HT instruments M70 - Manual (Page 8)

M70
EN - 7
4.3. : AC VOLTAGE MEASUREMENT
CAUTION
The maximum input voltage is 550+10%V. Don’t try to measure higher
voltages to avoid risks of electrical shocks or serious damages to the
instrument.
Fig. 3: Connection of the instrument’s terminals during test
1. Turn on the instrument
2. Press the arrow keys to select
3. Insert the black and red cables in the corresponding input terminals of the instrument
4. If necessary, insert the croco clips on the test probes
5. Connect the cables to the desired points of the circuit under test as shown in Fig. 3.
The voltage value will be displayed
6. Example of display of AC voltage value AC voltage value
4.3.1. Anomalous cases which may occur during measurements
1. The maximum input voltage is
550+10%V.
If the detected voltage value exceeds
605V RMS the instrument displays the
screen beside.
Disconnect immediately the instrument
from the circuit under test to avoid
electrical shocks and damages to the
instrument