Seaward Power Clamp - Manual (Page 19)

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Step 4. If it displays “L2”, then BUZZER will be sound for twice.
Please switch the Red test lead to connect to the
supposed phase Line 2 immediately before the “ L2 ” is
disappeared.
Step 5. When “L2” is disappeared, it will display the testing
result.
a. If it displays “ 1 2 3 “, then the phase sequence is forward
sequence, which means the supposed phase Line 1 is ahead
of the supposed phase Line 2.
b. If it displays “ 3 2 1 ”, then the phase sequence is reversed
sequence, which means the supposed phase Line 2 is ahead
of the supposed phase Line 1.
c. Display “－－－－“ means it is unable to judge.
d. If displays “LoU”, it is possible that you remove the test
leads before completing the whole testing procedures.
Step 6 : To repeat the test, using the Navigator key to choose
the "
" mode again.
OHM Measurment