A power receiving apparatus includes a determination unit and a display unit. The determination unit determines whether or not each of a power transmitting apparatus and a cable connected to the power receiving apparatus meets a predetermined condition relating to safety of power transmission. The display unit displays first information indicating that the power transmitting apparatus does not meet the predetermined condition in a case where the power transmitting apparatus does not meet the predetermined condition. The display unit displays second information indicating that the cable does not meet the predetermined condition in a case where the cable does not meet the predetermined condition.

A power receiving apparatus includes a determination unit and a display unit. The determination unit determines whether or not each of a power transmitting apparatus and a cable connected to the power receiving apparatus meets a predetermined condition relating to safety of power transmission. The display unit displays first information indicating that the power transmitting apparatus does not meet the predetermined condition in a case where the power transmitting apparatus does not meet the predetermined condition. The display unit displays second information indicating that the cable does not meet the predetermined condition in a case where the cable does not meet the predetermined condition.

A diagnostic system includes a fan control circuit coupled to an electric fan and a microcontroller, and a sense line coupled to the fan control circuit and the microcontroller. The fan control circuit outputs a fan command sense signal at a duty cycle through the sense line to the microcontroller. A tachometer generates a tachometer signal at a frequency indicative of the rotational speed of the electric fan. A fan tachometer circuit receives the tachometer signal and outputs the tachometer sense signal at a frequency to the microcontroller in response to the tachometer signal. The microcontroller sets a second diagnostic flag to an error value indicating that the sense line has impaired operation if the frequency of the tachometer sense signal is within a desired frequency range, and a first diagnostic flag is equal to a first error value.

A device (10) for detecting breakage of at least one electrical cable (12) has the at least one electrical cable (12), a wireless sensor (14) connected to the at least one electrical cable (12), and at least one power supply unit (18) supplying power to the wireless sensor (14). The at least one power supply unit (18) has a means (20) of applying a predetermined potential to the at least one electrical cable (12), and the wireless sensor (14) is designed to detect either the predetermined potential, which is an indicator of the integrity of the at least one electrical cable (12), or a floating potential, which is an indicator of the breakage of the at least one electrical cable (12).

A device (10) for detecting breakage of at least one electrical cable (12) has the at least one electrical cable (12), a wireless sensor (14) connected to the at least one electrical cable (12), and at least one power supply unit (18) supplying power to the wireless sensor (14). The at least one power supply unit (18) has a means (20) of applying a predetermined potential to the at least one electrical cable (12), and the wireless sensor (14) is designed to detect either the predetermined potential, which is an indicator of the integrity of the at least one electrical cable (12), or a floating potential, which is an indicator of the breakage of the at least one electrical cable (12).

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 power conversion apparatus includes a power conversion circuit configured to convert DC power into three-phase AC power; and a control device configured to generate a two-phase negative-phase current from a three-phase AC current output from the power conversion circuit, and to detect an open phase on an output side of the power conversion circuit based on a magnitude of an amplitude of the two-phase negative-phase current. The control device may be configured to determine an occurrence of the open phase when the magnitude of the amplitude of the two-phase negative-phase current increases, and an electric current of at least one phase of the three-phase AC current decreases.

A power cable includes a cable core, a jacket and an outermost semiconductor layer. The cable core includes at least one conductor, an insulating system thereof, and at least one metallic screen. The jacket surrounds the cable core and includes an inner jacket layer and an outer jacket layer. The outermost semiconducting layer surrounds the outer jacket layer in direct contact thereto. The power cable further includes a test semiconducting layer radially external to the inner jacket layer, radially internal to the outer jacket layer, and directly contacting them. A power cable system, and a jacket integrity testing method for a power cable, are also provided.

A power cable includes a cable core, a jacket and an outermost semiconductor layer. The cable core includes at least one conductor, an insulating system thereof, and at least one metallic screen. The jacket surrounds the cable core and includes an inner jacket layer and an outer jacket layer. The outermost semiconducting layer surrounds the outer jacket layer in direct contact thereto. The power cable further includes a test semiconducting layer radially external to the inner jacket layer, radially internal to the outer jacket layer, and directly contacting them. A power cable system, and a jacket integrity testing method for a power cable, are also provided.

A device for simulating intermittent arc grounding faults in a power distribution network includes a sliding rail, a first and a second support frames, an insulated electrode disk, and an electrode disk motor. The first support frame is fixed on the left side of the slide rail, and the position of the second support frame relative to the first support frame can be adjusted through the sliding rail. The second support frame is provided with an electrode disk motor for driving the insulated electrode disk to rotate. An upper and a lower conductive bars are installed on the first support frame, their adjacent ends provided with an upper and a lower arc-shaped conductor sheets, and the insulated electrode disk having two circles of conductive pillars is located between the conductor sheets. The conductor sheets are respectively installed on the side of the conductive bars close to the conductive pillar.