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The
-LED (LV-indication) only serves as a
indication for hazardous voltage and not as
measurement value.
With non pushed buttons this voltage detector
may not permit to clearly indicate the absence of
operating voltage in case of interference voltage
because of its relatively high internal impedance.
When the indication “voltage present” appears
on a part that is expected to be disconnected of
the installation, it is recommended to repeat the
test with pushed buttons with load, that there is
no operating voltage on the part to be tested.
With determination of phase conductors and
phase sequence the perceptibility of the display
may be impaired, e.g. when using insulating
protective gears, in unfavourable locations, for
example on wooden ladders or insulating floor
coverings, as well as with unfavourable lighting
conditions and in an improperly earthed AC
voltage system.
The voltage tester may only be dismantled by
authorised personnel.
Before using the device check the housing and
connecting line for visible damage. If damages
are visible the voltage tester may not be placed into
operation. In case of strong dirt contamination, the
tester must be cleaned before use.
The tester has to be stored in a clean and dry
environment.
During longer load tests the connection line
warms up. Neither bend or wind the connecting
line during the test procedure nor knot and hang
the line around your neck. Load tests may only be
performed up to 230 V rated voltage.
An interruption for cooling is neccessary when
performing several load tests in a sequence.
3. Putting into operation
The Prüfball is ready for operation when the protec-
tive caps have been removed.
After the device has been used, attach the protective
caps to prevent injuries and discharge of the battery
when connecting both electrodes.
3.1 Testing display and function (self-test)
In accordance with EN 50110-1 voltage testers must
be checked if they function correctly, briefly before
and whenever possible after the use, for determi-
ning absence of voltage.
Check the function at a known voltage source
(AC and DC). The voltage value is indicated on the
display by bar graph and value. The LV-indication
(red LED) lights up at voltages of more than
50 V AC / 120 V DC.
Attention!
If one of the displays fails during the self-test, even
if only partial failure occurs, the voltage tester may
not be placed into operation!
The Prüfball may be used as voltage tester when
testing 3.1 was successful.
