AD Instruments
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©Copyright Abacanto Digital SA.
22
Manual de usuario AD511
Measurement Operation
Below section explains how to make measurements.
D.
Measuring Voltages
Figure 4. Voltages Measurement
Caution
l
Special care should be taken whne measuring high voltage.
Warning
l
To avoid harms to you or damages to the Meter, please do not attempt to measure voltages higher than 1000V DC or 750V AC, although readings
may be obtained.
To measure voltages, set up the Meter as Figure 4 and do the following:
5.
Press
DCV
or
ACV
button to select DC voltage or AC voltage measurement
6.
Insert the red test lead into the
V
terminal and the black test lead into the
COM
terminal.
7.
Connect the red and black alligator clip to the circuit to be measured.
8.
During measurement, when the red test lead is negative voltage, then “
-
“ shows on the display.
Note
l
When voltage measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads
away from the input terminals of the Meter.
E.
Measuring Insulation Resistance
Figure 5. Insulation Resistance Measurement
Caution
l
When performing insulation resistance tests, remove all power from the circuit to be measured and discharge all the power.
l
Do not short circuit two test leads under high voltage status.
l
Do not measure insulation resistance after high voltage output.
l
Do not measure over 10 seconds when:
100V measure resistance lower than 500k
W
250V measure resistance lower than 1M
W
500V measure resistance lower than 2M
W
1000V measure resistance lower than 5M
W
l
When the measurement is completed, don’t touch the circuit as the circuit has alre
ady stored capacitance which may cause electric shock.
