Three-winding transformer damage curve
Three-winding transformer damage curve
(OP)
Dear all,
There is a three-winding transformer rated:
345/13.8/6.9 kV transformer;
92/54.5/37.5 MVA
The impedance percentage of PS/PT/ST is 16/13/1.9%.
Please advise how to draw its damage curve?
What is the difference between the 2 winding and 3 winding transformer?
Thanks for your help in advance.
Stanley
There is a three-winding transformer rated:
345/13.8/6.9 kV transformer;
92/54.5/37.5 MVA
The impedance percentage of PS/PT/ST is 16/13/1.9%.
Please advise how to draw its damage curve?
What is the difference between the 2 winding and 3 winding transformer?
Thanks for your help in advance.
Stanley






RE: Three-winding transformer damage curve
RE: Three-winding transformer damage curve
The windings can be calculated on there own basis (nameplate rating of each winding). I have no idea how to protect the core (a large hunk of steel).
The delta winding is typical to be sized at 35% of the other two windings.
RE: Three-winding transformer damage curve
The tertiary winding is also Wye connection.
I wonder which damage curve of winding should be concerned?
Secondary winding? Tertiary winding?
RE: Three-winding transformer damage curve