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4.1.5 Electrical Hookup (electrical network)
• Highlight ELECTRICAL HOOKUP with the
button. The following screen will appear:
• Choose the hookup type with the
• Press the
button to apply the new hookup selection. The Confi guration menu
will once again be displayed on the screen.
Hookup Types:
Single or two-phase: The neutral current is not measured or calculated.
3 phase - 3 wire:
- DELTA network: Only power totals are representative of the actual situation.
- WYE network: The neutral current is not calculated. It is necessary to
connect neutral to obtain representative power levels per phase.
3 phase -4 wire: The neutral current is available and its value and wave-
form are displayed.
V1 must be connected in all hookups, since the display is synchro-
nized from V1 and the network frequency measured by V1.
Synchronization of the Display in "Waveform" mode:
Power Quality Analyzer Model 3945
N
L1
Single-phase
N
L1
L2
L3
3 phase-3 wire
(DELTA)
Display selection
(vertical right menu)
3U
3V
4A / 3A
L1
L2
L3
07/25/02 10:26
N
L1
L2
Two-phase
N
L1
L2
L3
3 phase-4 wire
(WYE)
Figure 4-3
and
buttons.
Reference channel
for synchronization
buttons, then press the
100%
U1
V1
A1
V1
V2
V3
27
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