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!

*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.

Jobs

1.3MW/400V/ short circuit torque calculation...

1.3MW/400V/ short circuit torque calculation...

(OP)
I have to calculate the 2 phase SC fault torque & 3 phase SC fault torque so what formula I should use for this calculation. The Xd'' is 0.16 and X2 is 0.2 for the alternator . The rating of the alternator is
1300 kW/3 phase/400V/4Pole /1500 RPM

RE: 1.3MW/400V/ short circuit torque calculation...

In my opinion, in p.u.: Tmax=1.3*VLL^2/xd" for phase-to-phase short-circuit at generator terminals that means 1.3*1^2/.16=8.125 and Tmax=VLL^2/xd”=6.25 for 3 phase short-circuit.
In order to find this in Nm you have to multiply by Trated=Prated/(2*pi()*rpm/60)
Trated=1300*1000/(2*pi()*1500/60)= 8276.057 Nm

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close