HT Instruments HT10 Bedienungsanleitung Seite 33

5.5. 1-WIRE AC VOLTAGE DETECTION (POLARITY)
•
The maximum input for AC voltage is 1000V. Do not
try to measure higher voltages to avoid risk of
electrical shocks or serious damages to the instrument
•
The 1-wire AC voltage mode should be used as a quick
test in order to detect the presence of voltage only
without displaying any result. The pole test is not
suitable to determine voltage. For this purpose, the
two-pole voltage testing is always mandatory
•
When using single-pole phase tests to determine
external conductors the display function may be
impaired under certain conditions (e.g. for insulating
body, protective equipment on insulation locations,
etc..
•
Warning LED turns ON and the buzzer sound for
voltage between probes over 100V
1. Perform the preliminary Autotest function (see § 5.1)
2. Connect the L2 probes to the object under test (see Fig. 7). The
measurement is performed only with contact of probe directly
on the metal part of conductor
3. The LED and the "- - -"indication switch on, and an acoustic
signal is emitted for voltage present >100V AC
4. The instrument turns automatically OFF as soon as probes are
disconnected from the object under test
5. Press the H/ key to activate/deactivate the HOLD function at
display. Press
activate/deactivate the display backlight
6. Press the / key to activate/deactivate the white LED torch
33
CAUTION
and hold the H/
HT10
key in order to