Water pump with an impeller driven by an electrical machine comprising a housing cap and a volute with an input and an output and a boot hosting a stator and a rotor of the electrical machine and an electronic board mounted at the side apart from the impeller and covered by the cap housing, characterized in that the stator stack is over molded with a first plastic material and at least the stator stack, the wires and pins are over molded with a second plastic material to form a cylindrical ring boot and a heat sink that seals a cylindrical opening of the boot.

A fitting, and method for mounting the fitting, to a water tank including a wall defining an inlet opening. The fitting comprising a solar shield for mounting to an edge of the wall, the edge defining the inlet opening. The solar shield including a base defining a lower region; at least a first arm extending upwardly from the base, the first arm having a portion that overlies an external surface of the tank when the fitting is fitted to the tank; at least a second arm extending upwardly from the base; and, a solar shield adapted to allow fluid to pass located, wherein the solar shield is adapted to snap fit into the inlet opening when the fitting is fitted to the tank without the use of additional fasteners, joiners and/or adhesives.

A terminal box for a centrifugal pump is releasably connectable to an electronic extension module by a locking element. A pluggable electric interface extends through an opening from an underside of the base plate into the terminal box to electrically connect the pump control for establishing a data link. The locking element is slidable in the cavity and is movable manually from a first position to a second position and by a tool from this second position to this first position. It also has on a first side a resilient latch engaging with either a first recess of the terminal box and holding the locking element in the first position, or a second recess of the terminal box holding the locking element in the second position. Thus the locking element frees the module for plugging-in in the first position, and arrests the module in the second position.

A plug-in electronic expansion module for pump electronics of a centrifugal pump for expanding the pump electronics with at least one additional function has a housing having a lower face and connecting formations thereon for attachment to a pump housing of the pump electronics. Electronics in the module housing provide the additional function. A base is provided on the lower face, and an electrical interface connected to the pump electronics includes a flat support projecting tongue-like from the base on the lower face of the module housing through an opening in the pump housing and carrying contact-forming electrical traces.

The present disclosure provides a micro water pump, including: a pump body having a cavity, an inlet communicated with the cavity, and an outlet communicated with the cavity; and a drive mechanism engaged with the pump s body for driving liquid from the inlet into the cavity and discharge from the outlet. The pump body includes a base and an upper cover fixed to the base for cooperatively forming the cavity by ultrasonic welding. By virtue of the configuration, improved heat-dissipation performance is performed.

An electrical submersible pump assembly has a motor lead extending alongside the pump housing to the motor for supplying electrical power to the motor. At least one standoff wedges between the pump housing and the motor lead. The standoff has a channel in which the motor lead is received. The standoff has legs extending inward from the channel into contact with the pump housing. The legs space the channel of the standoff from the pump housing by a gap to enable well fluid flow between the motor lead and the pump housing.

A pump device may include a motor, an impeller to turn by use of drive power of the motor, and a circuit board for controlling the motor; the pump device being able to become low-profile in an axial direction of a turning center shaft as a turning center of the impeller. In a pump device, there are formed a wall part surrounding a circuit board and a substrate contacting surface, which contacts a lower surface of the circuit board in order to locate circuit board, in a pump case. In the wall part, there is shaped a cutout part that is cut out downward from an upper end surface of the wall part, and meanwhile a leading wire, whose one end side is soldered to the circuit board, passes through the cutout part in such a way as to be drawn out to an outer side of the wall part. In the pump device, a cutout bottom part, which is a lower end part of the cutout part, and the leading wire do not contact each other so as to be detached from each other.

Embodiments of the invention provide an electrically-powered submersible pump. The pump has a pump housing, a ring-style terminal block including an annular component having a plurality of terminals, a motor contained within the pump housing, and a power source in communication with at least one of the plurality of terminals. Each of the plurality of terminals is spaced apart about the annular component and at least one terminal of the plurality of terminals extends outwardly from the annular component. The motor in communication with at least one of the plurality of terminals.

An electric submersible pumping system includes a motor, a pump driven by the motor, and a cable that provides electrical power to the motor. The cable includes a conductor and an insulator surrounding the conductor. The insulator includes a first layer surrounding the conductor and a second layer surrounding the first layer. The insulator may include an H.sub.2S scavenger and an H.sub.2S reactant in the first or second layers surrounding the conductor. The cable optionally includes a sub-insulator layer that includes a metal or nitride coating applied directly to the conductor.

Systems and methods for authentication may include balancing an unbalanced power cable using a transformer that has one or more phases by selecting a voltage on a tap handle; disposing a first bushing on one or more phases at a different voltage than the selected voltage; and balancing the unbalanced power cable based on the disposition of the first bushing on the one or more phases at the different voltage.