×
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

ANAF or ONAN transformers

ANAF or ONAN transformers

ANAF or ONAN transformers

(OP)
Two questions:-

1. I have only ever come across ANAF transformers fitted indoors. Are they ever used outdoors, particularly if it is a high ambient temperature environment?

2. What is the approximate ratio in size difference between a ANAF and ONAN 8MVA transformer?

RE: ANAF or ONAN transformers

1.  I have seen them used outdoors in a 3-phase 1.5 MVA application, this was in Africa. The temp was aproximatly 90 degrees F. The units were produced by Crompton Greaves I believe.

2. The 1.5 ANAF unit was a 3 phase cast coil design with fans on the frame that circulated air through the coils.  They were very compact units, I'm not sure if anyone produces a cast coils ANAF unit at 8MVA.  There is a chinese company that makes cast coil units in larger sizes, I can't recall the company name, but the model line is SCB10 Resin Dry Type Transformers.  If you google that, there are a lot of results to review.  The 1.5MVA cast coil units I have dealt with weres about 30% smaller than the equivlant oil insulayted unit.  I hope this helps.

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