×
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 transformer with different frequency rating

Power transformer with different frequency rating

Power transformer with different frequency rating

(OP)
Can we use a power transformer 50 Hz on a 60 Hz network
Transformer primary voltage ( 26-30-34)kV, secondary voltage 0.4 kV.
Network voltage 36 kV, 60 Hz

RE: Power transformer with different frequency rating

The flux will be the same at 36 kV/60 Hz as it is at 30 kV/50 Hz. But you will get about 480 V secondary if you connect that way. If that's what you want, then you are fine.

If you want about 400 V, you have to connect to the 34 V primary. You would then get about 424 V secondary if the internal voltage drop remained constant. Since your Uk will be about 20 percent higher, I guess that your full load voltage will be 415 - 420 V. Be warned that your idling voltage will be on the high side.

Your losses will increase slightly due to more magnetization losses and more eddy current losses. They increase with frequency.

RE: Power transformer with different frequency rating

You would have to reduce the operating voltage so that you do not exceed the transformer's design V/Hz rating.  If the frequency is reduced by 5/6 then the maximum operating voltage must also be reduced by 5/6.

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