In commercial institutions, the accident prevention regulations of the Employer’s Lia-
bility Insurance Association for Electrical Systems and Operating Materials are to be
observed.
In schools, training centres, computer and self-help workshops, handling of measur-
ing instruments must be supervised by trained personnel in a responsible manner.
The voltage between the measuring instrument connection points and earth must
never exceed 600 V DC/AC in CAT III.
The test prods have to be removed from the measured object every time the mea-
suring range is changed.
Be especially careful when dealing with voltages higher than 25V AC or 35 V DC.
Even at such voltages you can receive a life-threatening electric shock when you
come into contact with electric wires.
Check the measuring device and its measuring lines for damage before each mea-
surement. Never carry out any measurements if the protecting insulation is defec-
tive (torn, ripped off etc.)
To avoid an electric shock, make sure not to touch the connections/measuring
points to be measured neither directly nor indirectly during measurement. During
measuring, do not grip beyond the touchable grip range markings present on the
test prods and the clamp meter sensor.
Do not use the meter immediately prior to, during or just after an electrical storm
(electrical shock risk! / high-energy overvoltages!). Please make sure that your
hands, your shoes, your clothing, the floor, switches and switching components are
dry.
Avoid an operation near:
- strong magnetic or electromagnetic fields
- transmitter aerials or HF generators,
Since this could affect the measurement.
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