Dreistellungs-Mittelspannungs-Kompakttrenner mit Vakuumunterbrechung und -Trennung in Luft Bis 17 Kv oder in einem Geschlossenen Druckgehäuse mit Isolierung in Trockenluft Bis 36 Kv, und Verfahren zu dessen Betrieb

Details

Veröffentlichungs-Nr.

EP4738414

Anmeldetag

4. November 2025

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

Abstract

A medium-voltage, compact, three-position (closed, open, earthed) switch-disconnector with current interruption in a vacuum-sealed chamber, and insulated between the phases and disconnected in air up to 17 kV or, in a sealed pressure-tight enclosure, insulated between the phases and disconnected in dry air up to 36 kV, said switch-disconnector comprising a three-pole assembly, wherein each pole comprises: a support element (11, 13) of insulating material carrying: - a first male plug-in current-carrying and disconnecting contact in air (23) associated with a fixed upper right-angled contact (21); - a telescopic, movable, current-carrying and disconnecting contact in air (39, 41, 43) arranged on a hollow cylindrical support (37) of insulating material rotatable with respect to the support element (11, 13); and - a second fixed male lower plug-in contact (27) associated with a fixed right-angled earthing contact (25), wherein said support element (11, 13) is T-shaped with curved arms and with a widened hollow base (29) in which said hollow cylindrical support (37) made of insulating material and carrying said movable telescopic contact (39, 41, 43) is rotatably arranged, and wherein said movable current-carrying and disconnecting contact in air (39, 41, 43) is rotatable between a first closed position engaged with said first, male, plug-in current-carrying and disconnecting contact in air (23), a second disconnected position, and a third position connected to earth via said second fixed earth contact (27); said switch further comprising a vacuum extinguishing chamber (57) fixed near one end of the support element (11, 13) near the fixed upper right-angled contact (21), said vacuum-sealed chamber (57) containing two axially aligned contact rods (59, 61), one of which (59) is fixed and connected to said fixed upper right-angled contact (21), and the other (61) is movable for vacuum interruption by means of an electrical connection linkage operatively connected to a free end of said movable current-carrying and disconnecting contact in air (39, 41, 43).

Anmelder

Firma

Tosi, Giampietro

Land

🇮🇹 Italien