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2. Safety Precautions
The Prüfball SPB has been approved by VDE test
authorities for application of the VDE GS-symbol.
When used for its intended purpose, the safety of
the operator, as well as that of the instrument, is
assured.
In order to maintain flawless technical safety con-
ditions, and to assure safe use, it is imperative that
you read these operating instructions thoroughly
and carefully before placing your instrument
into service, and that you follow all instructions
contained therein.
Observe the following safety precautions:
The voltages indicated on the Prüfball are
rated voltages. The voltage tester may only be
used in systems working within these rated
voltage ranges.
Faultless indication of display values is only
guaranteed between -15° and +45°C.
Hold the instrument by the handgears only, to
avoid covering the display and not touching the
test electrodes.
The maximum on-period is 120 seconds.
Only qualified persons may carry out work with
these device. The user needs to be farmiliar with
the risks for measuring voltage and compliance
with safety regulations and the proper use of the
voltage detector.
Workings may only be performed with appropri-
ate personal protective equipment.
Observe the minimum object distance to other
plant components that are energized or earthed
and use personal protective equipment as speci-
fied by national accident prevention regulations
(in Germany: DGUV 3 or DIN EN 50110-1).
The function of the voltage tester must be
checked briefly before and whenever possible
after the use. Carry out the function test. If the
indication of one or several systems fails in the
course of checking, the instrument must not be
used again.
The red
-LED only serves as an 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 display shows “voltage present” on a
part that applies as separated from the
installation, it is recommended to repeat the test
while pressing the push buttons (additional load).
With determination of phase conductors 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.
