Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.

Provided is a current branching device for branching a current and supplying the current to a plurality of supply destinations, including a branch member welded to a main conductive wire at an intermediate portion of the main conductive wire for supplying a current to one supply destination, and at least one branch conductive wire welded to the branch member, for supplying a current to another supply destination.

A dry joint for jointing a cable with a wet or semi-wet/semi-dry design to a cable with a wet, semi-wet/semi-dry or dry design and a method of manufacturing a cable dry joint are provided. A cable with a wet or semi-wet/semi-dry design having an end of cable water barrier is also provided. A dry joint water barrier suitable for rendering a joint dry is also provided, where at least one of the jointed cables is of a wet or semi-wet/semi-dry design.

A dry joint for jointing a cable with a wet or semi-wet/semi-dry design to a cable with a wet, semi-wet/semi-dry or dry design and a method of manufacturing a cable dry joint are provided. A cable with a wet or semi-wet/semi-dry design having an end of cable water barrier is also provided. A dry joint water barrier suitable for rendering a joint dry is also provided, where at least one of the jointed cables is of a wet or semi-wet/semi-dry design.

The present invention relates to an interface-forming device (x60) and a method for providing an electrically conductive power transmission interface (x30) on the end surface of a power cable (xOO) having at least two separate wires (x02) being electrically conductive, the cable (xOO) further comprising a reactive compound different from the wires (x02) for providing further features to the power cable (xOO). The method comprises the steps of providing an end section of the power cable (xOO), the end section comprising wires (x02) having wire ends, the end section further having the reactive compound, and successively adding electrically conductive particulates (x67A) onto the end section by bringing the conductive particulates being dispersed in a carrier fluid of a different material than the conductive particulates into contact with the end section. Thereby, cable joining and terminations are achieved of a higher quality.

The present invention relates to an interface-forming device (x60) and a method for providing an electrically conductive power transmission interface (x30) on the end surface of a power cable (xOO) having at least two separate wires (x02) being electrically conductive, the cable (xOO) further comprising a reactive compound different from the wires (x02) for providing further features to the power cable (xOO). The method comprises the steps of providing an end section of the power cable (xOO), the end section comprising wires (x02) having wire ends, the end section further having the reactive compound, and successively adding electrically conductive particulates (x67A) onto the end section by bringing the conductive particulates being dispersed in a carrier fluid of a different material than the conductive particulates into contact with the end section. Thereby, cable joining and terminations are achieved of a higher quality.

A method for improving the properties of a joint between two cable ends having obtaining two cable ends, having uncovered conductors being joined in a connection zone, each cable end also including an uncovered insulation zone including uncovered insulation formed as a cone adjacent the uncovered conductor, covering the conductors with an additional insulation layer, measuring the additional insulation layer and the cones, determining the geometry of the cones and the additional insulation layer based on the measurements, determining a deviation of the geometry from a desired geometry of the cones and the additional insulation layer, where the desired geometry includes a smooth transition between two zones, determining, based on the deviation determination, material to be removed from the cones and the additional insulation layer achieving the desired geometry, and removing the material from the cones and the additional insulation layer.

A method for improving the properties of a joint between two cable ends having obtaining two cable ends, having uncovered conductors being joined in a connection zone, each cable end also including an uncovered insulation zone including uncovered insulation formed as a cone adjacent the uncovered conductor, covering the conductors with an additional insulation layer, measuring the additional insulation layer and the cones, determining the geometry of the cones and the additional insulation layer based on the measurements, determining a deviation of the geometry from a desired geometry of the cones and the additional insulation layer, where the desired geometry includes a smooth transition between two zones, determining, based on the deviation determination, material to be removed from the cones and the additional insulation layer achieving the desired geometry, and removing the material from the cones and the additional insulation layer.

The invention relates to a moisture-protected electrical connection between a flat conductor and an insulated cable with a different cross-section to this and a soldering point, wherein a stripped, exposed cable end is surrounded by a solder foot or a cable end sleeve at the soldering point and is in material contact with an end of the flat conductor, and also a protective body.

A lead assembly includes at plurality of drop line joined to a feeder cable at joints each having a compression lug that is preferably surrounded by undermolding and overmolding. In use, each drop line is connected to a solar array, and the feeder cable is connected to an inverter. In this manner a plurality of solar arrays are electrically coupled together, with a common feeder cable connecting them all to the inverter. A system of the present invention doesn't require a combiner box which is conventionally employed directly upstream of the inverter.