Sonel P-4 - Phase Sequence Test

P-4 ● P-5 ● P-6 – USER MANUAL
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3.8 Phase sequence test
 Connect the probe tip:
 L1 to suspected phase L1,
 L2 to suspected phase L2.
 Firmly grip both probes L1 and
L2 (to achieve capacitive cou-
pling to the earth).
 The value of phase-to-phase
voltage is shown by:
 LED scale,
 display .
Signalling the phase sequence
by activating:
 indicator lights,
 icons on the display .
Description of indicator lights
clockwise sequence
[Right]
(phase L2 precedes L1)
counter-clockwise se-
quence [Left]
(phase L1 precedes L2)
 After switching the probes,
reversed symbol will be acti-
vated.
 The function is active only with efficient
batteries.
 The measurement may be performed us-
ing gloves - the third pole is capacitively
coupled to test probe L2 held by the user.
 Indicator LEDs and symbols L and R on
the display operate only during the meas-
urement of AC voltage, but the phase se-
quence may be determined only in three-
phase systems.