Relief of dielectric stress in high voltage cable connections

Claim 2

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable, comprising a housing defining a hollow section for receiving said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of said high voltage cable; and a tube of high permittivity homogeneous material having relatively smooth geometry positioned in the housing with one end of the tube coaxially contacting the ground electrode for surrounding an exposed portion of the insulation of said high voltage cable, which homogeneous material substantially includes one or more titanates and/or titanium dioxide.

Claim 3

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable according to claim 1, further comprising a high voltage electrode positioned in the housing for coaxially contacting the conductor of said high voltage cable; and wherein the other end of the tube coaxially contacts the high voltage electrode.

Claim 4

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, and wherein the tube comprises a plurality of annular segments having conductive end coatings.

Claim 5

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, and wherein the tube comprises a plurality of annular segments having conductive end coatings.

Claim 6

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable according to claim 3, wherein the thickness of the segments is decreased with increasing distance away from the ground electrode.

Claim 7

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, and wherein the tube is isolated from contact with the conductor of a said high voltage cable and wherein the permittivity of the tube is at least 15.

Claim 8

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, and wherein the tube is isolated from contact with the conductor of a said high voltage cable and wherein the permittivity of the tube is at least 15.

Claim 9

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, wherein the other end of the tube coaxially contacts the high voltage electrode, and wherein the permittivity of the tube is at least 50 to 100 times the permittivity of the insulation of a said high voltage cable, the minimum being dependent upon the thickness and the length of the tube.

Claim 10

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, wherein the other end of the tube coaxially contacts the high voltage electrode, and wherein the permittivity of the tube is at least 50 to 100 times the permittivity of the insulation of a said high voltage cable, the minimum being dependent upon the thickness and the length of the tube.

Claim 11

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable, comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, wherein the other end of the tube coaxially contacts the high voltage electrode, and wherein the permittivity of the tube is at least 50.

Claim 12

Means for relieving dielectric stress at a termination of a shielded and insulated high voltage cable, comprising a housing defining a hollow section for receiving a said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of a said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of a said high voltage cable; and a tube of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of a said high voltage cable, wherein one end of the tube coaxially contacts the ground electrode, wherein the geometry of the tube is relatively smooth, wherein the other end of the tube coaxially contacts the high voltage electrode, and wherein the permittivity of the tube is at least 50.

Claim 13

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, which homogeneous material substantially includes one or more titanates and/or titanium dioxide.

Claim 14

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, which homogeneous material substantially includes one or more titanates and/or titanium dioxide.

Claim 15

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables according to claim 8, wherein one end of each tube coaxially contacts the ground electrode and the other end of each tube coaxially contacts the high voltage electrode.

Claim 16

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, wherein the geometry of each tube is relatively smooth, and wherein the number of tubes is double the number of hollow sections, wherein each tube coaxially contacts one of the electrodes, and wherein the two tubes in each hollow section are isolated from each other.

Claim 17

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode positioned in the housing for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, wherein the geometry of each tube is relatively smooth, and wherein the number of tubes is double the number of hollow sections, wherein each tube coaxially contacts one of the electrodes, and wherein the two tubes in each hollow section are isolated from each other.

Claim 18

Means for relieving dielectric stress in the region between a high voltage conductor and a ground electrode, comprising a housing; a ground electrode a high voltage electrode positioned in the housing for contacting a said high voltage conductor; and a homogeneous high permittivity material having a relatively smooth geometry and positioned in the housing and contacting both the high voltage electrode and the ground electrode, which homogeneous material substantially includes one or more titanates and/or titanium dioxide.

Claim 19

Means for relieving dielectric stress in the region between a high voltage conductor and a ground electrode, comprising a housing; a ground electrode a high voltage electrode positioned in the housing for contacting a said high voltage conductor; and a homogeneous high permittivity material having a relatively smooth geometry and positioned in the housing and contacting both the high voltage electrode and the ground electrode, which homogeneous material substantially includes one or more titanates and/or titanium dioxide.

Claim 20

Means for relieving dielectric stress at a splice of a pluralIty of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, and wherein the permittivity of each tube is at least 15.

Claim 21

Means for relieving dielectric stress at a splice of a pluralIty of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, and wherein the permittivity of each tube is at least 15.

Claim 22

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables according to claim 12, wherein one end of each tube coaxially contacts the ground electrode and the other end of each tube coaxially contacts the high voltage electrode, and wherein the permittivity of each tube is at least 50.

Claim 23

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, and wherein each tube comprises a plurality of annular segments having conductive end coatings.

Claim 24

Means for relieving dielectric stress at a splice of a plurality of shielded and insulated high voltage cables, comprising a housing defining hollow sections for receiving each said high voltage cable; a ground electrode for coaxially contacting the shielding of each said high voltage cable; a high voltage electrode positioned in the housing for coaxially contacting the conductor of each said high voltage cable; and a plurality of tubes of high permittivity homogeneous material having relatively smooth geometry and positioned in the housing for surrounding an exposed portion of the insulation of each said high voltage cable, wherein one end of each tube coaxially contacts at least one of the electrodes, and wherein each tube comprises a plurality of annular segments having conductive end coatings.