Abstract: A method for estimating the state of an electrical switching apparatus, the switching apparatus including separable electrical contacts configured to be coupled to an electrical conductor, and an electromagnetic actuator, controlled by a control circuit and including a movable core, coupled to the separable contacts, and a coil, which is passed through by a coil current. The method: includes measuring, by means of sensors associated with the coil, values of the coil current in a time interval, while the electromagnetic actuator is kept in a stable and in particular closed position, and computing, by means of an electronic control device of the switching apparatus, one or more values of a magnetic flux of the coil from the measured coil-current values, and using coil-voltage and coil-resistance values known beforehand.

Abstract: Embodiments of the present disclosure provide a control method and a control device for an electric switch, and an electric switch. The control method includes: obtaining a voltage signal representing a control voltage, the control voltage input to the electric switch and applied to an electromagnetic assembly of the electric switch via a regulation device of the electric switch; determining, based on the voltage signal obtained, a target control parameter for the electromagnetic assembly, the target control parameter comprising at least one of a target voltage and a target current; and generating, based on the target control parameter determined, a control signal for the regulation device, to cause the electromagnetic assembly to drive a movable contact of the electric switch to contact a static contact of the electric switch. The solution of the present disclosure can effectively reduce wear of contact points of contacts, to thus prolong the service life of the electric switch.

Abstract: An error amplifier including a differential pair circuit, a resistive device, a low voltage capacitor, and a protection device. The differential pair circuit is coupled between an upper supply node and a lower supply node with first and second intermediate nodes and is responsive to a difference between a reference voltage and a feedback voltage for driving a control voltage developed on the second intermediate node. The resistive device is coupled between the second intermediate node and a low voltage node, and the low voltage capacitor and the protection device are coupled between the low voltage node and the lower supply node. The protection device is dynamically controlled by the first intermediate node to prevent the low voltage node from exceeding a predetermined maximum level. The protection device may be a transistor having size parameters based on voltage characteristics of the first intermediate node during expected operating conditions.

Abstract: A method for mounting an interlock module between two contactors, including: providing a first contactor having a first mounting surface and a first movable iron core assembly and a second contactor having a second mounting surface and a second movable iron core assembly, and placing the first mounting surface and the second mounting surface face to face; providing the interlock module comprising a first slider, a second slider and a housing formed separately from the first slider and the housing, an interlocking portion being mounted in the housing for interacting with the first slider and the second slider; connecting the first slider to the first movable iron core assembly of the first contactor; connecting the second slider to the second movable iron core assembly of the second contactor; assembling the housing to the first slider and the second slider; and fixing the housing.

Abstract: The present disclosure relates to contactor, and device and method for controlling same. A control device for a contactor comprises a high side control unit, a first low side control unit, a second low side control unit, a freewheeling unit, and a controller. The high side control unit is configured to switch on or switch off the connection of the first magnetic unit and the second magnetic unit of the contactor with a power supply. The first low side control unit is configured to switch on or switch off the connection of the first magnetic unit with the reference voltage node. The second low side control unit is configured to switch on or switch off the connection of the second magnetic unit with the reference voltage node. The freewheeling unit is connected across a branch comprising a first magnetic unit and a first low side control unit and connected across a branch comprising a second magnetic unit and a second low side control unit.

Abstract: Embodiments of the present disclosure relate to a control circuit for a contactor and a control method thereof.

Abstract: Embodiments of the present disclosure relate to a control device and method for a contactor. The control device comprises a first high-side control unit, a second high-side control unit, a first low-side control unit and a second low-side control unit. The first high-side control unit and the second high-side control unit respectively connect a first magnetic unit and a second magnetic unit of the contactor to a power supply. The first low-side control unit is connected between the first magnetic unit and a reference voltage node, and the second low-side control unit is connected between the second magnetic unit and the reference voltage node. The control device further comprises a freewheel unit connected to the first magnetic unit and the second magnetic unit. The control device further comprises a controller.

Abstract: A modular contactor. The modular contactor includes a driving module (1), an intermediate connection module (2), a breaking module (3), an upper application interface module (4), and a lower application interface module (5); the driving module (1) is detachably connected to a first side of the intermediate connection module (2); the breaking module (3) is detachably connected to a second side of the intermediate connection module (2) ; the upper application interface module (4) is detachably connected to the top of the breaking module (3) so as to be electrically connected to upper static contacts of the multiple breaking units; the lower application interface module (5) is detachably connected to the bottom of the breaking module (3) so as to be electrically connected to lower static contacts of the multiple breaking units.

Abstract: The present disclosure relates to contactor, and device and method for controlling same. A control device for a contactor comprises a high side control unit, a first low side control unit, a second low side control unit, a freewheeling unit, and a controller. The high side control unit is configured to switch on or switch off the connection of the first magnetic unit and the second magnetic unit of the contactor with a power supply. The first low side control unit is configured to switch on or switch off the connection of the first magnetic unit with the reference voltage node. The second low side control unit is configured to switch on or switch off the connection of the second magnetic unit with the reference voltage node. The freewheeling unit is connected across a branch comprising a first magnetic unit and a first low side control unit and connected across a branch comprising a second magnetic unit and a second low side control unit.

Abstract: The present disclosure relates to a method for resetting life diagnosis alarm of a contact of a contactor, including the following steps: Step A: detecting a reset signal by a microcontrol unit; Step B: when the microcontrol unit has detected the reset signal, checking the state of the diagnosis alarm through the microcontrol unit; and when the diagnosis alarm is in an active state, the microcontrol unit: Step C: controlling the indicator to give a first indication signal for confirming a reset operation of the diagnosis alarm; Step D: resetting life diagnosis data; Step E: controlling the opening and closing of the contact of the contactor through an actuator.

Abstract: A method for mounting an interlock module between two contactors, including: providing a first contactor having a first mounting surface and a first movable iron core assembly and a second contactor having a second mounting surface and a second movable iron core assembly, and placing the first mounting surface and the second mounting surface face to face; providing the interlock module comprising a first slider, a second slider and a housing formed separately from the first slider and the housing, an interlocking portion being mounted in the housing for interacting with the first slider and the second slider; connecting the first slider to the first movable iron core assembly of the first contactor; connecting the second slider to the second movable iron core assembly of the second contactor; assembling the housing to the first slider and the second slider; and fixing the housing.

Abstract: A method for estimating the state of an electrical switching apparatus, the switching apparatus including separable electrical contacts configured to be coupled to an electrical conductor, and an electromagnetic actuator, controlled by a control circuit and including a movable core, coupled to the separable contacts, and a coil, which is passed through by a coil current. The method includes measuring, by means of sensors associated with the coil, values of the coil current in a time interval, while the electromagnetic actuator is kept in a stable and in particular closed position, and computing, by means of an electronic control device of the switching apparatus, one or more values of a magnetic flux of the coil from the measured coil-current values, and using coil-voltage and coil-resistance values known beforehand.

Abstract: The present disclosure relates to a method for resetting life diagnosis alarm of a contact of a contactor, including the following steps: Step A: detecting a reset signal by a microcontrol unit; Step B: when the microcontrol unit has detected the reset signal, checking the state of the diagnosis alarm through the microcontrol unit; and when the diagnosis alarm is in an active state, the microcontrol unit: Step C: controlling the indicator to give a first indication signal for confirming a reset operation of the diagnosis alarm; Step D: resetting life diagnosis data; Step E: controlling the opening and closing of the contact of the contactor through an actuator.

Abstract: A new method for manufacturing a ferromagnetic part for an electromagnetic contactor, the ferromagnetic part having both particularly high impact mechanical durability, good ferromagnetic properties and good corrosion resistance, while integrating a non-magnetic gap. The method includes the following successive steps: a step a) of supplying a soft ferromagnetic metal blank part; and a step b) of electroless nickel plating at least one section of the blank part in order to obtain the ferromagnetic part, the section of which is surface coated with a nickel surface layer, with the obtained ferromagnetic part including the soft ferromagnetic metal, which, for at least one electroless nickel plated section, is disposed under the nickel surface layer.

Abstract: A method is provided for controlling an actuator comprising an electromagnet and a control device, the electromagnet including a coil and a moving part that moves between a first position and a second position, the control device including a power supply member configured to supply the coil with an electric current having a voltage and an amperage and a measurement member for measuring a value of a quantity from among the voltage and the amperage. The method includes acquiring samples of the measured value, of regulating, according to a proportional-integral-derivative algorithm, the electric current to around a setpoint value that is equal to a maintenance value capable of maintaining the moving part in the second position, of comparing each sample to a predetermined threshold and of detecting a movement of the moving part if a single sample is above or equal to the threshold.

Abstract: A new method for manufacturing a ferromagnetic part for an electromagnetic contactor, the ferromagnetic part having both particularly high impact mechanical durability, good ferromagnetic properties and good corrosion resistance, while integrating a non-magnetic gap. The method includes the following successive steps: a step a) of supplying a soft ferromagnetic metal blank part; and a step b) of electroless nickel plating at least one section of the blank part in order to obtain the ferromagnetic part, the section of which is surface coated with a nickel surface layer, with the obtained ferromagnetic part including the soft ferromagnetic metal, which, for at least one electroless nickel plated section, is disposed under the nickel surface layer.

Abstract: A mobile part of an electromagnetic actuator for an electric contactor. The mobile part is made up of a flat piece cut from a rolled sheet. This flat piece includes a first stage intended to face towards a fixed part of the actuator and a second stage, side-by-side with the first stage along an axis of movement of the mobile part. A solid section of the second stage, measured in a plane perpendicular to the axis of movement of the mobile part, is smaller than a solid section of the first stage.

Abstract: An electromagnetic actuator of an electrical contact includes: a stationary portion including at least one coil generating a magnetic field centered on a longitudinal axis; at least one core concentrating magnetic flux, installed within the coil, and including a plate spreading the magnetic flux and defining an active surface perpendicular to the longitudinal axis, and at least one element returning magnetic flux; an armature translationally movable along the longitudinal axis and relative to the stationary portion between first and second positions, by a force induced by the magnetic field; and at least one device returning the armature elastically to a predetermined position of the first position or second position. The spreading plate includes at least one rib closing magnetic field lines between the spreading plate and the armature, protruding relative to the active surface on the armature side and housed on one edge of the spreading plate.

Abstract: A method is provided for controlling an actuator comprising an electromagnet and a control device, the electromagnet including a coil and a moving part that moves between a first position and a second position, the control device including a power supply member configured to supply the coil with an electric current having a voltage and an amperage and a measurement member for measuring a value of a quantity from among the voltage and the amperage. The method includes acquiring samples of the measured value, of regulating, according to a proportional-integral-derivative algorithm, the electric current to around a setpoint value that is equal to a maintenance value capable of maintaining the moving part in the second position, of comparing each sample to a predetermined threshold and of detecting a movement of the moving part if a single sample is above or equal to the threshold.

Abstract: A mobile part of an electromagnetic actuator for an electric contactor. The mobile part is made up of a flat piece cut from a rolled sheet. This flat piece includes a first stage intended to face towards a fixed part of the actuator and a second stage, side-by-side with the first stage along an axis of movement of the mobile part. A solid section of the second stage, measured in a plane perpendicular to the axis of movement of the mobile part, is smaller than a solid section of the first stage.