Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

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

Three winding transformer parameters

Status
Not open for further replies.
power2023

power2023

Electrical
Joined
Jan 3, 2023
Messages
2
Location
DE
Hi,
I am looking for the typical short circuit impedance and X/R ratio parameters for a three winding transformer for PV connection to grid. The voltage rating for the transformer should be 24.8kV/0.8kV/0.8kV and the power rating is 4MVA/2MVA/2MVA.
Can anyone please help me get an idea of what are the typical ranges.

Thanks!
 
Sort by date Sort by votes
X/R ratio for such Solar Transformers is 7-8 (impedance=6.5 %)
 
Upvote 0 Downvote
Oh cool, thanks! Does that mean that Zp-s, Zp-t and Zs-t are all 6.5% roughly?
 
Upvote 0 Downvote
No. Usually, it will be HV-LV1=HV-LV2 = 6.5 % LV1-LV2 = 12 %
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

S
  • Question Question
Two winding transformer equivalent from a three winding transformer
Replies
4
Views
6K
Stativa Andrei
S
cyriousn
  • Locked
  • Question Question
Three Winding Transformer Impedance Question
Replies
7
Views
3K
davidbeach
davidbeach
cyriousn
  • Locked
  • Question Question
Two Winding vs. Three Winding Transformer
Replies
5
Views
5K
wcaseyharman
wcaseyharman
O
  • Question Question
3-winding transformer impedance at extreme taps.
Replies
5
Views
10K
prc
prc
pdias
  • Locked
  • Question Question
Short Circuit Calculation - Impedance Method - Three Winding Power Transformer
Replies
5
Views
2K
pdias
pdias

Part and Inventory Search

Sponsor

Back
Top