×
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

Zero sequence of HV UG cable

Zero sequence of HV UG cable

Zero sequence of HV UG cable

(OP)
Hi

I am looking at model a HV  transmission cable (three core cable). From the manufactrer specs, the following are specified

1. Postive Seq resistance and reactance /km
2. Zero Seq resistance and reactance /km

For positive seq I believe the impedance are given in per phase/conductor hwoever what about for zero sequence are these zero impedances are given in per phase/conductor or for all circuit.

Lastly how does a zero seq impedance test is performed on a UG cable.

Any useful info is greatly appreciated. Thanks.

RE: Zero sequence of HV UG cable

Sequence impedances are for the three phase circuit.   

RE: Zero sequence of HV UG cable

When you do a zero sequence test, you tie all the phase conductors together at each end and apply a single-phase source.  The sum of the currents in all three phases will be equal to 3 I0.  I suspect the Z0 that you want is on a per phase basis.
 

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