🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsРусскийفارسی中文日本語EntityQ1852883· pop 9· linked from 23 articlesPer-unit systemIn power systems, expression of system quantities as fractionsAvailable in 9 languagesEspañolFrançaisDeutsch日本語РусскийPortuguêsKarachay-Balkarفارسیvia Wikidata sitelinks · CC0ConnectionsAC powerEntityInternational Standard Book NumberEntityCategoriesElectrical engineeringElectric powerPower engineering