Inrush on large autotransformers
Inrush on large autotransformers
(OP)
Hi
Anyone tell me what are typical maximum inrush values one can expect on large autotransformers (>200MVA, >=220kV)? I need to set the diff hi-set element on a 375MVA, 275kV unit.
Thanks.
Anyone tell me what are typical maximum inrush values one can expect on large autotransformers (>200MVA, >=220kV)? I need to set the diff hi-set element on a 375MVA, 275kV unit.
Thanks.






RE: Inrush on large autotransformers
RE: Inrush on large autotransformers
This seems to be the general rule of thumb for trfr inrush. But I have also seen that for small units (< 5MVA ) it can be up to 10p.u. and someone said for large autos you can look at 2.5p.u..
Are there perhas more specific rule of thumbs depending on trfr size?
Thanks.
RE: Inrush on large autotransformers