The invention relates to an apparatus and a method for joining extended lengths of conduit. The apparatus and method provide a means for decreasing the time required to assemble extended lengths of conduit. The apparatus for use with the corresponding method comprises an apparatus head, an extender joining body and a conduit interface.

The invention relates to an apparatus and a method for joining extended lengths of conduit. The apparatus and method provide a means for decreasing the time required to assemble extended lengths of conduit. The apparatus for use with the corresponding method comprises an apparatus head, an extender joining body and a conduit interface.

An installation tool and methods for installing a splice kit for a heating cable is provided. The installation tool includes a body, a first channel, and a first cavity. The first channel is defined in the body and configured to retain a first insulating tubing of the splice kit. The first cavity is within the first channel and configured to retain a first connector of the splice kit. The body is configured to retain the first insulating tubing and the first connector in a predetermined formation during installation of the first insulating tubing and the first connector to the heating cable, and the body is further configured to be removed from the first insulating tubing and the first connector following installation of the first insulating tubing and the first connector to the heating cable.

An installation tool and methods for installing a splice kit for a heating cable is provided. The installation tool includes a body, a first channel, and a first cavity. The first channel is defined in the body and configured to retain a first insulating tubing of the splice kit. The first cavity is within the first channel and configured to retain a first connector of the splice kit. The body is configured to retain the first insulating tubing and the first connector in a predetermined formation during installation of the first insulating tubing and the first connector to the heating cable, and the body is further configured to be removed from the first insulating tubing and the first connector following installation of the first insulating tubing and the first connector to the heating cable.

Various embodiments of the teachings herein include an electrical device comprising: a cable wire; a cable insulation arranged around the cable wire such that a section of the cable wire at least partially longitudinally protrudes out of the cable insulation; a heat-shrink tube at least partially arranged around the cable insulation and at least partially around the section of the cable wire; and a sealing material at least partially inside the cable insulation thereby sealing any gaps between the cable wire and the cable insulation.

An ultra-high-voltage DC power cable system capable of simultaneously preventing or minimizing electric field distortion, a reduction of DC dielectric strength, and a reduction of impulse breakdown strength due to the accumulation of space charges in an insulating layer of a cable and an insulating material of an intermediate connection part.

A method of building a joint insulation of a power cable joint including a conductor joint connecting a first conductor of a first cable length to a second conductor of second cable length, the method including: a) winding a first electrically insulating tape around an inner semiconducting layer that covers the conductor joint so that the first electrically insulating tape connects a first cable length insulation layer of the first cable length to a second cable length insulation layer of the second cable length, to form an inner insulation layer of the joint insulation, and b) winding a second electrically insulating tape around the inner insulation layer, so that the second electrically insulating tape connects the first cable length insulation layer to the second cable length insulation layer, to form an outer insulation layer of the joint insulation, wherein the first electrically insulating tape has a higher peroxide content than the second electrically insulating tape, and c) crosslinking the joint insulation.

A method of building a joint insulation of a power cable joint including a conductor joint connecting a first conductor of a first cable length to a second conductor of second cable length, the method including: a) winding a first electrically insulating tape around an inner semiconducting layer that covers the conductor joint so that the first electrically insulating tape connects a first cable length insulation layer of the first cable length to a second cable length insulation layer of the second cable length, to form an inner insulation layer of the joint insulation, and b) winding a second electrically insulating tape around the inner insulation layer, so that the second electrically insulating tape connects the first cable length insulation layer to the second cable length insulation layer, to form an outer insulation layer of the joint insulation, wherein the first electrically insulating tape has a higher peroxide content than the second electrically insulating tape, and c) crosslinking the joint insulation.

Systems and methods for designing and assembling form boards with attached wire routing devices for use in wire bundle assembly. The assembly method comprises: (a) establishing a coordinate system of a form board having a multiplicity of holes; (b) using a computer system to determine locations of form board devices of different types with reference to the coordinate system of the form board based on engineering data specifying a wire bundle configuration; and (c) fastening the form board devices of different types to respective holes of the form board having centers closest to respective locations determined in step (b). The form board devices may be inserted robotically or manually.

Systems and methods for designing and assembling form boards with attached wire routing devices for use in wire bundle assembly. The assembly method comprises: (a) establishing a coordinate system of a form board having a multiplicity of holes; (b) using a computer system to determine locations of form board devices of different types with reference to the coordinate system of the form board based on engineering data specifying a wire bundle configuration; and (c) fastening the form board devices of different types to respective holes of the form board having centers closest to respective locations determined in step (b). The form board devices may be inserted robotically or manually.