Premolded mechanically prestressed voltage stress control cones

Details Premolded mechanically prestressed voltage stress control cones Premolded mechanically prestressed voltage stress control cones

1985-04-24

1987-07-21

Askin, Laramie E.

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

174DIG8, 264230, H02G 15068

Patent

active

046819851

ABSTRACT:
Voltage stress control cones for high voltage cable terminations are produced by premolding and radially expanding to mechanically prestress. The mechanically prestressed premolded cone is slipped over the insulation of a cable end and heat relaxed to shrink tightly over the cable. The cone is fabricated from cross-linkable polyethylene or other cross-linkable polymeric material having substantially the same electrical and thermal characteristics as the cross-linked polymeric insulation of the cable. A semiconductive layer of cross-linked polymeric material provides the transition between the insulation of the cone and the semiconductive insulation shield of the cable.

REFERENCES:
patent: 3317655 (1967-05-01), Oatess et al.
patent: 4035534 (1977-07-01), Nyberg
patent: 4365947 (1982-12-01), Bahder et al.

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