Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Line conditioner for "dirty" power

Posted on 2008-09-30
3
Medium Priority
?
631 Views
Last Modified: 2013-12-11
Customer gets lots of "dirty" power from power company but already has a dual conversion online UPS to protect them. Customer feels that this is not enough and has seen tv shows that have talked about something before the UPS in the electrical room (something about filtering harmonics) that have been placed in large business installations that is protection before it reaches the UPS. (not a generator)
Filtering harmonics may not be the right solution but I would like to start there.

I am hoping to hear from people that are electrical engineers (if possible) or have had extensive electrical work or have seen large installations where the above scenario has been used.

0
Comment
Question by:SPORTHAWKS
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 69

Expert Comment

by:Callandor
ID: 22623809
I think he's talking about EMI power filters: http://www.radiuspower.com/emi_filters.html

An online UPS generates power from its batteries, while recharging them from the wall outlet.  I don't understand why the customer would think that he is getting "dirty" power from the power company when it is being generated by his UPS.  If true, then the UPS is the source of the problem, if it is an online type.  In cases like this, it is best to separate facts from opinion, so I would try to find out if there really is noise in the power line, unless he just wants it installed for peace of mind.
0
 

Author Comment

by:SPORTHAWKS
ID: 22625782
Thanks for responding Callandor.

Forgive me since I am not an electrician but do you place the EMI power filter before the 3 phase UPS? And if so, what needs to go in and out of those connectors on the EMI filter unit?

2) Also I found a Passive Harmonic Filter from Dynaspede:

http://www.dynaspede.com/004_01_002.htm

Would you recommend the EMI filter or the one from the link above?




0
 
LVL 69

Accepted Solution

by:
Callandor earned 1000 total points
ID: 22626488
I'm not an electrician, but since you typically install these for the whole building, it would go before the UPS.  Three-phase power has three wires plus a ground, so those are the four connections.

I haven't installed these, so I can't comment on whether one brand is better than another.  You may want to wait for someone with actual experience to comment on this.
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
On September 18, Experts Exchange launched the first installment of the Help Bell, a new feature for Premium Members, Team Accounts, and Qualified Experts. The Help Bell will serve as an additional tool to help teams increase question visibility.
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question