Uploaded June 2026 | Updated September 2026, 3 weeks ago

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This video provides a short technical introduction to phasor - or vector - diagrams and how they are used in measuring, analyzing, and troubleshooting three phase power applications.

Power Analyzers from Rohde & Schwarz: rohde-schwarz.com/in/products/test-and-measurement/power-analyzers_254849.html

Three phase power analysis on MXO series oscilloscopes: rohde-schwarz.com/us/products/test-and-measurement/general-analysis/3-phase-power-analysis-oscilloscope-software_334331.html

LMG Series Precision Power Analyzers Playlist: youtube.com/watch?v=-suWSsM8gmQ&list=PLKxVoO5jUTlvPX9bjuHOsWJH0qjdqnPJd

Test and Measurement Fundamentals Playlist: youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8

Timeline:
00:00 Introduction
00:15 Suggested viewing
00:35 Displaying voltage and current in three phase systems
01:21 Overview of phasor diagrams
02:23 Phasor diagrams on test and measurement instruments
02:58 Checking measurement setup
03:47 Phasor rotation and reference point
04:33 Reference angle (zero degree point)
04:55 Example: connection troubleshooting
05:32 Example: balanced three phase system (inductive load)
06:27 Example: system with current imbalance
07:15 Summary