Rms Voltage Measurement On 3 Phases - AEMC PowerPad 3945 User Manual

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The measurement type is selected using one of the six variable function but-
tons. All of these measurements are valid in 3U, 3V, 3A, L1, L2 and L3.
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The waveforms are selected by pressing the
- 3U displays the three phase-phase voltages of a three-phase system
- 3V displays the three voltages of a three-phase system
- 3A displays the three phase currents of a three phase-3 wire system
The neutral current is not a direct measurement, but the resulting total
of the 3 currents measured.
- L1, L2 or L3 displays the current and voltage, on phase one, two or three,
respectively.
IMPORTANT NOTE: The choice of waveforms to be displayed, in any display
mode, depends on the type of connection (see § 4.1.5).
• Single-phase: No choice (L1)
• Two-phase: 2V, 3A, L1, L2

5.1.2 RMS Voltage Measurement on 3 Phases

59.99Hz
300V
0
- 300
<t= 5.0ms V1= +2783
RMS
34
• Three phase-3 wire: 3U, 3V, 3A, L1, L2, L3
• Three phase-4 wire: 3U, 3V, 4A, L1, L2, L3
207.6 v
1
THD CF
Figure 5-2
buttons:
07/25/02
204.4 v
2
V2= -144 V3= -147
max
min
Power Quality Analyzer Model 3945
10:26 100%
204.9 v
3
3U
3V
3A
L1
L2
L3
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