT
The measurement is performed according to IEC/EN61557-2 and VDE 0413 part 1.
CAUTION
Before effecting the insulation test make sure that the circuit under test is not
energized and all the relative loads are disconnected.
Turn the
switch on M  position.
Switch on the instrument.
The key
FUNC permits to select one of the following measuring modes
(which can be shown cyclically when pressing the key):
 Mode MAN (minimum test time of 10 seconds or set by the pressing
duration on the
START/STOP key). Recommended test.
 Mode TIMER (test duration depending on the selected interval (from 10
to 999 seconds). This test can be effected in case a minimum measuring
time is required.
FUNC