9
Attention :
Please ensure that the test electrodes (probe
tips) make good contact with two phases of a
three-phase mains while testing the phase
rotation. For absolute determination of a clock-
wise phase rotation it is necessary to make a
negative phase rotation test after changing the
phases. The indication “
B
” or “
C
” can be
affected by unfavorable light conditions, by
protective clothing or in insulated locations.
Firmly grasp the insulated grip of the Tester
probe L2, it
is better for the sensitivity of the
phase rotation test.
8. RCD Voltage Test
Voltage Test with RCD Trip Test
During voltage tests in systems equipped with
RCD circuit breakers, a RCD switch can be
tripped at a nominal residual current of 10mA
or 30mA by measuring the voltage between L
and PE.
These Testers IVT-10 / IVT-20 are equipped
with an internal load enabling the tripping of
an RCD protection device of 10mA or 30mA.
