yksivaiheiselle

Yksivaiheiselle is the allative singular form of the Finnish adjective yksivaiheinen, meaning single-phase or single-stage. In Finnish, adjectives agree with the noun they modify in case, so when the noun is in the allative case the adjective takes the -iselle ending. The form is common in technical and product descriptions where something is intended for or designed for single‑phase operation.

In practical use, yksivaiheiselle appears in phrases describing electrical equipment, installations, or voltages that are suitable for or aimed at a single‑phase supply. For example, phrases like yksivaiheiselle käyttöjännitteelle describe devices intended for single‑phase operating voltage, and yksivaiheiselle verkkopiirille can refer to a circuit designed for a single‑phase network. This contrasts with kolmivaiheinen, which describes three‑phase systems, a common distinction in power distribution and machinery design.

Beyond electrical contexts, the form can also occur in other domains where an adjective meaning single‑phase or single‑stage modifies a noun in the allative, though such use is most frequent in technical Finnish. The base form of the adjective is yksivaiheinen, and related inflections exist for other cases and numbers. In summary, yksivaiheiselle signals suitability for single‑phase contexts and is a standard part of Finnish technical vocabulary describing electrical systems and components.