ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Happy Father's Day!
by Bill Addiss - 06/19/21 04:16 PM
A Risky Setup
by timmp - 06/18/21 08:08 PM
Where is Everyone?
by gfretwell - 06/18/21 11:07 AM
Conduit over Vinyl Siding
by Jim M - 06/16/21 08:30 PM
Updated Forum Software
by Admin - 06/15/21 10:23 AM
New in the Gallery:
2020 - 2021 Winter Project
2020 - 2021 Winter Project
by Bill Addiss, April 29
Garden 2021
Garden 2021
by Bill Addiss, April 26
Who's Online Now
0 members (), 6 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#51241 04/26/05 03:10 PM
Joined: Mar 2001
Posts: 2
E
Junior Member
I have just visited a small wood processing plant that has been losing fixed capicator banks over the last few years. I was not involved in sizing or installing, but there power factor was 83% before and 91% know, there is alot of vfd drives in this plant, any thoughts on this just to help me with my own feeling about the problem. Thanks

Joined: Feb 2002
Posts: 182
B
Bob Offline
Member
VF drives and capacitors do not go together.
The dirves create harmonics and cause capacitor damage. You can install a harmonic filter that is composed of a reactor and capacitor.It must be tuned to the harmonic frequency to be effective. Suggest you get an engineer involved that is knowledgable of
this type problem. You can order the filters
complete after you determine the proper size.
Edit: Are the capacitors install to improve power factor to reduce utility demand charges?

[This message has been edited by Bob (edited 04-26-2005).]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
The_Lightman
The_Lightman
Orlando, Fl, USA
Posts: 49
Joined: August 2001
Top Posters(30 Days)
Trumpy 10
Admin 10
Popular Topics(Views)
280,435 Are you busy
213,508 Re: Forum
200,398 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5