Invention Grant
- Patent Title: Multilayer stress control article and dry termination for medium and high voltage cable applications
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Application No.: US16477342Application Date: 2018-01-25
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Publication No.: US10720767B2Publication Date: 2020-07-21
- Inventor: Robert J. Schubert , Christopher J. Evoniuk , Jens Weichold , Andrew C. Lottes
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Gregg H. Rosenblatt
- International Application: PCT/US2018/015141 WO 20180125
- International Announcement: WO2018/144300 WO 20180809
- Main IPC: H02G15/064
- IPC: H02G15/064

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.
Public/Granted literature
- US20190379198A1 MULTILAYER STRESS CONTROL ARTICLE AND DRY TERMINATION FOR MEDIUM AND HIGH VOLTAGE CABLE APPLICATIONS Public/Granted day:2019-12-12
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