Amprobe ACD-51HP Power-Quality-Clamp-Ons - Manual (Page 26)

ACD-51HP - ACD-56HPQ
4.3.10. Detection of phase sequence
WARNING
The maximum Voltage input is 600V. Do not attempt to take any voltage
measurements exceeding the limits indicated in this manual. Exceeding the
limits could cause electrical shock or damage to the instrument.
L1
L2
L3
N
1
2
L1
L2
L3
N
1
2
Fig. 14: phase rotation detection Fig. 15: phase rotation detection with rubber cup
1. Select the “
” position.
2. Insert the red lead into V/ Ω jack.
3. The symbol “ 1
PH ” will appear on the secondary display. The instrument is ready to
perform the first measurement.
4. Connect the red terminal to the L1 phase conductor (see Fig. 14, 1 st measurement). If
necessary use the rubber test lead holster and insert the red test lead (see Fig. 15, 1 st
measurement).
WARNING
During this measurement:
• The instrument must be held in the operator’s hand.
• The test lead cable must not be in contact with or near to any voltage
source that, due to instrument sensitivity, can abort the measurement.
5. When an input voltage greater than 80V is detected the buzzer sounds and the symbol
“ PH ” is shown on the main display. Don’t press any key and keep the test lead
connected to L1 phase cable.
WARNING
If the input voltage value is less to 80V the instrument doesn’t show “ PH ”
symbol and it’s not possible to execute the phase rotation detection.
EN - 22