The length of the lines in the phasor diagram represent the relative magnitude of the voltages with respect to the other phase voltages, and the currents with respect to the other phase currents. All angles are measured with respect to the Va/V1 phase. The Va/V1 phasor is fixed to the right-hand horizontal axis (positive x-axis). Positive angles are measured counterclockwise.
Measured values are provided for the magnitude and relative angle for each voltage and current phase.
Delta vector diagrams can be configured to display two different ways:
Instrument (voltage vectors appear 60 degrees apart - showing the actual voltage and current values that the meter is measuring).
System (voltage vectors appear 120 degrees apart - showing true system operation including any calculated values).
Phasor information can be used to troubleshoot incorrect connections on the meter’s voltage and current inputs (for example, switched phase wiring or polarity errors), if you know how the phasors should be oriented for your power system.
Phasor information can be viewed using ION Setup, meter webpages, or the display.