Three-Phase Phasor Visualizer
This is an interactive three-phase voltage and current phasor diagram tool. You set magnitudes and angles and see the resulting phasor diagram, which helps in understanding balanced and unbalanced conditions and relay quantities. It is built for study and teaching.
Who it is for
Protection engineers, students, and trainers who want to build intuition about phasor relationships.
Inputs and outputs
- Inputs: per-phase voltage and current magnitudes and angles.
- Outputs: a live phasor diagram.
Typical use cases
- Teaching phasor concepts.
- Visualizing unbalance and phase relationships.
- Supporting directional and sequence intuition.
What it does not do
This is an educational visualizer, not a relay settings or fault calculation tool. It does not replace manufacturer software, applicable standards, or engineering judgment.
Privacy: This tool runs entirely in your browser. Anything you enter is processed locally on your computer and is not uploaded to a server.
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Frequently asked questions
- What is a phasor diagram?
- A phasor diagram represents sinusoidal voltages and currents as vectors, showing their magnitudes and the phase angles between them.
- What can I adjust?
- You can set the per-phase voltage and current magnitudes and angles, and the diagram updates to show the resulting phasors.
- Does it show unbalanced systems?
- Yes. By changing magnitudes and angles you can visualize both balanced and unbalanced three-phase conditions.
- Is this a calculation or settings tool?
- No. It is an educational visualizer, not a relay settings or fault calculation tool.
- Is data uploaded?
- No. The tool runs entirely in your browser and nothing is uploaded to a server.
- Who is it for?
- Protection engineers, students, and trainers who want to visualize phasor relationships and relay quantities.