VFD for the motor

[davidqyuan]

I have some questions about the VFD, does anyone here could help? thanks.
1. Is power factor (input side of VFD) in VFD's name plate? if it is, I just wonder if the motor's PF is different with VFD's PF, which one should be used to calculate P and Q in the VFD's input side?
2. does VFD produce/absorb the Var to/from the system?

thanks again

David

 

[jraef]

Please don't cross post.


"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> faq731-376