A ground connection structure includes: a shield projecting portion being a part of a shield layer of a shield wire projected outside of an exterior covering to be exposed; an annular member for grounding disposed in a position surrounding an outer circumference of the shield wire and including a housing chamber having an opening along an annular shape of the annular member for grounding and being configured to house the shield projecting portion and a ground wire inserted from the opening; and a push-in member inserted from the opening and housed in the housing chamber after insertion of the ground wire and the shield projecting portion to bring the shield projecting portion and the ground wire into close contact with each other. The annular member for grounding includes locking claws configured to project into the housing chamber and lock the push-in member inserted into the housing chamber.

A ground connection structure includes: a shield projecting portion being a part of a shield layer of a shield wire projected outside of an exterior covering to be exposed; an annular member for grounding disposed in a position surrounding an outer circumference of the shield wire and including a housing chamber having an opening along an annular shape of the annular member for grounding and being configured to house the shield projecting portion and a ground wire inserted from the opening; and a push-in member inserted from the opening and housed in the housing chamber after insertion of the ground wire and the shield projecting portion to bring the shield projecting portion and the ground wire into close contact with each other. The annular member for grounding includes locking claws configured to project into the housing chamber and lock the push-in member inserted into the housing chamber.

A pre-expanded cover assembly for protecting a cable splice connection including a cable, the cable including an electrical conductor surrounded by a cable insulation layer, includes a splice body assembly and a removable holdout. The splice body assembly includes a tubular, cold-shrinkable, electrically insulative, elastomeric splice body having an interior surface defining an interior passage. The splice body assembly further includes a tubular layer of a conformable medium pre-mounted on the interior surface of the splice body. The conformable medium is a flowable material having a high electrical permittivity. The splice body assembly is mounted on the holdout such that the holdout maintains the splice body in an elastically radially expanded state, and the holdout is selectively removable from the splice body to permit the splice body to elastically radially contract. The layer of the conformable medium is positioned and configured such that, when the pre-expanded cover assembly is positioned adjacent the cable splice connection, the holdout is removed from the splice body, and the splice body elastically radially contracts onto the cable splice connection, the layer of the conformable medium will be radially interposed between and engage each of the interior surface of the splice body and an opposing interface surface of the cable insulation.

A pre-expanded cover assembly for protecting a cable splice connection including a cable, the cable including an electrical conductor surrounded by a cable insulation layer, includes a splice body assembly and a removable holdout. The splice body assembly includes a tubular, cold-shrinkable, electrically insulative, elastomeric splice body having an interior surface defining an interior passage. The splice body assembly further includes a tubular layer of a conformable medium pre-mounted on the interior surface of the splice body. The conformable medium is a flowable material having a high electrical permittivity. The splice body assembly is mounted on the holdout such that the holdout maintains the splice body in an elastically radially expanded state, and the holdout is selectively removable from the splice body to permit the splice body to elastically radially contract. The layer of the conformable medium is positioned and configured such that, when the pre-expanded cover assembly is positioned adjacent the cable splice connection, the holdout is removed from the splice body, and the splice body elastically radially contracts onto the cable splice connection, the layer of the conformable medium will be radially interposed between and engage each of the interior surface of the splice body and an opposing interface surface of the cable insulation.

A method is provided for applying a field grading layer to a power cable includes preparing a polymer composition having a polymer matrix, at least one conductive filler different from a non-linear conductive organic filler, and at least one crosslinking agent. The method includes extruding the polymer composition into a crosslinkable field grading tape and winding the crosslinkable field grading tape onto a section of power cable in need of field grading. The crosslinkable tape is crosslinked to obtain a field grading layer.

A method is provided for applying a field grading layer to a power cable includes preparing a polymer composition having a polymer matrix, at least one conductive filler different from a non-linear conductive organic filler, and at least one crosslinking agent. The method includes extruding the polymer composition into a crosslinkable field grading tape and winding the crosslinkable field grading tape onto a section of power cable in need of field grading. The crosslinkable tape is crosslinked to obtain a field grading layer.

The present invention relates to a composite direct connector for a high voltage line. The composite direct connector for a high voltage line according to the present invention is characterized by comprising: a pair of terminal connecting rings electrically connected to each other; and ground terminals installed on the terminal connecting rings, respectively, and having a neutral line of a high voltage line on one side and a neutral line of a high voltage line on the other side connected to each other. According to the present invention as described thus far above, a neutral line for connecting a high voltage line and for external grounding is rendered unnecessary by a connecting member, thus making it easy to arrange ground wires within a structure, and affording easy construction without regard to access space.

The present invention relates to a composite direct connector for a high voltage line. The composite direct connector for a high voltage line according to the present invention is characterized by comprising: a pair of terminal connecting rings electrically connected to each other; and ground terminals installed on the terminal connecting rings, respectively, and having a neutral line of a high voltage line on one side and a neutral line of a high voltage line on the other side connected to each other. According to the present invention as described thus far above, a neutral line for connecting a high voltage line and for external grounding is rendered unnecessary by a connecting member, thus making it easy to arrange ground wires within a structure, and affording easy construction without regard to access space.

A ground connection structure includes: a shield projecting portion being a part of a shield layer of a shield wire projected outside of an exterior covering to be exposed; an annular member for grounding disposed in a position surrounding an outer circumference of the shield wire and including a housing chamber having an opening along an annular shape of the annular member for grounding and being configured to house the shield projecting portion and a ground wire inserted from the opening; and a push-in member inserted from the opening and housed in the housing chamber after insertion of the ground wire and the shield projecting portion to bring the shield projecting portion and the ground wire into close contact with each other. The annular member for grounding includes locking claws configured to project into the housing chamber and lock the push-in member inserted into the housing chamber.

A ground connection structure includes: a shield projecting portion being a part of a shield layer of a shield wire projected outside of an exterior covering to be exposed; an annular member for grounding disposed in a position surrounding an outer circumference of the shield wire and including a housing chamber having an opening along an annular shape of the annular member for grounding and being configured to house the shield projecting portion and a ground wire inserted from the opening; and a push-in member inserted from the opening and housed in the housing chamber after insertion of the ground wire and the shield projecting portion to bring the shield projecting portion and the ground wire into close contact with each other. The annular member for grounding includes locking claws configured to project into the housing chamber and lock the push-in member inserted into the housing chamber.