View source

== Power calculation ==

{| {{border}}
! Quantity !! Unit !! Name
|-
| P        || W    || Active power
|-
| Q        || var  || Reactive power
|-
| S        || VA   || Apparent power
|}

[[Image:PQS.svg|300px]]

== Power quadrants ==

[[Image:PowerQuadrant.svg|400px]]

{| {{border}}
! Quadrant !! Phase angle<br/>&phi; !! Current relative to voltage
|-
| I        || 0 to 90°              || Lagging
|-
| II       || 90 to 180°            || Lagging
|-
| III      || -180 to -90°          || Leading
|-
| IV       || -90 to 0°             || Leading
|}

{| {{border}}
| +P       || Import Active Power
|-
| &minus;P || Export Active Power
|-
| +Q       || Import Reactive Power
|-
| &minus;Q || Export Reactive Power
|}

== Contributor ==
* [[User:Joakim|Joakim Ögren]]

[[Category:Information]]