A system for detecting water trees in branching underground electrical cables includes a pulse generator configured to inject a pulse into a first underground cable that branches into a second underground cable and a third underground cable. The system includes a first sensor associated with the first cable, a second sensor associated with the second cable, and a third sensor associated with the third cable. The system includes a control device configured to obtain a first, second, and third signal associated with the first, second and third sensors, respectively. The control device determines a lead-lag relationship between the second and third signals and determines presence of a water tree within at least one of the second and third cable based on the lead-lag relationship. When presence of a water tree is determined, the control device generates a control action associated with repairing or replacing the second and/or third cable.

A cable may include a plurality of twisted pairs of individually insulated conductors, a separator positioned between the twisted pairs, and a jacket formed around the twisted pairs and the separator. The separator may include a longitudinally extending spine positioned between the plurality of twisted pairs, and at least one prong respectively extending from the spine at each of a plurality of longitudinally spaced locations. Additionally, for each pair of adjacent longitudinally spaced locations, the at least one prong extending at a first of the pair of locations may extend in a first set of one or more directions and the at least one prong extending at a second of the pair of locations may extend in a second set of one or more directions that is different than the first set of one or more directions.

A high voltage conductor for transmitting high voltage is provided. The high voltage conductor includes a power wire, a fault detection unit, and a monitoring unit. The power wire is configured for transmission of electrical energy. The fault detection unit is configured for detecting an electromagnetic field emanated by the power wire, and the monitoring unit is configured for detection of degradation in an isolation of the high voltage conductor. The monitoring unit is connected to the fault detection unit and is configured to receive an electrical signal induced in the fault detection unit, which electrical signal is induced as a result of a degradation of the isolation of the high voltage conductor. Thus, degradation of the isolation of the high voltage conductor may be recognized at an early stage.

A current conduction element includes an electrical, conductor and an insulation of the electrical conductor. The insulation includes a light waveguiding unit. Furthermore, a system and method for insulation monitoring are described.

A cable status management system for managing a wire-break progress of a cable used in a managed device is provided with a cable status management device having a cable status storage unit that stores a wire-break progress data indicating the wire-break progress in the cable, a device user-side data management device that belongs to a device user that uses the managed device, a device manufacturer terminal that belongs to a device manufacturer that manufactures the managed device, and a cable manufacturer terminal that belongs to a cable manufacturer that manufactures the cable. At least the device manufacturer terminal and the cable manufacturer terminal are configured to be accessible with the wire-break progress data stored in the cable status storage unit via a network.

A cable status management system for managing a wire-break progress of a cable used in a managed device is provided with a cable status management device having a cable status storage unit that stores a wire-break progress data indicating the wire-break progress in the cable, a device user-side data management device that belongs to a device user that uses the managed device, a device manufacturer terminal that belongs to a device manufacturer that manufactures the managed device, and a cable manufacturer terminal that belongs to a cable manufacturer that manufactures the cable. At least the device manufacturer terminal and the cable manufacturer terminal are configured to be accessible with the wire-break progress data stored in the cable status storage unit via a network.

A power cord includes an outer coating layer. Live, neutral, and ground wires are in the outer coating layer. The live wire includes a core and first insulation layer. Live wire shielding and second insulation layers are successively sheathed outside the core. The neutral wire includes a core and first insulation layer. Neutral wire shielding and second insulation layers are successively outside the neutral wire core. The ground wire includes a core and insulation layer sheathed outside the ground wire core. When the live and neutral wire shielding layers are broken or the live wire and its shielding layer are short-circuited, and the neutral wire and its shielding layer are short-circuited, the leakage protector detects an abnormal signal of the power cord and interrupts the electrical connection of the live and neutral wires, to prevent fire between the live and neutral wire cores after the power cord is broken.

A power cord includes an outer coating layer. Live, neutral, and ground wires are in the outer coating layer. The live wire includes a core and first insulation layer. Live wire shielding and second insulation layers are successively sheathed outside the core. The neutral wire includes a core and first insulation layer. Neutral wire shielding and second insulation layers are successively outside the neutral wire core. The ground wire includes a core and insulation layer sheathed outside the ground wire core. When the live and neutral wire shielding layers are broken or the live wire and its shielding layer are short-circuited, and the neutral wire and its shielding layer are short-circuited, the leakage protector detects an abnormal signal of the power cord and interrupts the electrical connection of the live and neutral wires, to prevent fire between the live and neutral wire cores after the power cord is broken.

The present invention refers to the field of industrial automation, with particular reference to industrial robotics and handling in general. In this field, in the present case, cable chains or sheaths for transporting and containing cables, cable bundles or flexible hoses are particularly relevant, said cables or hoses being led to the robotic or handling systems in which they are used. It is well known to those skilled in the art that the cables or hoses transported and housed in sheaths or chains are protected from external agents that could cause abrasions or breakages, but are still subjected to mutual rubbing and rubbing against the inner wall of said sheaths or chains. Moreover, the environments in which said cable means are used are harsh environments, so that the cable sheaths or chains are also subjected to shocks and strong external stresses and said stresses may, and often do, reverberate and cause equivalent damages to the cables or hoses they contain. The object of the present invention is a monitoring and alert system to check the actual state of use and wear of an industrial cable.

The present invention refers to the field of industrial automation, with particular reference to industrial robotics and handling in general. In this field, in the present case, cable chains or sheaths for transporting and containing cables, cable bundles or flexible hoses are particularly relevant, said cables or hoses being led to the robotic or handling systems in which they are used. It is well known to those skilled in the art that the cables or hoses transported and housed in sheaths or chains are protected from external agents that could cause abrasions or breakages, but are still subjected to mutual rubbing and rubbing against the inner wall of said sheaths or chains. Moreover, the environments in which said cable means are used are harsh environments, so that the cable sheaths or chains are also subjected to shocks and strong external stresses and said stresses may, and often do, reverberate and cause equivalent damages to the cables or hoses they contain. The object of the present invention is a monitoring and alert system to check the actual state of use and wear of an industrial cable.