×
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

Trefoil Cable Configuration Question

Trefoil Cable Configuration Question

Trefoil Cable Configuration Question

(OP)
We are building a 34.5 KV collection system for a windfarm, and almost all the 3-phase cable is configured in trefoil.  Occasionally, the installers make a mistake and in the middle of a circuit, one cable will jump through the other two.  For example, you might have 1000' where the orientation is A-B-C as you look at a cross-section of the 3 cables, and then C accidentally passes between A and B and now you have the next 1000' with a cross-section of A-C-B.

Question - Does this create a problem?  EG. - Will the current-carrying capability of these cables be diminished?

FEinTX

RE: Trefoil Cable Configuration Question

It's probably a good thing.  Helps balance out any asymmetry in the mutual inductance.

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