3.9 Selecting the Wiring Mode
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Chapter 3 Measurement Preparations
Wiring Mode 7. 3-phase, 3-wire (3P3W3M) + single-phase, 2-wire (1P2W)
Wiring Mode 8. 3-phase, 4-wire (3P4W) + single-phase, 2-wire (1P2W)
Wiring Description
1P2W Single-phase, 2-wire
Select this wiring mode when measuring DC lines.
1P3W Single-phase, 3-wire
－
3P3W2M 3-phase, 3-wire
This wiring mode is used for 2-meter measurement to measure 3-phase
delta lines with two channels. It allows accurate measurement of active
power, even with unbalanced and distorted waveforms. Apparent power,
reactive power, and power factor values for unbalanced lines may differ
from values obtained with other instruments. In that case, use the
3P3W3M wiring mode.
3P3W3M 3-phase, 3-wire
This wiring mode is used for 3-meter measurement to measure 3-phase
delta lines with three channels.
3P4W 3-phase, 4-wire
This wiring mode is used for 3-meter measurement to measure 3-phase
Y (star) lines with three channels.
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