Amprobe ACD-51HP Power-Quality-Clamp-Ons - Manual (Page 29)

ACD-51HP - ACD-56HPQ
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” symbol 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 the second cable (see Fig. 14, 2 nd measurement or Fig. 15, 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 its not possible to execute the phase rotation detection.
11. After about one second “MEASURING“ appears indicating the instrument is ready to
execute the second measurement.
12. Press the FUNC key, the “MEASURING” symbol disappears.
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 test cables belong to the same phase, the instrument displays “
1.1.-. ”,
otherwise it displays “ 2.1.3 .” or “ 1.2.3 .” This indicates that the two cables belong to
two different phases.
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 test at least twice due to verify the rightness of the
obtained result.
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