1. Application
The Prüfball ZAP 350 is a two-pole voltage tester
with connectible load resistor that is integrated in
the connection line, LCD indicator, a high-quality
moving-iron instrument and LED display.
You can use the Prüfball ZAP to measure d.c. and a.c.
voltages in the rated voltage ranges mentioned on
the type plate, determine polarity, as well as phase,
phase sequence and continuity.
Furthermore you can determine a electrical circuit
load of 350 W (for example for the start of electric
meters).
The casing is made of solid rubber and protects the
internal measuring system against heavy shocks,
water and dust.
Thanks to its high degree of protection (IP65) the
Prüfball SPB may even be used in rain.
2. Safety Precautions
The Prüfball ZAP voltage tester 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
conditions, and to assure safe use, it is impera-
tive that you read these operating instructions
thoroughly and carefully before placing your
instrument into service, and that you follow all
instructions contained therein.
The instrument provides excellent electrical safety
with the two series resistors immediately down-
stream from each of the test electrodes.
The Prüfball SPB voltage tester has been approved
by VDE test authorities for application of the VDE
GS-symbol.
Observe the following safety precautions:
The voltages indicated on the Prüfball SPB
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 -10° and +55°C.
Hold the instrument by the handles only, to
avoid covering the display and not touching
the test electrodes before and during tests.
Just before they are used, voltage testers
need to be checked to ensure they function
correctly. Carry out the function test and
check the instrument at a known voltage
source - e.g. a 230 V socket. If indication of
one or several systems fails in the course of
checking, the instrument must not be used
again.
The maximum on-time of the Prüfball SPB
is 30 seconds.
unfavourable lighting conditions and in an
improperly, grounded a.c. voltage system.
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