Hioki 3285-20, Instruction Manual, Page: 18 / 85

xiii ___________________________________________________
Operating Precautions
___________________________________________________
CAUTION
Removable sleeves are attached to the metal pins
at the ends of the test leads.
To prevent a short circuit accident, be sure to use
the test leads with the sleeves attached when
performing measurements in the CAT III
measurement category. In a CATII environment, if
the tips of the test leads do not reach the
measurement object, remove the rigid insulating
sleeve before measuring.
For details on measurement categories, see
“
Measurement categories
”
(page vi) in the
instruction manual.
When performing measurements with the sleeves
attached, be careful to avoid damaging the
sleeves. If the sleeves are inadvertently removed
during measurement, be especially careful in
handling the test leads to avoid electric shock.
To prevent an electric shock accident, confirm that
the white or red portion (insulation layer) inside the
cable is not exposed. If a color inside the cable is
exposed, do not use the cable.