Search International and National Patent Collections

1. (WO2018144300) MULTILAYER STRESS CONTROL ARTICLE AND DRY TERMINATION FOR MEDIUM AND HIGH VOLTAGE CABLE APPLICATIONS

Pub. No.:    WO/2018/144300    International Application No.:    PCT/US2018/015141
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Fri Jan 26 00:59:59 CET 2018
IPC: H01B 7/18
H01B 7/02
H01B 9/02
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: SCHUBERT, Robert J.
EVONIUK, Christopher J.
WEICHOLD, Jens
LOTTES, Andrew C.
Title: MULTILAYER STRESS CONTROL ARTICLE AND DRY TERMINATION FOR MEDIUM AND HIGH VOLTAGE CABLE APPLICATIONS
Abstract:
A tubular stress control article having an axial bore with a length comprises a first and innermost layer formed from an electrical stress control composition having a filler material comprising nanosilica-modified inorganic particles and a discontinuous arrangement of conductive material dispersed in an elastomeric material. At least a portion of the conductive material is in durable electrical contact with the inorganic particles. The article further comprises a second layer disposed on the first layer, the second layer comprising an electrical insulation material. The article also comprises a third layer disposed on the second layer, the third layer comprising an elastomeric stress control material. The article further comprises a fourth layer disposed on the third layer, the fourth layer comprising a track-resistant elastomeric material. Each of the first, second, third, and fourth layers are substantially continuous along the length of the axial bore.