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NEPTUNE
EN - 16
4. In conditions of correct voltage and frequency, the instrument shows message
“
HOLD
”
,
symbols and
“
PH1
”
and the buzzer sounds continuously, waiting for a stable voltage
value on phase L1 to be detected (see Fig. 12
–
left side).
Fig. 12: Detecting phase L1 and waiting for phase L2
5.
Do not remove the lead from phase L1
until message
“
PH 2
”
appears flashing on the
display (see Fig. 12
–
right side)
Fig. 13: Detecting phase L1 and waiting for phase L2
6. Position the red lead onto phase
L2
of the three-phase system to be tested (see Fig.
10). In case passage between phase L1 and phase L2 takes more than
10s
, the
instrument shows message
“
t.out
”
on the display (see Fig. 13
–
left side). In conditions
of correct voltage and frequency, the instrument shows message
“
HOLD
”
, symbols
and
“
PH2
”
and the buzzer sounds continuously, waiting for a stable voltage value on
phase L2 to be detected (see Fig. 13
–
right side).
7. Upon detection of a stable voltage value on phase L2, the instrument automatically
shows message
“
1.2.3.
”
(test OK) or message
“
2.1.3
”
(test NOT OK) as shown in Fig.
14
Fig. 14: Results of phase sequence and phase concordance test
8. In case it is necessary to check phase concordance between two parallel three-phase
systems, after detection of phase L1 of the first system, position the lead on phase L1
of the second system. The correct final result is message
“
1.1-
”
(see Fig. 14
–
right side)
Содержание F3000U
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