×
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

Power cables testing

Power cables testing

Power cables testing

(OP)
I have a 5 kV & 15KV new power cable sets to porform HiPot testing and may question is if 2(nominal voltage) + 1 is enough for insulation test on each cable.

Thank you for any support about that.

RE: Power cables testing

MV Cable testing is a specialized feild, if you dont know I highly recommend you hire a certified testing company. DC hipot can be a destructive test on MV cables, you want to do a AC VLF test or better yet a Tan Delta or PD test for initial baseline data for future condition assesment.

 

RE: Power cables testing

Zogzog is almost right, I would add sheath test for sure.
We are talking about completly NEW cables - Tan delta is not predicative in this case. We can expect strict cable manufacturer test in the factory, if the sheath test is ok we can expect good insulation and only mounting faults (joints, terminations)possible. Then the best is PD testing. For those who rely on withstand testing is AC or VLF test suitable too - but ONLY as an additional test to PD+sheath testing!Remember this kind of test can be destructive, probably will give you no result if done after successful PD+sheath test. The situation is slightly different with in operation or very old cables.    

RE: Power cables testing

Look up NETA-ATS (Acceptance Test Specifications).

RE: Power cables testing

Quote:

We are talking about completly NEW cables - Tan delta is not predicative in this case.

Agreed, but you can establish some good baseline data for future assesment.

For PD testing, these guys are very good, Don is well known in North America as a PD guru.

www.NoOutageElectricalTesting.com

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