HT7
EN - 9
4.7. 1-WIRE AC VOLTAGE DETECTION (POLARITY)
CAUTION
The maximum input for AC voltage is 690V. Do not measure higher
voltages to avoid risks of electrical shocks or serious damages to the
instrument.
The 1-wire AC voltage mode should be used as a quick voltage
detection test with no voltage value displaying.
symbol is lighted up whenever the voltage between the probes
exceeds 50V, even if the batteries are low or have been removed.
Fig. 5: 1-wire AC voltage detection
1. Perform the preliminary Autotest (see § 4.3).
2. Connect the L2 probe to the object under
test (see Fig. 5). The measurement is
performed only when probe is in contact
to live conductors.
3. The instrument turns automatically on along
with LEDs and for AC voltage
detected from 100V to 690V, 50/60Hz. The
display and bargraph values are not
significant in this test.
4. The instrument turns automatically off as
soon as the measured voltage is lower than
100V AC.
5. While taking measurements in single-phase
installations, the symbols or can be
displayed. This is not a malfunction.
6. Press the key to switch on the white
LED illuminator to perform measurements in
dark environments.
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