Warning – Amprobe ACD-55HPQ Clamp-Meter User Manual
Page 22
ACD-55HPQ
6. After about one second “MEASURING“ appears on the display indicating that the
instrument is ready to execute the first measurement.
7. Press the FUNC key, the “MEASURING” message will disappear.
8. Disconnect the test lead. The symbol “
2
PH
” appears on the secondary display. The
instrument is now ready to perform the second measurement.
9. Connect the test lead to L2 phase conductor (see Fig. 12, 2
nd
2
nd
measurement).
10. When an input voltage greater than 80V is detected the buzzer sounds and the
symbols “
PH
” is shown on the main display. Don’t press any key and keep the test
lead connected to L2 phase cable.
WARNING
If the input voltage value is less to 80V instrument doesn’t show “
PH
”
symbol and it’s not possible to execute the phase rotation detection.
11. After about one second “MEASURING“ appears on the display indicating that the
instrument is ready to execute the second measurement.
12. Press the
FUNC key, the instrument will turn OFF the “MEASURING” symbol.
WARNING
If you Wait more than 10 seconds between the first
FUNC key press and
the second, the instrument will display the “
SEC
” message and it’s
necessary to repeat all the measurements from the beginning. Rotate the
selector to any position to escape the function and restart at step 1.
13. If the two tested phases follow the correct sequence, the instrument displays “
1.2.3.
”,
otherwise it shows “
2.1.3
.” indicating an incorrect phase sequence.
WARNING
• The detected voltage is NOT the phase to neutral voltage, but the
voltage between the conductor and the operator who is holding the
instrument. This value can be lower than the phase to neutral voltage.
DON’T TOUCH THE PHASE CABLE IF YOU AREN’T SURE THAT
ANY VOLTAGE IS PRESENT.
• If the operator is insulated from the ground (e.g. insulated floors, shoes
with rubber souls, etc.) the instrument may not measure correctly. We
recommend repeating the test at least twice to assure the accuracy of
the obtained result.
EN - 18