A “safe grounding apparatus” (SGA) for safely grounding or neutralizing the electrical conductors for permanent magnet motor (PMM) powered artificial lift systems and methods of practicing the same are disclosed. The SGA of the present invention ameliorates some of the dangers associated with PMM's. Methods of shorting, grounding, testing and monitoring the electrical conductors of a permanent magnet motor in order to safely manipulate the conductors are also disclosed.

The described connector assemblies are useful in wire-to-board systems. Some assemblies include a free-end connector that is attached to a twin-ax cable, and a fixed-end connector that is attached to a board. Embodiments include a free-end terminal set including a first signal terminal, a second signal terminal and a ground plate. The ground plate has a horseshoe shape and provides a ground terminal on opposing sides of the first and second signal terminals. Additionally, embodiments include a locking system between the free-end connector and fixed-end connector, and lead designs for the fixed-end connector utilizing a similar horseshoe shape as that used for the ground plate of the free-end connector.

A paddle card includes a printed circuit board and a twin-axial cable. The PCB includes a first signal pad on a top surface of the PCB and a second signal pad on a bottom surface of the PCB. The second signal pad is directly below the first signal pad. The twin-axial cable includes a first signal conductor coupled to the first signal pad and a second signal conductor coupled to the second signal pad.

The described connector assemblies are useful in wire-to-board systems. Some assemblies include a free-end connector that is attached to a twin-ax cable, and a fixed-end connector that is attached to a board. Embodiments include a free-end terminal set including a first signal terminal, a second signal terminal and a ground plate. The ground plate has a horseshoe shape and provides a ground terminal on opposing sides of the first and second signal terminals. Additionally, embodiments include a locking system between the free-end connector and fixed-end connector, and lead designs for the fixed-end connector utilizing a similar horseshoe shape as that used for the ground plate of the free-end connector.

A single-row electrical wire structure includes a first circuit board and a wire assembly. A board-to-board connector is on the first circuit board. The first circuit board includes a first group of contacts arranged into a single row. A distance between center portions of adjacent two contacts of the first group of contacts forms a width. The wires assembly includes a plurality of high-speed signal pairs and at least one low-speed signal pair respectively connected to the first group of contacts. A first spacing between a contact in the first group of contacts corresponding to a first high-speed signal pair of the high-speed signal pairs and a contact in the first group of contacts corresponding to a second high-speed signal pair of the high-speed signal pairs adjacent to the first high-speed signal pair is at least equal to or greater than 2 times of the width.

A ground shield includes a plurality of contact members configured to contact the ground contacts of a column of contacts of an electrical connector, so as to electrically common the grounds to each other.

A connector system includes a housing with a paddle card. One side of the paddle card includes a plurality of rows of signal terminations. Another side of the paddle card includes a single row of cable terminations. Cable management members may be used to support the rows of signal terminations. A shield member may be used to improve the electrical performance of the signal terminations.

An electrical connection device comprises a cable, a ferrule, and a first electrical contact. The cable has an outer conductor surrounding an inner conductor. The ferrule is mechanically connected to the outer conductor. The first electrical contact is electrically connected to the inner conductor.

A connector assembly comprising a housing, first and second circuit boards, and substantially flat cables. The housing includes a mating end for mating with a mating connector and an opposite cable end for receiving a cable. The first and second circuit boards are disposed inside the housing. Each circuit board includes a plurality of conductive front pads disposed closer to the mating end of the housing and a plurality of conductive rear pads disposed closer to the cable end of the housing and electrically connected to the front pads. At least one front pad of the first circuit board faces, aligns with, and is electrically connected to, at least one rear pad of the second circuit board. The substantially flat cables include a plurality of conductors. The uninsulated front ends of the conductors of the cables terminate at the corresponding rear pads of the first circuit board.

A socket connector assembly for a communication system includes a socket connector having a socket housing holding socket contacts having deflectable spring beams. The socket connector assembly includes a cable assembly coupled to the socket connector having an outer housing holding a paddle card with paddle card contacts interfacing with the separable mating interfaces of the socket contacts. The cable assembly includes cables terminated to the paddle card coupled to corresponding paddle card contacts. The socket connector assembly includes a spring plate coupled to the outer housing secured to the host circuit board to press the cable assembly downward toward the host circuit board to compress the deflectable spring beams of the socket contacts.