A motor includes a rotor, a stator having coils, a connector for supplying electrical power to the coils, and a resin sealing member. The resin sealing member comprises an opposite-to-output side sealing part and a connector sealing part covering the connector. The connector comprises a frame part into which the cable side connector is to be inserted, and the opposite-to-output side sealing part comprises a first protruded part and a second protruded part. A tip end face of the first protruded part and a tip end face of the second protruded part are located on one imaginary face intersecting the rotation center line, a tip end on the opposite-to-output side of the frame part is located on the output side with respect to the imaginary face, and the second protruded part is provided at a position closer to the frame part between the first protruded part and the frame part.

A motor includes a connector detachably connected with an external cable and a resin sealing member which covers the connector. The connector includes a frame part into which a cable side connector is to be inserted and a step part on an outer peripheral face of the frame part. A shape of the step part when viewed in the inserting direction is a ring shape. The resin sealing member covers the connector from the front side and exposes an end face of the step part of the frame part and a portion of the frame part on the rear side to the step part end face to the outside, and an outer peripheral face of the resin sealing member is provided with an outer peripheral face portion which surrounds the frame part and is continuously connected with the step part end face without a step.

A pothead cable seal for electric submersible motors. An electric submersible motor pothead system including a pothead that couples a power cable to an electric submersible motor operable in well fluid, the pothead including a finger seal including a finger around each phase of the power cable and a radial flange, a compression plate that exerts a radial force on each phase from an axial load provided by the compression plate against the radial flange, a seal seat including sockets that receive each finger; a space extending between a portion of an outer diameter of each finger and a flared inner diameter of the socket of the seal seat, and a seal ring extending circumferentially around an outer diameter of each finger and tangent to the flange, the seal ring contacting the flared inner diameter of the seal seat and closing the space to the ingress of well fluid.

An assembly includes a first conductor, a tube extending along the first conductor between first and second ends of the first conductor, and an electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor. Another assembly includes a plurality of conductors, a first tube extending along at least one of the conductors, and an electrically-insulating barrier enclosing the conductors and the first tube in which the barrier maintains spacing between the first tube and one or more adjacent conductors. In each assembly, the tube is configured to permit a fluid to flow therethrough. A method of manufacturing a feeder cable includes providing conductors that extend between first and second lugs of each conductor, enclosing the conductors within an electrically-insulating layer, and forming a cooling passage within the electrically-insulating layer that extends along one of the conductors.

A system (100, 200) is presented. The system includes a fluid lifting device (102, 202) located inside a well (106, 206), and comprising an electrical motor (108, 208), a three phase cable (114, 214) for coupling the fluid lifting device to a power source (112, 212), at least one high sensitivity differential current transformer (104, 203, 204) for generating imbalance signals (128, 227) representative of an imbalance current in at least one of the electrical motor and the three phase cable, wherein the at least one high sensitivity differential current transformer is disposed such that the at least one high sensitivity differential current transformer surrounds at least a portion of the three phase cable, and a processing subsystem (136, 236) for monitoring the health of at least one of the fluid lifting device and the three phase cable based on the imbalance signals.

An explosion proof motor, pump system, and method is provided comprising a motor housing having a circular first end spaced by a cylindrical wall to a circular second end and a cavity formed therebetween within the cylindrical wall. The circular second end formed by a bell wall. The cylindrical first end and circular second end sharing a longitudinal axis that extends concentrically from the first and second ends. A pump housing having a cavity for nesting for rotational movement a rotor comprising a plurality of blades and vanes. The rotor couples to a motor shaft of the motor during use. The cavity is further formed by the cylindrical wall wherein the cylindrical wall has an inner surface and an outer surface such that the outer surface runs parallel longitudinally about the longitudinal axis and the inner surface runs transversely about the longitudinal axis.

A stator may include a stator yoke including one or more yoke portions extending along a circumferential direction of the stator yoke; and a cover configured of resin. The stator yoke may include: a contact part at which an end surface of one yoke portion among the one or more yoke portions in the circumferential direction contacts the other end surface of the one yoke portion in the circumferential direction; a first groove extending along an axial direction of the stator yoke in a vicinity of the contact part; and a second groove extending along the axial direction and disposed at a position spaced father away from the contact part than the first groove. The cover may include a filling that fills the first groove, and the second groove may be hollow.

A hanging bracket for supporting a suspended apparatus and a control unit housing includes a base having a first end and a second end. The first end includes a first surface and a first screw boss therethrough, and the second end includes a second surface and a second screw boss therethrough. The bracket also includes a support portion vertically spaced from the base, where the support portion adapted to support the suspended apparatus, and a neck extending between the base and the support portion. At least the first surface of the first end of the base, the second surface of the second end of the base, and the first and second screw bosses collectively form an interface configured for juxtaposition with complementary surfaces and screw holes of the control unit housing.

A cover end of a fuel pump is formed by resin molding and has a tubular portion, which holds a bearing that is placed along a central axis of the tubular portion and rotatably supports one end portion of a shaft of a motor arrangement. Furthermore, three terminals, which supply three-phase electric power received from an outside to windings on a phase-by-phase basis, are insert molded in the cover end. In the cover end, a first transverse passage, which is formed between the first terminal and the second terminal in a circumferential direction, and a second transverse passage, which is formed between the second terminal and the third terminal in the circumferential direction, are configured into a form of V-shape, which diverges in a radially outer direction, in a view taken in an axial direction.

The motor of the invention includes the resin sealing member which covers a stator and a circuit board. The stator includes a stator core for winding a driving coil through an insulation member, and a terminal pin secured to the insulation member. The insulation member includes a press fitting portion for pressing and securing a portion of the terminal pin on a side of a second direction, whereas a portion of the terminal pin on a side of a first direction is soldered to the circuit board. A stopper portion is formed on a second direction end of the terminal pin. The stopper portion contacts a surface of the press fitting portion in the second direction to prevent the terminal pin from falling off in the first direction.