Measurement Computing WavePort 312P rev.1.0 - Manual (Page 53)

PowerVista/312 User’s Manual Phaser Diagram 5-5
5.3.4 Demand Tabulation
The Demand Tabulation Window is labeled to be self-descriptive. Several items are discussed here to help
define any unclear labeling.
• T,A: stands for Total or Average. For voltages and currents, average values are presented on this line,
and for power, three phase totals are supplied.
• Phase: when noting 12, 23, or 31 means that a delta or open delta connection has been specified. Even
though the label states phase 12 (for phase1 to phase2 line-to-line voltage), phase 1 current is being
displayed.
• Imbalance: calculations determine the maximum deviation from the average and determine a percent
based on average.
• RMS Results: are calculated point-by-point on wave and include all harmonic energy.
• Fundamental Phasors: are calculated via a single frequency Fourier Multiplication and contain only
fundamental energy.
• Harmonic Phasors: are calculated via a single frequency Fourier Multiplication and contain only that
single harmonic energy.
• Sequence Phasors: are calculated by applying the sequence transformation to the phase voltages and
currents.