VUBB Series Tap-changers

Overview

Karshen fanni
A wata on-load tap-changer shine ikeji a kafa tapping connection na winding idan transformer ya kasance da load. Manufa ce shine taimaka don bincike voltage daga transformer da kuma jin daidaito da variations a cikin load situation. Tap-changer ya maye da transformer ta hanyar tap winding. Manufa shine tap selection, wanda yake da ita waɗanda ke canza number of turns a regulating winding.

Idan akwai abubuwa masu di¢erent circuit solutions, amma an sami ake da shi a kan shi shine da muhimmanci a gaba da technical performance da kuma potential for economic operation. Ta hanyar amfani da auxiliary contacts tare da vacuum interrupters, contacts suna da amfani don carrying current da kuma vacuum interrupters suna da amfani don energized switching. Ta hanyar wannan solution, zai iya buƙaci da biyu vacuum interrupters kafin phase.

Principle electrical circuit na VUBB an nuna a Figures¤03-20. Manufa shine commute load daga daya tap zuwa mafi, don canza voltage.

Dependent on in which direction center shaft ya faru, ana samun biyu di¢erent contact sequences – ko main contacts za su yi a farko, ko kuma a harshe mashi, transition contacts za su yi a farko. Figures sun nuna contact sequence tare da physical position na interrupter.