 ##  [Per-Unit System](/unit-system) 

  ##  [Per-Unit System](https://engineering.quantumdictionary.io/unit-system-0) 

  
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**Engineering &amp; Applied Technologies Dictionary**

 
Definition

A normalized electrical‑network representation that expresses voltages, currents, impedances, powers and related quantities as dimensionless fractions of chosen base values (base power, base voltage, and derived bases), so that component values and network equations become scale‑consistent and easier to compare and compute.