VOLTCRAFT CT-3 Bedienungsanleitung Seite 33

In schools, training centres, computer and self-help workshops, handling of mea-
suring instruments must be supervised by trained personnel in a responsible man-
ner.
Before measuring voltages, always make sure that the measuring instrument is not
set to a measuring range for currents.
The voltage between the measuring instrument and earth must never exceed 600 V
DC/AC in excess voltage category III.
The test prods have to be removed from the measured object every time the mea-
suring range is changed.
Take particular care when dealing with voltages exceeding 25 V AC or 35 V DC!
Even at voltages as low as these, there is a danger of fatal electric shock if you
touch electric conductors.
Prior to each measurement, check your instrument and its measuring leads for
damage. Never carry out measurements when the protective insulation is damaged
(ripped, torn off etc.).
In order to avoid an electric shock, ensure that you do not touch the connections to
be measured, even indirectly, during measurements. When during measuring, do
not grip beyond the grip range markings present on the test prods.
Do not use the multimeter just before, during or just after an electrical storm (electri-
cal shock / high-energy overvoltages). Please make certain that your hands, shoes,
clothing, the floor, the measuring instrument, the measurement lines switches and
switching parts, etc., are dry.
Avoid operation in the immediate vicinity of:
- strong magnetic or electromagnetic fields
- transmitting aerials or HF generators.
These could lead to an incorrect measurement being carried out.
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