An electrical connector includes multiple electrical modules sequentially stacked along a vertical direction. Each electrical module includes an insulating block being arc-shaped, a row of conductors fixed to the insulating block, and a first shielding member. The row of conductors includes multiple first grounding conductors and multiple pairs of first signal conductors arranged on the insulating block along a left-right direction. The two first signal conductors in a same pair of first signal conductors have a same length. The first shielding member has a first main body portion overlapping with a projection of one pair of first signal conductors in the vertical direction. The first shielding member and each conductor bend and extend downward from a top thereof and backward from a front thereof to be arc-shaped. The first contact portions of the row of conductors located on the same electrical module are located on a same horizontal plane.

An electrical connection system includes a mounting stud having a base configured for mounting to a conductive surface. One or more one ring-shaped lugs, formed of an electrically conductive material, are configured for being positioned on the mounting stud for surrounding the mounting stud. The ring-shaped lug includes one or a plurality of interior channels extending around the inside diameter thereof. A contact spring is seated within a respective interior channel and is electrically conductive and dimensioned to extend radially inwardly from the channel and contact the mounting stud when the ring-shaped lug is positioned thereon. The contact spring is configured to at least partially collapse in the radial direction and to provide a spring bias against the mounting stud for providing an electrical connection between the ring-shaped lug and mounting stud. A locking cap is positioned on the mounting stud over the at least one ring-shaped lug for locking with the mounting stud and securing the ring-shaped lugs on the mounting stud for a secure electrical connection.

An electrical connection system includes a mounting stud having a base configured for mounting to a conductive surface. One or more one ring-shaped lugs, formed of an electrically conductive material, are configured for being positioned on the mounting stud for surrounding the mounting stud. The ring-shaped lug includes one or a plurality of interior channels extending around the inside diameter thereof. A contact spring is seated within a respective interior channel and is electrically conductive and dimensioned to extend radially inwardly from the channel and contact the mounting stud when the ring-shaped lug is positioned thereon. The contact spring is configured to at least partially collapse in the radial direction and to provide a spring bias against the mounting stud for providing an electrical connection between the ring-shaped lug and mounting stud. A locking cap is positioned on the mounting stud over the at least one ring-shaped lug for locking with the mounting stud and securing the ring-shaped lugs on the mounting stud for a secure electrical connection.

A device that is capable of creating multiple connections on a grounding point in a single airport hangar, as well as reducing the likelihood of there being a tripping hazard over the connected cables, while also assisting in preventing damage to cable connections which may result from vehicles being driven inside an airport hangar.

A device that is capable of creating multiple connections on a grounding point in a single airport hangar, as well as reducing the likelihood of there being a tripping hazard over the connected cables, while also assisting in preventing damage to cable connections which may result from vehicles being driven inside an airport hangar.

An electrical connector includes: plural terminal modules stacked laterally, each of the terminal modules including an insulating body, plural pairs of signal terminals held by the insulating body, plural ground terminals held by the insulating body, and a first ground plate and a second ground plate located on opposite sides of the insulating body, wherein: in each terminal module, the ground terminals and the pairs of signal terminals are alternately arranged in a vertical direction, each pair of signal terminals are arranged in a first plane, each ground terminal is arranged in a second plane intersecting the first plane, the first ground plate, the second ground plate, and the ground terminals shield each pair of signal terminals circumferentially.

Electrical equipment is grounded in order to suppress ground potential rise in a healthy phase due to a failure of a line in a distribution line, to reduce abnormal voltages or prevent the occurrence of abnormal voltages caused by lightning surges, etc., to operate a protective relay when a ground fault occurs, or the like. Grounding is installed by burying a grounding electrode such as a copper rod in the ground and connecting the electrical equipment to be protected with a grounding line, and at this time, a reference value of grounding resistance varies according to the equipment. When grounding electrical equipment such as lightning arresters and transformers, it is necessary to lower a grounding resistance value, but a problem occurs when installing grounding by digging a pit in an urban area to erect an electric pole in that it is difficult to lower the grounding resistance value since it is difficult to install grounding in parallel because roads are paved. Accordingly, the objective of the present invention is to provide an apparatus and a method capable of lowering the grounding resistance value by digging a pit to erect an electric pole, and burying a grounding rod by means of hitting on a side of the pit diagonally in various directions, and installing grounding in series or parallel.

Electrical equipment is grounded in order to suppress ground potential rise in a healthy phase due to a failure of a line in a distribution line, to reduce abnormal voltages or prevent the occurrence of abnormal voltages caused by lightning surges, etc., to operate a protective relay when a ground fault occurs, or the like. Grounding is installed by burying a grounding electrode such as a copper rod in the ground and connecting the electrical equipment to be protected with a grounding line, and at this time, a reference value of grounding resistance varies according to the equipment. When grounding electrical equipment such as lightning arresters and transformers, it is necessary to lower a grounding resistance value, but a problem occurs when installing grounding by digging a pit in an urban area to erect an electric pole in that it is difficult to lower the grounding resistance value since it is difficult to install grounding in parallel because roads are paved. Accordingly, the objective of the present invention is to provide an apparatus and a method capable of lowering the grounding resistance value by digging a pit to erect an electric pole, and burying a grounding rod by means of hitting on a side of the pit diagonally in various directions, and installing grounding in series or parallel.

The invention relates to a cooking oven comprising at least two entities made of sheet metal (2, 3), each sheet metal entity (2, 3) comprising at least one surface carrying an enamel layer, specifically a vitreous enamel layer, said enamelled sheet metal entities (2, 3) overlapping each other and a screw connection for grounding and coupling said enamelled sheet metal entities (2, 3), wherein a ground element is at least indirectly coupled with one of said enamelled sheet metal entities (2, 3) for grounding said stack of enamelled sheet metal entities (2, 3), wherein at least one screw (5) with a screw shaft (5.1) is provided through said enamelled sheet metal entities (2, 3), wherein the screw (5) is at least indirectly electrically coupled with the ground element and said screw shaft (5.1) comprises a thread for providing an electric coupling between the enamelled sheet metal entities (2, 3).

The invention relates to a cooking oven comprising at least two entities made of sheet metal (2, 3), each sheet metal entity (2, 3) comprising at least one surface carrying an enamel layer, specifically a vitreous enamel layer, said enamelled sheet metal entities (2, 3) overlapping each other and a screw connection for grounding and coupling said enamelled sheet metal entities (2, 3), wherein a ground element is at least indirectly coupled with one of said enamelled sheet metal entities (2, 3) for grounding said stack of enamelled sheet metal entities (2, 3), wherein at least one screw (5) with a screw shaft (5.1) is provided through said enamelled sheet metal entities (2, 3), wherein the screw (5) is at least indirectly electrically coupled with the ground element and said screw shaft (5.1) comprises a thread for providing an electric coupling between the enamelled sheet metal entities (2, 3).