Need transformer Wiring diagram help
Close
Login to Your Account
Results 1 to 6 of 6
  1. #1
    Join Date
    Oct 2003
    Location
    Pinnacle, NC USA
    Posts
    1,138
    Post Thanks / Like
    Likes (Given)
    1547
    Likes (Received)
    48

    Default Need transformer Wiring diagram help

    Guys,

    I bought this Italian press at auction (online) in Surrey, BC.

    There is no name plate information.
    The motor data is 380wye/220delta 50 Hertz.

    From my reading 60 Hertz is standard in Canada.
    In the control cabinet there's a small tformer.

    From the attached pictures can guys interpret how this is wired?
    I have had no luck in learning how the shop was wired in Canada. The owner is overseas on holiday.

    I'm not sure if this tformer is stepping down the 480 to run the press near the 380 nameplate voltage.

    Thanks,

    Tom

    Sent from my SM-G960U1 using Tapatalk

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    29,496
    Post Thanks / Like

    Default

    100VA is tiny, so I would suppose its a control transformer - making juice for relays / mag starter coils

  3. Likes TFPace liked this post
  4. #3
    Join Date
    Oct 2003
    Location
    Pinnacle, NC USA
    Posts
    1,138
    Post Thanks / Like
    Likes (Given)
    1547
    Likes (Received)
    48

    Default

    Quote Originally Posted by johnoder View Post
    100VA is tiny, so I would suppose its a control transformer - making juice for relays / mag starters
    Thank you John

    Sent from my SM-G960U1 using Tapatalk

  5. #4
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    29,496
    Post Thanks / Like

    Default

    Many such coils have the voltage they need printed on them in plain sight - which will be what the transformer is putting out currently

  6. #5
    Join Date
    Jul 2014
    Location
    MI USA
    Posts
    878
    Post Thanks / Like
    Likes (Given)
    197
    Likes (Received)
    363

    Default

    The control transformer is wired for 480V input, and 120V output for the controls.

    The motor is likely wired for 380V input, but powered at 480V 3Φ 60Hz.

    Motor will run fine at 480V 60Hz, but run at 20% faster than rated speed for 50Hz.

    SAF Ω

  7. Likes TFPace liked this post
  8. #6
    Join Date
    Oct 2003
    Location
    Pinnacle, NC USA
    Posts
    1,138
    Post Thanks / Like
    Likes (Given)
    1547
    Likes (Received)
    48

    Default

    Quote Originally Posted by SAF View Post
    The control transformer is wired for 480V input, and 120V output for the controls.

    The motor is likely wired for 380V input, but powered at 480V 3Φ 60Hz.

    Motor will run fine at 480V 60Hz, but run at 20% faster than rated speed for 50Hz.


    SAF Ω


    Hello SAF Ω

    This is what I was hoping to find out.

    Thank you guys for the help!!!

    Tom


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •