An electromagnetic relay includes a fixed contact, a movable contact corresponding to the fixed contact, a movable element that retains the movable contact and moves in a contacting direction and a separating direction relative to the fixed contact, an axial core coupled to the movable element, a movable core coupled to the axial core to move in the contacting direction and the separating direction relative to a movement of the axial core, a driving part that drives the movable core in the contacting direction, an urging part that exerts force to the axial core in the separating direction, and a constraining part that constrains the relative movement of the axial core in the separating direction.

An electromagnetic relay includes a fixed contact, a movable contact corresponding to the fixed contact, a movable element that retains the movable contact and moves in a contacting direction and a separating direction relative to the fixed contact, an axial core coupled to the movable element, a movable core coupled to the axial core to move in the contacting direction and the separating direction relative to a movement of the axial core, a driving part that drives the movable core in the contacting direction, an urging part that exerts force to the axial core in the separating direction, and a constraining part that constrains the relative movement of the axial core in the separating direction.

A relay for a high voltage circuit comprises a main coil and a first armature, wherein the first armature is located in the high voltage circuit and is correspondingly in a position to open and close the high voltage circuit in response to power down and power up of the main coil; a secondary coil that cooperates with the first armature and a driving circuit that supplies power to the secondary coil, wherein the driving circuit is powered by a high voltage supply of the high voltage circuit, the secondary coil is powered up to generate additional electromagnetic force that places the first armature in the closed position when the driving circuit is closed; and a second armature located in the driving circuit, and is correspondingly in a position to open or close the driving circuit in response to power down and power up of the main coil.

A relay for a high voltage circuit comprises a main coil and a first armature, wherein the first armature is located in the high voltage circuit and is correspondingly in a position to open and close the high voltage circuit in response to power down and power up of the main coil; a secondary coil that cooperates with the first armature and a driving circuit that supplies power to the secondary coil, wherein the driving circuit is powered by a high voltage supply of the high voltage circuit, the secondary coil is powered up to generate additional electromagnetic force that places the first armature in the closed position when the driving circuit is closed; and a second armature located in the driving circuit, and is correspondingly in a position to open or close the driving circuit in response to power down and power up of the main coil.

A method for diagnosing the state of wear of an electrical switching unit including an electrical unit monitoring phase. The monitoring phase uses learning data loaded previously and representative of the type of electrical unit, and initialization data corresponding to the unit to be monitored and stored in an initialization phase. The monitoring phase includes the measurement and the acquisition of a measurement curve on opening the electrical unit, the determination of the value of local descriptors of the measurement curve as a function of values of the measurement curve, of initialization data and of learning data, the determination of the positioning of local descriptor values, the determination of an overall state class as a function of the positioning values. The device and the electrical unit implement the method.

A method for diagnosing the state of wear of an electrical switching unit including an electrical unit monitoring phase. The monitoring phase uses learning data loaded previously and representative of the type of electrical unit, and initialization data corresponding to the unit to be monitored and stored in an initialization phase. The monitoring phase includes the measurement and the acquisition of a measurement curve on opening the electrical unit, the determination of the value of local descriptors of the measurement curve as a function of values of the measurement curve, of initialization data and of learning data, the determination of the positioning of local descriptor values, the determination of an overall state class as a function of the positioning values. The device and the electrical unit implement the method.

A relay for a high voltage circuit comprises a main coil and a first armature, wherein the first armature is located in the high voltage circuit and is correspondingly in a position to open and close the high voltage circuit in response to power down and power up of the main coil; a secondary coil that cooperates with the first armature and a driving circuit that supplies power to the secondary coil, wherein the driving circuit is powered by a high voltage supply of the high voltage circuit, the secondary coil is powered up to generate additional electromagnetic force that places the first armature in the closed position when the driving circuit is closed; and a second armature located in the driving circuit, and is correspondingly in a position to open or close the driving circuit in response to power down and power up of the main coil.

A relay for a high voltage circuit comprises a main coil and a first armature, wherein the first armature is located in the high voltage circuit and is correspondingly in a position to open and close the high voltage circuit in response to power down and power up of the main coil; a secondary coil that cooperates with the first armature and a driving circuit that supplies power to the secondary coil, wherein the driving circuit is powered by a high voltage supply of the high voltage circuit, the secondary coil is powered up to generate additional electromagnetic force that places the first armature in the closed position when the driving circuit is closed; and a second armature located in the driving circuit, and is correspondingly in a position to open or close the driving circuit in response to power down and power up of the main coil.

A method for diagnosing the state of wear of an electrical switching unit including an electrical unit monitoring phase. The monitoring phase uses learning data loaded previously and representative of the type of electrical unit, and initialization data corresponding to the unit to be monitored and stored in an initialization phase. The monitoring phase includes the measurement and the acquisition of a measurement curve on opening the electrical unit, the determination of the value of local descriptors of the measurement curve as a function of values of the measurement curve, of initialization data and of learning data, the determination of the positioning of local descriptor values, the determination of an overall state class as a function of the positioning values. The device and the electrical unit implement the method.

A method for diagnosing the state of wear of an electrical switching unit including an electrical unit monitoring phase. The monitoring phase uses learning data loaded previously and representative of the type of electrical unit, and initialization data corresponding to the unit to be monitored and stored in an initialization phase. The monitoring phase includes the measurement and the acquisition of a measurement curve on opening the electrical unit, the determination of the value of local descriptors of the measurement curve as a function of values of the measurement curve, of initialization data and of learning data, the determination of the positioning of local descriptor values, the determination of an overall state class as a function of the positioning values. The device and the electrical unit implement the method.