A contact ring including a ring-shaped structure formed of an electrically conductive material. The ring-shaped structure has a plurality of projections on at least one side and a plurality of blades on at least one side. The projections and the blades penetrate an electrically insulating surface layer of each of a pair of contact elements and contact an electrically conductive material of each of the contact elements to electrically connect the contact elements.

A high-current connector is provided, comprising an insulating body which has at least one contact carrier having at least one contact chamber, which has at least two through-openings on the plug-in side, and at least two electrically conductive plug-in contacts which are arranged parallel to one another in the contact chamber and each have a cable connection region at a first end and a plug-in region opposite at a second end, the plug-in regions of the plug-in contacts being guided through one of the through-openings each of the contact chamber. The high-current plug connector also has an electrically conductive connection element which is inserted into the contact chamber and which has at least two contact receptacles, into each of which one of the plug-in contacts is inserted interlockingly and frictionally by its plug-in region, and the at least two plug-in contacts are electrically conductively connected to one another by the connection element.

A high-current connector is provided, comprising an insulating body which has at least one contact carrier having at least one contact chamber, which has at least two through-openings on the plug-in side, and at least two electrically conductive plug-in contacts which are arranged parallel to one another in the contact chamber and each have a cable connection region at a first end and a plug-in region opposite at a second end, the plug-in regions of the plug-in contacts being guided through one of the through-openings each of the contact chamber. The high-current plug connector also has an electrically conductive connection element which is inserted into the contact chamber and which has at least two contact receptacles, into each of which one of the plug-in contacts is inserted interlockingly and frictionally by its plug-in region, and the at least two plug-in contacts are electrically conductively connected to one another by the connection element.

A connector assembly includes cages arranged as an upper cage and a lower cage in an up-down direction, a receptacle connector, a first liquid cooling tray and a second liquid cooling tray. Each cage includes a frame and a plurality of partitioning walls provided to the frame, and the frame and the plurality of partitioning walls together define a plurality of insertion space arranged transversely. The first liquid cooling tray is provided to a top portion of the upper cage and constitutes an upper wall surface of each of the plurality of insertion space of the upper cage. The second liquid cooling tray is provided between the upper cage and the lower cage, constitutes a lower wall surface of each of the plurality of insertion spaces of the upper cage, and constitutes an upper wall surface of each of the plurality of insertion space of the lower cage. A pressuring spring corresponding to each insertion space of the upper cage is provided on the upper surface of the second liquid cooling tray, and a pressuring spring corresponding to each insertion space of the lower cage is provided on the bottom plate.

A bridge joint assembly for use with a busway system includes a plurality of insulator assemblies, a bolt holding the insulator assemblies in a stack, a housing enclosing the insulator assemblies, a seal surrounding the bolt, and a bolt access system extending from a wall of the housing to the seal. The bolt includes a bolt head protruding from the stack. The bolt access system defines a bolt access passageway that provides access to the bolt head from outside the housing.

One aspect relates to a method for a ring electrode, including: providing an outer element with an outer tube and providing a first inner element with a first inner tube having a first core made of a sacrificial material. A material of the outer element and a material of the first inner element have a similar microstructure. A second inner element is provided with a second core made of a sacrificial material; A connection tube is formed by arranging the first inner element and the second inner element within the outer element. The first inner element and the second inner element are arranged concentrically. The composite tube is drawn in a longitudinal direction of the composite tube. The material of the outer element and the material of the first inner element maintain a simialar microstructure. A connection tube disc is seperated from the connection tube. The sacrificial material of the first core is removed and the sacrificial material of the second core is removed to obtain a contacting opening in the ring electrode.

One aspect relates to a method for a ring electrode, including: providing an outer element with an outer tube and providing a first inner element with a first inner tube having a first core made of a sacrificial material. A material of the outer element and a material of the first inner element have a similar microstructure. A second inner element is provided with a second core made of a sacrificial material; A connection tube is formed by arranging the first inner element and the second inner element within the outer element. The first inner element and the second inner element are arranged concentrically. The composite tube is drawn in a longitudinal direction of the composite tube. The material of the outer element and the material of the first inner element maintain a simialar microstructure. A connection tube disc is seperated from the connection tube. The sacrificial material of the first core is removed and the sacrificial material of the second core is removed to obtain a contacting opening in the ring electrode.

The invention relates to a contact element (1) for a plug connector, comprising a crimp region having crimp wings (5), with which same is connected to an electrical conductor of a line, wherein the contact element (1) has a spring-like contact geometry for a counter contact element in a contact region, wherein this contact geometry is provided in duplicate, characterised in that one part of the double contact geometry is formed by an additional contact element (3), wherein this additional contact element (3) is produced separately from the contact element (1) and, after production, same is arranged on the contact element (1) via a connection (4).

A contact system comprises a ground cylinder, a shielding cylinder press-fit with the ground cylinder, and a contact ring disposed between the ground cylinder and the shielding cylinder. The contact ring includes a strip of electrically conductive material defining a plurality of projections on at least one longitudinal side. The projections electrically contact the ground cylinder and the shielding cylinder for establishing an electrically conductive connection therebetween.

An externally switchable lid for securing to a utility tracer wire access housing and for selectively conductively engaging and disengaging a buried ground rod in order to locate a utility line via the tracer wire. The lid has a first surface supporting a switch and a second surface supporting a first terminal for connecting a tracer wire directly to the lid and the first terminal having a first end of a switch jumper fixedly secured thereto and a second terminal for connecting a ground wire to the ground switch. A locking mechanism is provided for securing the lid to the access housing while the lid is accessible above-ground. The lid connects to the access housing which has a length of the tracer wire and the ground wire extending from connection with the lid and extending underground.