Abstract: A method for detecting a hot spot at a connector (2) arranged on an electrical line, a heat-sensitive impedance module (4, 4a, 4b, 4c) being arranged at the connector (2), the electrical line and the heat-sensitive impedance module having an overall heat-sensitive impedance, the method comprising the following steps: determining a physical characteristic that is a function of said overall heat-sensitive impedance, and if said physical characteristic deviates from a predetermined reference value, emitting an alarm for detecting and locating a hot spot at said connector.

Abstract: A valve system (1) comprising a valve having a valve stem (50), a valve body (20) and a stuffing box (30) assembled to the valve body, the valve system comprising a washer (60) in contact with the stem (50) and the stuffing box (30), the washer (60) comprising an electrically conductive material.

Abstract: A valve system (1) comprising a valve body (20) and a stuffing box (30) assembled to the valve body (20), the valve body (20) having an internal surface (29) defining an annular groove (21), the annular groove (21) comprising an upper side (22), a lower side (23) and a bottom (24) extending axially between the upper (23) and lower (23) sides, the annular groove (21) forming with the stuffing box (30) an annular cavity (80) for receiving a sealing element (15).

Abstract: A method uses at least: one line made up of at least two conductors insulated by a material whose insulation impedance depends locally on the temperature, the line running through the installation; a reflectometer periodically transmitting a reflectometry signal at one end of the line, the signal being propagated along the line, the reflectometer measuring the echoes received and comparing the amplitudes of the echoes with a given reference; a hot spot being detected when the amplitudes of a given number of successive echoes are greater than the given reference, the echoes being provoked by a local reduction of the value of the insulation impedance.

Abstract: The device comprises at least a first part intended to detect an electrical fault occurring in a network and a second part comprising at least one switch connecting the network to a power supply source, the first part comprising at least one reflectometry detection system capable of being coupled with the network, the system detecting and analyzing the impedance changes occurring in the network, a signal being sent by the system to trigger the opening of the switch when a detected impedance change is considered by the system to be an electrical fault.

Abstract: A method uses at least: one line made up of at least two conductors insulated by a material whose insulation impedance depends locally on the temperature, the line running through the installation; a reflectometer periodically transmitting a reflectometry signal at one end of the line, the signal being propagated along the line, the reflectometer measuring the echoes received and comparing the amplitudes of the echoes with a given reference; a hot spot being detected when the amplitudes of a given number of successive echoes are greater than the given reference, the echoes being provoked by a local reduction of the value of the insulation impedance.

Abstract: The device comprises at least a first part intended to detect an electrical fault occurring in a network and a second part comprising at least one switch connecting the network to a power supply source, the first part comprising at least one reflectometry detection system capable of being coupled with the network, the system detecting and analyzing the impedance changes occurring in the network, a signal being sent by the system to trigger the opening of the switch when a detected impedance change is considered by the system to be an electrical fault.