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To ensure safe operation and service of the Tester,
follow these instructions.
Failure to observe warnings can result in severe
injury or death.
The testers have been constructed and tested in
accordance with the safety regulations for voltage
testers and have left the factory in a safe and
perfect condition.
The operating instructions contain information
and References required for safe operation and
use of the tester. Before using the tester, read the
operating instructions carefully and follow them in
all respects.
Depending on the internal impedance of the
voltage detector there will be a different capability
of indicating the presence or absence of operating
voltage in case of the presence of interference
voltage.
A voltage detector of relatively low internal
impedance, compared to the reference value of
100 kΩ, will not indicate all interference voltages
having an original voltage value above the ELV
level. When in contact with the parts to be tested,
the voltage detector may discharge temporarily the
interference voltage to a level below the ELV, but it
will be back to the original value when the voltage
detector is removed.
When the indication "voltage present" does not ap-
pear, it is highly recommended installing earthing
equipment before work.
A voltage detector of relatively high internal impe-
dance, compared to the reference value of 100 kΩ,
may not permit to clearly indicate the absence of
operating voltage in case of presence of interferen-
ce voltage.
When the indication "voltage present" appears on
a part that is expected to be disconnected of the
installation, it is highly recommended confirming
by another means (e.g. use of an adequate voltage
detector, visual check of the disconnecting point of
the electric circuit, etc.) that there is no operating
voltage on the part to be tested and to conclude
that the voltage indicated by the voltage detector
is an interference voltage.
A voltage detector declaring two values of internal
impedance has passed a performance test of mana-
ging interference voltages and is (within technical
limits) able to distinguish operating voltage from
interference voltage and has a means to directly or
indirectly indicate which type of voltage is present.
Tester EV Basic
Batteries 1.5 V, IEC LR03
Manual
Safety Measures
15
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