15
4.2.Testing voltage an polarity
Attention!
The maximum allowable on-period for voltage
testing is 2 minutes.
Note!
Maybe that the voltage tester switches-on automati-
cally even when only one test probe is connected to
voltage or to a statically charged object. But this has
no significance.
Nominal voltage range 24 ... 1000 V
Securely contact the test probes with the test points.
The instrument switches-on automatically at a
voltage of at least 24 V. If the function „continuity
testing” had been activated, the device switches
automatically to „voltage testing”. The instrument
automatically selects the measuring range that
corresponds to the applied voltage (see Characte-
ristic Values) and indicates the voltage “V” on the
LC-display.
Attention!
The LV indication lights up at a voltage of at least
50 V / 120 V. A hazardous voltage is impressed.
Note!
The display of the LV indication (LEDs) even remains
in working order when the battery is empty or when
the device is not equipped with a battery. In case
only this measurement system is indicating, please
observe section 3.2.
Indicating polarity
The type of voltage is symbolized by the symbols ~
and -. Direct voltage: when minus is connected to
the test probe designated with „+” and with display
part, then the “-” leading sign appears.
When plus is connected, then no leading sign
appears left to the displayed value.
4. Measuring and testing
4.1. General information
The voltage tester switches-on automatically
when a voltage of at least 24 V is applied. In order
to extend battery life the instrument switches-off
automatically approximately 30 seconds after the
last measurement.
Voltages > 1220 V AC/DC
If a voltage of at least 1220 V AC/DC is applied, an
acoustic warning signal is generated and the display
value flashes. Alternating voltages of up to 1220 V
can be reliably measured. They are identified with
„~” left of the display value. Voltages with frequency
of more than 2 kHz are indicated by the flashing Hz
symbol. Direct voltage measurements of up to 1500
V can be performed reliably.
Voltages < 24 V
For voltages of less than 24 V the device must be
switched on or over with button .
