×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

high current bus bar

high current bus bar

high current bus bar

(OP)
Dear all,
I have to design a 9500A, 7.2kV bus bar. There is an existing 7500 bus bar but I think that I have no possibility to upgrade it to 9500A. From the ABB switchgear manual I found out that U shaped aluminium conductors arranged face-to face are the most suitable for the job - the existing bus bar also use the same sollution. The problem is that I cannot find a supplier for the U section aluminium bars. Maybe someone can indicate a supplier from Europe - preferred ?!
Thanks!

RE: high current bus bar

You might want to review the publication 'Copper for Busbars' by the CDA before embarking on this project.

http://www.copperinfo.co.uk/busbars/pub22-copper-for-busbars/

Aluminium channel is readily available in many different cross-sections. I refuse to believe that you can't find a supplier of non-ferrous metal sections anywhere in Europe. Have you even tried? If the reason you can't find a supplier is because you are looking for some exotic shape or size then you have two choices: pay for an extrusion die to have the custom section made for you, or work with what is available.
  

----------------------------------
  
If we learn from our mistakes I'm getting a great education!
 

RE: high current bus bar

Hi Pafi

Try this link however I would point out two things:-

Testing of your busbar arrangement would need to be carried out:- short circuit testing,temperature rise, power frequency tests on any parts insulated,impulse testing etc. Also you would need to satisfy yourself that the Aluminium Alloy used is the correct grade for what you require in terms of strength and conductivity.

the link:- http://www.kellysearch.co.uk/qz-product-4210.html

desertfox

RE: high current bus bar

(OP)
Thank you both for the answers. I am aware about the requirements for thermical and mechanical stress for bus bars.
ScottyUK: I tried to find the U section (shape) as for DIN 46424 - mentioned in ABB manual - and unfortunately I failed. For other shapes - rectangular, round bars - there is no problem. But the mechanical construction of bus bar for 10kA and aluminium quantity for rectangular shape is much more complicated/ bigger than with this 'U' shape. We had here in Romania one producer - for such extruded shapes - but unfortunately now he doesn't produce such things anymore and in my research on the Internet I only found profiles for mechanical constructions (doors, windows, cooling profiles for electronic, etc.)
I shall try to use the link provided by desertfox.
best regards,
Pafi

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources