User Manual

The menu system
Figure 29: Three-phase, three-wire (3 Wattmeter method). Select 3 phase, 4 wire
Figure 30: Three-phase, four-wire (3 Wattmeter method). Select 3 phase, 4 wire
Depending on the wiring configuration, not a ll groups will be available. For
examp
le, if wiring is 1p2w for each channel, then the four channels will
correspond to the four groups. If the wiring is 1p3w for group A, then Channels 1
and 2 will be in-group A. This leaves Channels 2 and 3 for a maximum of groups
B and C. Group D cannot exist in this condition.
Group A wiring takes priority, followed b y groups B, C, and then D. For example,
starting from a 1p2w configuration for all groups, if group A is set to 1p3w, then
group D cannot be set to anything and therefore group C will be 1p2w only.
Group B will have the choice of 1p2w, 1p3w and 3p3w.
Line-to-Line measurements are only valid when the signal frequency is less than
1 kHz. They are only valid in the 1p3w, 3p3w, and 3p4w wiring configurations.
Line-to-neutral measurements are only valid in the 3p3w and the 3p3w (3V3A)
wiring configurations. The neutral current (AN) values in the math formulas is the
phase 3 line c urrent when in the 3p3w wiring configuration.
PA3000 Power Analyzer User Manual 49