The invention relates to a silicone rubber composition having specific dielectric properties which can be used as insulator material in high voltage direct current applications and a method for the manufacture of cable accessories like cable joints. The invention comprises as well a method for the determination of the optimum dielectric properties and the related amount of dielectric active additives.

The present disclosure relates to a joint system of a power cable, in which pressure-resistance performance of a boundary area between a power cable and a joint box for connecting power cables is improved.

The present disclosure relates to a joint system of a power cable, in which pressure-resistance performance of a boundary area between a power cable and a joint box for connecting power cables is improved.

A connector device for connecting a cable includes a housing and a contacting element. The housing has a cover formed of a dielectric cover wall material and a base formed of a dielectric base wall material. The cover and the base are mated in a closed state of the housing and receive an end portion of the cable that has an electrically conductive portion. The contacting element electrically contacts the electrically conductive portion of the cable in the closed state of the housing. The housing is substantially gas-free in the closed state between the electrically conductive portion of the cable and the dielectric cover wall material, the electrically conductive portion of the cable and the dielectric base wall material, the contacting element and the dielectric cover wall material, and the contacting element and the dielectric base wall material.

Nonlinear composite compositions comprise a dielectric matrix material and flakes of a mixed metal oxide having the formula M1.sub.xM2.sub.yO.sub.z dispersed in the dielectric matrix material. M1 is selected from the group consisting of alkali metals, alkaline earth metals, and combinations thereof. M2 is a transition metal or post-transition metal, wherein M2 has an atomic number no greater than 78. The number x is in the range 0.3x1, y is a number in the range 0.5y1.5, and z is a number selected such that the mixed metal oxide is electrically neutral, wherein the amount of flakes in the nonlinear composite composition is sufficient that the nonlinear composite composition has a nonlinear increasing conductivity in response to increasing electric field. Methods of making nonlinear composite compositions and articles including them are disclosed.

Nonlinear composite compositions comprise a dielectric matrix material and flakes of a mixed metal oxide having the formula M1.sub.xM2.sub.yO.sub.z dispersed in the dielectric matrix material. M1 is selected from the group consisting of alkali metals, alkaline earth metals, and combinations thereof. M2 is a transition metal or post-transition metal, wherein M2 has an atomic number no greater than 78. The number x is in the range 0.3x1, y is a number in the range 0.5y1.5, and z is a number selected such that the mixed metal oxide is electrically neutral, wherein the amount of flakes in the nonlinear composite composition is sufficient that the nonlinear composite composition has a nonlinear increasing conductivity in response to increasing electric field. Methods of making nonlinear composite compositions and articles including them are disclosed.

An electrical junction box, preferably configured for use in electrical or hybrid vehicles, includes a junction box housing and a bus bar element located inside the junction box housing. The junction box housing has a first opening for receiving end portions of electrical cables. The bus bar element comprises connecting means configured to connect ferrules, provided at the wire end portions of the electrical cables. The junction box housing is made of a plastic material and the bus bar element is made of metal.

A rigid joint assembly including a first and second cable core end sections of a first and second electric cables, including cores having a conductor, and an insulation system having a semi-conducting layer, an insulation layer and a semi-conducting layer. The assembly includes a joint connection, and a water tight metal casing. The casing assembly has a first and second cable entry parts for receiving the first and second cable cores having joint assembly includes first and second deformation preventing members that surround cable core end sections and includes a rigid pipe.

A rigid joint assembly including a first and second cable core end sections of a first and second electric cables, including cores having a conductor, and an insulation system having a semi-conducting layer, an insulation layer and a semi-conducting layer. The assembly includes a joint connection, and a water tight metal casing. The casing assembly has a first and second cable entry parts for receiving the first and second cable cores having joint assembly includes first and second deformation preventing members that surround cable core end sections and includes a rigid pipe.

A medium or high voltage electrical device includes a housing, a central conductor provided within the housing, and a sacrificial cap configured for mounting on the housing. The sacrificial cap includes an outer housing, an insulated body, and a sacrificial conductor provided within the insulated body, wherein the sacrificial conductor electrically communicates with the central conductor within the housing when the sacrificial cap is mounted on the housing. A voltage test point terminal is provided within the insulated body and accessible via the outer housing of the sacrificial cap to capacitively couple with the sacrificial conductor. The sacrificial cap includes a portion configured to be physically severed to confirm that the electrical connector is de-energized.