Tranformer Circular Core vs. Rectangular Core
Tranformer Circular Core vs. Rectangular Core
(OP)
I am looking for information on the advantages (and disadvantages) of Circular core transformers versus rectangular core.
I have heard that circular offers technical advantages but the rectangular core is cheaper. Can someone provide feedback on this?
The applications I am most interested in are
5MVA-20MVA @ 46kv/4.16kV
100-200MVA @ 230/46kV
Any literature would be helpful also.
Thank you
I have heard that circular offers technical advantages but the rectangular core is cheaper. Can someone provide feedback on this?
The applications I am most interested in are
5MVA-20MVA @ 46kv/4.16kV
100-200MVA @ 230/46kV
Any literature would be helpful also.
Thank you






RE: Tranformer Circular Core vs. Rectangular Core
The primary benefit is short-circuit mechanical strength for through-faults. Waukesha used to claim that they had never had a through-fault failure on one of their units.
RE: Tranformer Circular Core vs. Rectangular Core
For the same area (iron) the cirumference (copper, losses) for a circular core is less
Higher cost is due to more difficult manufacturing:
more different widths of iron, more care during stacking
But with raising cost for copper and energy no one should use rectangular cross sections for transformers above a few kVA
RE: Tranformer Circular Core vs. Rectangular Core
dpc, as for Waukesha's claim I've seen their mechanical through-fault failure first hand.........not any better than the rest in that regard although they've taken steps recently to improve their through fault mechanical performance.
RE: Tranformer Circular Core vs. Rectangular Core
RE: Tranformer Circular Core vs. Rectangular Core