Power Factor Reality Check

Discussion in 'General Electronics Chat' started by DYLH, Nov 22, 2013.

  1. DYLH

    Thread Starter New Member

    Aug 13, 2013
    28
    1
    two loads:
    100 VA w/ 0.9 PF
    100 VA w/ 0.8 PF
    Total Load is 200 VA with 0.85 PF, correct?

    Another case:
    250 VA w/ 0.75 PF = 187.5 W
    150 VA w/ 0.90 PF = 135 W
    Total load is 400 VA, 322.5 W, PF = 322.5/400 = 0.80625
     
  2. donpetru

    Active Member

    Nov 14, 2008
    186
    25
    Both results above are correct.
     
    DYLH likes this.
  3. DYLH

    Thread Starter New Member

    Aug 13, 2013
    28
    1
    Thanks, donpetru

    Any other members want to confirm, please?
     
  4. DYLH

    Thread Starter New Member

    Aug 13, 2013
    28
    1
  5. WBahn

    Moderator

    Mar 31, 2012
    17,748
    4,796
    You can't just add apparent powers. You've already been told this in another thread.

    You also need to indicate whether the power factors are leading or lagging.
     
    DYLH likes this.
  6. DYLH

    Thread Starter New Member

    Aug 13, 2013
    28
    1
  7. WBahn

    Moderator

    Mar 31, 2012
    17,748
    4,796
    Oh. Okay. They probably could have been kept in a single thread -- but no biggie one way or the other.
     
Loading...