A submersible, high-voltage electrical connector that includes a female connector and a male connector. The female connector has an interior chamber and a conduit configured to connect the interior chamber to an evacuation pump. The male connector is configured to fit within the chamber of the female connector. The conduit of the female connector is further configured to, when the male connector and the female connector are mated, substantially evacuate any liquid from the chamber of the female connector.

An electrical interconnection system with an adapter mounted in an opening within a connector interface of a panel of an electronic enclosure is described. A sealing member may be used to prevent passage of foreign matter, such as liquid, gas or dust particles into the enclosure and into the mating region between the adapter and a mating plug connector. The sealing member may comprise a base and a sidewall configured to wrap around an outer border of the adapter. The sealing member may be configured to form a first sealing interface with the panel, and a second sealing interface with the plug connector. The first and second sealing interfaces may be orthogonal to each other. The sealing member may be made of an elastic material.

Systems and methods for testing downhole power cables wherein such systems and methods utilize a mounting bracket having a PEEK insulator extending from a first face of said bracket and at least one flexible lead extending from a second face of said bracket. Such systems and methods may accommodate three such flexible leads that are configured to interface with power cables. A shunting block may be incorporated in a protective cap configured to fit over the PEEK insulator extension from said first face of said bracket.

A connector used in underwater environments includes a male connector with a sensing terminal and two power terminals, a female connector with a sensing terminal block and two power terminal blocks, and an elastic gasket set between the male connector and the female connector. When the male connector and the female connector are plugged into each other, and the male and female connectors squeeze the elastic gasket to form a large amount of deformation, the sensing terminal and the sensing terminal block are in contact with each other. When the male and female connectors squeeze the elastic gasket to form a small deformation state, the sensing terminal and the sensing terminal block are separated from each other, and the power terminals and the power terminal blocks are in contact with each other, thereby forming a waterproof protection mechanism.

A connector used in underwater environments includes a male connector with a sensing terminal and two power terminals, a female connector with a sensing terminal block and two power terminal blocks, and an elastic gasket set between the male connector and the female connector. When the male connector and the female connector are plugged into each other, and the male and female connectors squeeze the elastic gasket to form a large amount of deformation, the sensing terminal and the sensing terminal block are in contact with each other. When the male and female connectors squeeze the elastic gasket to form a small deformation state, the sensing terminal and the sensing terminal block are separated from each other, and the power terminals and the power terminal blocks are in contact with each other, thereby forming a waterproof protection mechanism.

Disclosed is a passively cooled waterproof propulsion unit for a watercraft is provided comprising a substantially cylindrical housing including an outer wall having an external surface and an internal surface. The cylindrical housing includes a first end cap attached at a first end of the housing. The first end cap includes an attachment interface configured to be mounted to a strut of a watercraft such that at least a portion of the external surface of the outer wall of the housing is configured to contact a fluid surrounding the housing when the watercraft operates within the fluid. The propulsion unit further includes an electric motor disposed with in the housing and an electronic speed controller. The electronic speed controller is electrically coupled to the electric motor and configured to provide electrical power to the electric motor to operate the electric motor.

An electrical feedthrough assembly has a lower assembly having a first end and a second end. The lower assembly includes an outer body with a lower housing and an upper housing disposed within a bore of the outer body and a first conductor extending from the lower housing to the upper housing. Additionally, the lower housing extends axial outward from the outer body to form the first end and the upper housing extends axial outward from the outer body to form the second end. Further, the electrical feedthrough assembly has an upper assembly having body extending from a first end to a second end. The second body includes a pin end at the first end inserted into an opening of the second end of the lower assembly. A second conductor is disposed within the body. A piston is disposed within the body configured to move the second conductor.

An electrical feedthrough assembly has a lower assembly having a first end and a second end. The lower assembly includes an outer body with a lower housing and an upper housing disposed within a bore of the outer body and a first conductor extending from the lower housing to the upper housing. Additionally, the lower housing extends axial outward from the outer body to form the first end and the upper housing extends axial outward from the outer body to form the second end. Further, the electrical feedthrough assembly has an upper assembly having body extending from a first end to a second end. The second body includes a pin end at the first end inserted into an opening of the second end of the lower assembly. A second conductor is disposed within the body. A piston is disposed within the body configured to move the second conductor.

A galvanic corrosion-proof underwater electrical interconnect comprising a plug assembly and a receptacle assembly. The plug assembly comprising a plug insert body having conductive terminals mounted within a plug shell, a coupling nut, a waterproof cable having wires connected to the conductive terminals, and a rubber overmold formed around a portion of the plug shell and cable forming a water-tight seal therebetween. The receptacle assembly comprises a first metal tubular member having a threaded portion to threadedly engage the coupling nut, a second metal tubular member separated from the first tubular member by a non-metallic outer body positioned around and between the tubular members, a receptacle insert having conductive terminals adapted to contact the plug conductive terminals. The plug shell, coupling nut and first metal tubular member are made of metal alloys having the same galvanic potential.

A galvanic corrosion-proof underwater electrical interconnect comprising a plug assembly and a receptacle assembly. The plug assembly comprising a plug insert body having conductive terminals mounted within a plug shell, a coupling nut, a waterproof cable having wires connected to the conductive terminals, and a rubber overmold formed around a portion of the plug shell and cable forming a water-tight seal therebetween. The receptacle assembly comprises a first metal tubular member having a threaded portion to threadedly engage the coupling nut, a second metal tubular member separated from the first tubular member by a non-metallic outer body positioned around and between the tubular members, a receptacle insert having conductive terminals adapted to contact the plug conductive terminals. The plug shell, coupling nut and first metal tubular member are made of metal alloys having the same galvanic potential.