Amprobe ACD-50NAV ACD-51NAV ACDC-52NAV ACD-53NAV ACD-54NAV Navigator-Clamps - Manual (Page 20)

14
Phase Rotation
Line 3
Line 2
Line 1
Note :
• Connect three phase of power source as shown above.
• The test is only available while the system frequency is stable.
Step 1. Set the rotary switch to the “W” position.
Step 2. Using the Navigator key to choose the “
“ mode
Step 3. Connect the Red test lead and Black test lead to any of the
line conductor (e.g. Red test lead to the phase Line 1, and Black test
lead phase Line 3).
Note: If the followings occur, the meter will not be able to
determine the line phase:
The screen displays “OLU” and blinking: voltage > 1000V
The screen displays “LoU” and blinking: voltage < 30V
The screen displays “outF” and blinking: frequency > 65Hz or < 45Hz
Step 4. When the BUZZER beeps twice, change one of the test lead
to another line conductor within 3 seconds
The screen will display the result as below:
a) If it displays “ 1 2 3 “, then the phase sequence is forward
sequence
b) If it displays “ 3 2 1 ”, then the phase sequence is reversed
sequence