Sonel P-4 - Countdown; Determining the Phase

P-4 ● P-5 ● P-6 – USER MANUAL
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3.9.2 Countdown
 After the synchronization and disconnecting
from the reference point, the tester starts to
count the time, which indicates the reducing
probability of correct determination of the
phase – from 20 to 0 s.
 If the user does not connect the tester to the
next point within this time, the tester turns off.
3.9.3 Determining the phase
Phase determination point
 Within 20 sec.
(countdown time)
move the tester to
test point.
 Connect the tester
(any connection of
probes is allowed) to
the tested point.
 The meter enters the
countdown mode
(sec. 3.9.2).
Description of mes-
sages:
Phase compliant with
the reference phase
(the phase shift <60)
The phase is ahead of
the reference phase
Phase delayed in rela-
tion to the reference
phase
If the tester is disconnected from the volt-
age before the end of synchronization:
 symbol is displayed,
 a sound signal is activated (for 2 sec-
onds).