Ok here I go again.
I think I got it but need more help..
Using the following givens;
255Kw load
PF .7
V=4160
60Hz
I get the following results:
To correct PF to unity
39mf caps
current in the caps 62a
To .9 PF
21mf caps
current 33a in caps
To .8 PF
11mf caps
current 16 in caps
This should be right, but I need the help in going backwards. If I correct from .7 to .8 and use a 11 mf cap, how do I calculate the change when the load goes from .7 to .75?
I got something wrong in my sheet and can't figure this one out...
I plan on using switching units, but still want to know how to figure it out...
Thanks..
Dnk....
