×
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

Is a Resistance-grounded system still considered 347Y/600?

Is a Resistance-grounded system still considered 347Y/600?

Is a Resistance-grounded system still considered 347Y/600?

(OP)
Looking at ratings on some motor protection circuit breakers, they have ratings for say, 277Y/480 or 347Y/600. If we have a low voltage generator with resistance grounded neutral, it's not considered a delta system really, but we also wouldn't consider it a 277Y/480 correct? So in effect, these MPCBs cannot be used on a resistance grounded Y system- is that right?

RE: Is a Resistance-grounded system still considered 347Y/600?

That's correct. As far as ratings of that sort are concerned there's solidly grounded and there's everything else. Your resistance grounded system falls into the everything else category.

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