US 12,322,933 B2
Switching device with reduced partial discharge and improved triple point characteristics
Edgar Avalos Ortiz, Murfreesboro, TN (US); Pengkai Han, Xi'an (CN); Francois Gentils, Grenoble (FR); Sergio Flores, Smyrna, TN (US); Matthew Alan Williford, Nashville, TN (US); and David Dos Santos, Nashville, TN (US)
Assigned to Schneider Electric USA, Inc., Boston, MA (US)
Filed by Schneider Electric USA, Inc., Andover, MA (US)
Filed on Apr. 9, 2024, as Appl. No. 18/630,789.
Application 18/630,789 is a continuation of application No. 17/557,225, filed on Dec. 21, 2021, granted, now 11,955,781.
Claims priority of provisional application 63/131,412, filed on Dec. 29, 2020.
Prior Publication US 2024/0275142 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02B 11/00 (2006.01); H01B 17/56 (2006.01); H02B 11/04 (2006.01)
CPC H02B 11/04 (2013.01) [H01B 17/56 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus with reduced partial discharge in insulation surrounding a conductor, comprising:
a disk plate with an inward-facing surface placed coaxially on one end of a cylindrical conductor, the disk plate including a plurality of raised embosses formed on the inward facing surface of the disk plate and positioned along a circle coaxial with the conductor; and
an insulator sleeve surrounding the conductor, the insulator sleeve having an annular cross section with a radially inward-facing surface and an end portion flush with the raised embosses on the disk plate;
wherein the raised embosses on the disk plate separate the end portion of the insulator sleeve by a first gap distance from the inward facing surface of the disk plate to reduce formation of a triple point region between the surface of the disk plate and the insulator sleeve; and
wherein the encapsulating portions of the insulator sleeve surrounding the inserts have a radially inward-facing surface that is separated by a second gap distance from the outer cylindrical surface of the conductor to reduce formation of a triple point region between the outer cylindrical surface of the conductor and the insulator sleeve.