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!

*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.

Jobs

what is the spring's function in CT measure?

what is the spring's function in CT measure?

(OP)
Hiall
When maintenance transmission system from generator to SF6 Breaker (20kv). i detected on transmission line from SF6 to Transformer have two spring which connect from CT to phase line (1 touch, 1 don't touch). Near location have electrical discharge from phase line (phase line coated by insulation paint) to spring (don't touch) to. I don't know spring's function in CT measure. I have picture show it. Many thanks

RE: what is the spring's function in CT measure?

Springs to my knowledge have no function in measuring. With that said they shouldn't be touching the cable either. Now, as to what and how they got there, I am just as puzzled as you.

RE: what is the spring's function in CT measure?

I guess that the spring is there to equalize the voltage and prevent arcing and radio interference if you had a bare conductor going through the CT window. What I have seen is a pigtail soldered to metalizing on the inside of the porcelain tube that is connected to bare conductors.

RE: what is the spring's function in CT measure?

Release of static charge on surface.

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close