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When a PM8000 or ION9000 is configured for a delta system, the phasor colors don't match between the current and voltage. That is, Vbc is blue and Vca is green, but Ib is green and Ic is blue. The text here is correct, but when a customer glances at the phasor diagram, it appears incorrect. Is there some way to reconfigure these colors (and voltage order, ideally)?
I am aware that there is no current on the image below--I'm only concerned with the order and color.
Thanks!
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The colors and display sequence are not user configurable on the Phasor Diagram display screen.
The rational for the sequence and coloring is that the "DELTA" volts-mode uses the "Two-Element (Two-Stator) Watt-meter" method. This uses Blondel's theorem to compute total power on a 3 wire system.
The two stator/elements in DETLA volts mode are the dot product of these vectors:
1. Vab ● Ia
2. Vcb ● Ic
(where vector Vcb = -Vbc)
Link copied. Please paste this link to share this article on your social media post.
The colors and display sequence are not user configurable on the Phasor Diagram display screen.
The rational for the sequence and coloring is that the "DELTA" volts-mode uses the "Two-Element (Two-Stator) Watt-meter" method. This uses Blondel's theorem to compute total power on a 3 wire system.
The two stator/elements in DETLA volts mode are the dot product of these vectors:
1. Vab ● Ia
2. Vcb ● Ic
(where vector Vcb = -Vbc)
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