×
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

3-phase motors: unbalanced current system

3-phase motors: unbalanced current system

3-phase motors: unbalanced current system

(OP)
Hi, I´m working with motor commissioning, my doubt is: when I measure the phase-current of a 3 phase assincronous motor, I got differences in order of 2% between the value of current of one phase and other, when can I say that the system is unbalanced, and which are the risks that I have working on a unbalanced system

Thanks

RE: 3-phase motors: unbalanced current system


2% unbalance current is probably OK, and may be caused by voltage unbalance or something like stator-winding dissymmetry.

Search this site for a fair amount of discussion on the matter, using keywords “ unbalance “ and “ imbalance “.
  

RE: 3-phase motors: unbalanced current system

Hello Freshsurfer,

See also Thread237-70765 "how to calculate kW losses in an unbalance motor". This may provide you with additional useful information.

Regards,
GGOSS

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