18
6.
Insulation resistance
500
V
IMPORTANT
:
The insulation test is protected by a live circuit warning. Detection of a voltage over 50V will inhibit testing. This applies whether or not
the insulation test is locked on.
6.1
Making an INSULATION measurement
.1 Set the left hand rotary range knob to the
500
V
insulation test voltage required:
.2 Connect two test leads to the L1 (+ve ) and L2 (-ve) terminals on the instrument.
L1
L2
L3
N
E
.3 To start test, press and hold either of the TEST buttons,
or
, on the instrument.
Release the test button after the displayed reading has settled. Circuit will now discharge safely.
Note
: A 1000V warning is displayed whenever the 1000V range is selected for the first time and the TEST button is pressed.
6.2
Insulation test lock
To lock an insulation test ON, hold down either of the TEST buttons followed by either of the RED LOCK buttons.
Hold down the
TEST button
then press
the red
LOCK button
To release the “Locked on” insulation test, press the TEST button.
Warning: The test voltage will be permanently present on the test probes or crocodile clips when in the locked position.
Warning: Auto discharge - Auto discharge facility automatically and safely discharges the circuit at the completion of an insulation test.
Auto discharge cannot operate while the insulation test is locked on.
