×
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

RTD on stator windings

RTD on stator windings

RTD on stator windings

(OP)
hi, I got a problem on a 6000 V, 1,5 MW generator, the RTD on phase U is broken and I´d no spare installed, I´m thinking on install a new one on the head of the winding... the winding is a wire winding....my question is if somebody knows what´s the diference on º C, of the RTD in the slot and the RTD on the head of the winding... The kind of refrigeration is IC1, this means that the air from outside come into the generator from the non drive side and go out hot from the drive end side.... I´ll mount the RTD on the drive end side.... i think the diference is on 20 º C.... thank in advance for your attention... and  sorry for the bad english

RE: RTD on stator windings

Minco in Minneapolis, Mn USA sells small RTDs which can be placed in the cooling vents of the stator frame.  I have used these utilizing insulating putty to retain in place and blocking the airflow through this air duct.  This gives you the closest you can come to the coil temperature in the middle of the core

RE: RTD on stator windings

A good guess is 20°C difference, but each machine performs according with specific construction details.
After the new RTD is installed on the coil head, run your generator with load and compare the temperature readings against the average of the others (slot embeded RTD's). That will provide you a better figure for the difference of temperature reading and a gide to set up your new alarm or trip off temperature.

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