Ac Voltage Measurement - HT HT7 Bedienungsanleitung

5.2.

AC VOLTAGE MEASUREMENT

 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.

exceeds 50V, even if the batteries are low or have been removed.
1. Perform the preliminary Autotest (see § 4.3)
2. Connect the L1 and L2 probes to the object under test (see Fig. 3). The measurement
is performed only when probes are in contact to live conductors.
3. The instrument turns automatically on and the measured AC voltage value is displayed
both in numerical and bargraph modes. AC symbol is displayed. Always keep the
instrument in vertical position for an optimal display reading.
4. The symbol
50/60Hz.
5. The instrument turns automatically off as soon as the probes are disconnected from the
object under test. If the measured voltage is lower than 3.0V AC the instrument turns
automatically off.
6. While taking measurements in single-phase installations, the symbols
displayed. This is not a malfunction.
7. Press the key to switch on the white LED illuminator to perform measurements in
dark environments.
symbol is lighted up whenever the voltage between the probes
Fig. 3: AC Voltage measurement
is lighted up for AC voltage measurements from 100V to 690V,
CAUTION
EN - 7
HT7
or can be