Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations pierreick on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Xd for leroy sommer generator

Status
Not open for further replies.

gaux

Mechanical
Jan 27, 2009
48
I´ll like to know the Xd for a leroy sommer generator, i thought that was 15 but i don´t remmenber
 
Replies continue below

Recommended for you

generator is 300kw and 400 volts
 
gaux

I think that your memory is failing you, Xd for an alternator of this size would be in the region of 2.85
X'd about 0.18
X"d about 0.13

 
Careful guys!

Xd is sychronous reactance - and 150% - 300% is of the right order for this size.

Xd' is transient reactance, and 15% - 30% is the sort of value you see

Xd" is subtransient reactance, and can be say 5 - 20%

It all depends on the exact design and winding configuration

Xd' and Xd" are the ones you need most, for fault level calculations etc.

Why not ask Leroy Somer?
You will need the frame size and serial number from the nameplate
 
thanks at the end i find it, and it´s x´´d is 9,3, Xd 327 and X´d is 15,5, and yes, i go through your link and find on leroy somer....
thanks very much

 
Status
Not open for further replies.

Part and Inventory Search

Sponsor