Kaksipiirien
Kaksipiirien is a Finnish term used primarily in electrical engineering to refer to devices or configurations that involve two separate circuits or windings. The base compound kaksipiiri combines kaksi (two) and piiri (circuit, winding, or boundary). The word is commonly found in plural genitive form kaksipiirien when describing properties of multiple devices, for example kaksipiirien muuntajat (two-winding transformers) or kaksipiirien kytkennät (two-circuit connections). The corresponding singular adjective kaksipiirinen denotes something with two circuits, and the singular noun kaksipiiri can appear in technical descriptions.
In practice, kaksipiirinen/kaksipiirien terminology is central to discussions of transformers, reactors, and other electrical equipment where
The concept contrasts with yksipiirinen (single-winding) and is commonly encountered in contexts related to transformer design,