×
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

Oil testing 46kv transformers

Oil testing 46kv transformers

Oil testing 46kv transformers

(OP)
How often should we test the oil in our 46kv oil filled transformers?  In the past we have always tested them annually.  Is that frequency really necessary?  Can we safely test the oil every 2nd or 3rd year?

RE: Oil testing 46kv transformers

What kind of oil testing are you doing?  If it is just DGA, that is typically done yearly and full screens done 3 - 5 year cycle depending on the transformer.
It is not alot work or expense to do a DGA for the value you receive.

RE: Oil testing 46kv transformers

I agree with wbd. I suppose you could "safely" test your oil every 3 years the same as you can "safely" see a doctor for a check up every 3 years, you find a problem after 3 years it may be too late.  

RE: Oil testing 46kv transformers

(OP)
Thanks for the help guys.   

RE: Oil testing 46kv transformers

Depends on how critical your transformer is. We were sampling a GSU transformer on a monthly basis at one stage after routine DGA picked up a small but hot fault. After a year or so we were happy that the fault was relatively stable; it has so far proven impossible to locate too. The gassing rate has remained steady for years but we were a little nervous when we first identifed the problem so we monitored it closely until we saw that it wasn't deteriorating.
  

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

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