Measurement-computing WavePort 312P rev.1.0 Manuel d'utilisateur télécharger pdf (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.

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 81 82

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Measurement-computing WavePort 312P rev.1.0 Manuel d'utilisateur Page 53