39results about "Switches with electromagnetic release" patented technology

A circuit breaker for an electric current, said device comprising a movable member (2) provided with an electrical conductor (4), said device being configured to move said movable member (2) between a first position, referred to as armed, allowing current to flow in the conductor (4), and a second position, referred to as disarmed, interrupting said current flow, said device further comprising an actuator (12), configured to trigger a transition of the movable member (2) from the armed position to the disarmed position in the event of a fault on an electrical circuit in which said device is integrated, said device further comprising a reset member (36) having a manual actuation zone (38), configured to move the movable member (2) from the disarmed position to the armed position, thereby also triggering a reset of the actuator (12), said actuation zone (38) forming a visual indicator of a disarmed state of said device.

A switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact.

To provide a breaking mechanism portion of a circuit breaker that enables components to be made common between an AC circuit breakers and a DC circuit breaker.SOLUTION: An angle adjustment screw 38 is attached to a rotating member 31, the angle adjustment screw 38 being capable of adjusting the angle of inclination of the rotating member 31 with respect to a hanging plate 41 around an axis in a left-right direction. A normal posture of the rotating member 31 is set to a first normal position in which the rotating member 31 and the hanging plate 41 are approximately parallel to each other, whereby it is possible to configure an AC circuit breaker 1. A normal position of the rotating member 31 is set to a second normal position in which the rotating member 31 is tilted forward, whereby it is possible to configure a DC circuit breaker.SELECTED DRAWING: Figure 6

The invention relates to a magnetic release for circuit breakers comprising • a core (K), with an excitation coil (L) fixedly arranged on the core (K), • a yoke (J) arranged in a fixed arrangement to the core (K), • a hinged armature (A) which is arranged on the yoke so as to be rotatable about a first axis (B1), • a first spring element (D1), wherein the first spring element (D1) is attached to the hinged armature (A) on a first side, and wherein the spring element (D1) holds the hinged armature (A) separate from the core (K) on the second side of the hinged armature (A) when the excitation coil (L) is not carrying current (resting case), wherein from a defined current flow through the excitation coil (L), the magnetic attraction force is so great that it exceeds the spring force of the first spring element (D1), so that the hinged armature moves towards the core (K) (working case), • wherein the hinged armature (A) at the end of the second side, when the hinged armature moves towards the core (K), actuates a release lever (T) rotatably mounted on a second axis (B2), • wherein the section from the attachment point of the first spring element (D1) to the first axis (B1) of the hinged anchor (A) is smaller than the section from the first axis (B1) to the second end of the hinged anchor (A).

A cut-off device for an electric current, said device comprising a movable member (2) provided with an electric conductor (4), said device being configured to cause said movable member (2) to pass between a first position, called armed, allowing a flow of current in the conductor (4), and a second position, called disarmed, cutting off said flow of current, said device further comprising an actuator (12), configured to trigger a passage of the movable member (2) from the armed position to the disarmed position in the event of a fault on an electric circuit in which said device is integrated, said device further comprising a resetting member (36) having a manual actuation zone (38), configured for a passage of the movable member (2) from the disarmed position to the armed position further causing a resetting of the actuator (12), said actuation zone (38) forming a visual indicator of a disarmed state of said device.Figure for abstract: Figure 1.

A protective device for an alternating current electrical installation having a compact component comprising a magnetic trip coil and a trip relay coil and an electronic circuit connected to the trip relay coil, characterized in that said electronic circuit includes a set for determining the effective value of the current intensity flowing in said magnetic trip coil from the signal present at the ends of said trip relay coil, implemented by an analog-to-digital converter (71), by a calculation unit (72) and by an interface (70), said calculation unit (72) being configured to produce numerical values ​​representative of the effective value of the current intensity,being connected to a communication device (96) and configured to communicate to said communication device (96) the said numerical values ​​representing the effective value of the current intensity.

A relay, comprising a contact container (10), a pair of stationary contact lead-out ends (20), a first magnetizer (40), a movable component (53) and a tripping assembly (80).The pair of stationary contact lead-out ends are connected to the con- tact container, and the first magnetizer can move between a first position and a second position relative to the contact container. The movable component comprises a movable spring (54) and a second magnetizer (55), wherein the first magnetizer is arranged on the side of the movable spring facing the stationary contact lead-out ends, and the second magnetizer is fixedly connected to the side of the movable spring facing away from the stationary contact lead-out ends. At the first position, the distance between the first magnetizer and the second magnetizer is a first spacing; and at the second position, the distance between the first magnetizer and the second magnetizer is a second spacing, wherein the first spacing is greater than the second spacing. The first magnetizer is connected to the contact container by means of the trip- ping assembly, and the tripping assembly is used for releasing the first magnetizer when a magnetic attraction force between the first magnetizer and the second magnetizer is greater than a threshold value. The relay can have both the anti-short-circuit capability and the limit breaking capability.

To comparatively easily enable an attachment of a cover at an appropriate position to a base, and to support a yoke at a position where a tripping function can be sufficiently exerted by attaching the cover to the base at the appropriate position.SOLUTION: A circuit breaker comprises: a housing having a base and a cover; and an instant tripping device having a yoke. The base supports a lower part of the yoke of the instance tripping device so as to nip them from front and rear directions, and the cover supports an upper part of the yoke of the instant tripping device so as to nip them from the front and rear directions. On a front surface side or a rear surface side of the cover, a contact part 31 coming into contact with an inner surface of the base is provided.SELECTED DRAWING: Figure 9

A power mechanism, a switch, a power conversion apparatus, and a power supply system are disclosed. The switch includes a contact component, a knob, and a power mechanism connected between the contact component and the knob. The power mechanism includes a fastening bracket, a knob connector, a contact connector, a transmission component, a trip unit, and a cradle. Both the knob connector and the contact connector are rotatively connected to the fastening bracket, and rotation centers of the knob connector and the contact connector are collinear. The transmission component is configured to implement power transmission between the knob connector and the contact connector. The trip unit is configured to receive a switch-off signal, to implement tripping of the trip unit and the cradle. The transmission component is driven to move by using the cradle, to separate the movable contact from the static contact, so that the switch is switched off. The switch provided in this application has advantages of a compact structure and a small size.

To provide a determination device capable of improving determination accuracy for determining whether or not a factor which brings a breaker into a trip state is overcurrent, an automatic resupply device, a breaker with automatic resupply function and a program.SOLUTION: A determination device 4 comprises: a current detection unit 41 which detects whether or not a current value to be electrified to a breaker 2 exceeds a predetermined threshold; a handle position detection unit 42 which detects whether or not a handle 23 of the breaker 2 is in an open state; and a determination unit 44 for determining that a cause which brings the breaker 2 into a trip state is overcurrent. The current detection unit 41 is configured to hold a current detection signal indicating that the current value exceeds the predetermined threshold for a predetermined time after the current value exceeds the predetermined threshold. The determination unit 44 determines whether or not the factor which brings the breaker 2 into the trip state is overcurrent based on the current detection signal and a handle opening / closing signal indicating the detection that the handle 23 of the breaker 2 is in the open state.SELECTED DRAWING: Figure 2

Device for protecting an alternating current electrical installation provided with a compact member comprising a magnetic trip coil and a trip relay coil and an electronic circuit connected to the trip relay coil, characterized in that said electronic circuit comprises a set for determining the effective value of the intensity of the current flowing in said magnetic trip coil from the signal present at the ends of said trip relay coil, implemented by an analog-digital converter (71), by a calculation unit (72) and by an interface (70), said calculation unit (72) being configured to produce digital values representative of the effective value of the intensity of the current,being connected to a communication member (96) and configured to communicate to said communication member (96) said digital values representative of the effective value of the current intensity.,

To provide a circuit breaker that improves an opening performance of a contact part at the time of a power abnormality and suppresses a temperature rise of a housing.SOLUTION: A circuit breaker 10 includes a first terminal part 11, a second terminal part 12, an electric path 30, a contact part 20, and a housing 40. The contact part 20 includes a fixed contact part 21 and a movable contact part 22. The fixed contact part 21 includes a first fixed contact part 21a and a second fixed contact part 21b. The first fixed contact part 21a and the second fixed contact part 21b are arranged in a direction orthogonal to a direction in which the fixed contact part 21 and the movable contact part 22 are adjacent to each other. At least one of the first terminal part 11 and the second terminal part 12 is disposed on a side opposite to the fixed contact part 21 side with respect to the movable contact part 22. The electric path 30 includes a contact part 20, a first electric path 31, and a second electric path 32. At least one of the first electric path 31 and the second electric path 32 is disposed so as to pass between the first fixed contact part 21a and the second fixed contact part 21b.SELECTED DRAWING: Figure 7

A switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact.

A protective switching device is to be optimized for confined installation spaces. Therefore, a protective switching device with a push button (12) is proposed. The protective switching device has, in particular, a cam (13) with which a joint (10) of the protective switching device mechanism can be guided, especially into a stable joint-in position (14) and a stable joint-out position (15).

Embodiments of this application provide a switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact. When a circuit is faulty, the power supply system can automatically drive the switch provided in this application to be switched off without a manual operation.

The present invention relates to an electronic trip section of a circuit breaker for wiring, and more particularly, to an electronic trip section of a circuit breaker for wiring having a function of preventing interphase interference. According to one embodiment of the present invention, the electronic trip part of the circuit breaker for wiring is provided with the magnetic field absorber wound with the Rogowski coil on the current detection part, so that the magnetic field can be prevented from diffusing to the adjacent phase.

The relay includes a contact receptacle (10), a pair of fixed contact lead-out ends (20), a first magnetic conductive body (40), a movable member (53), and a trip assembly (80), the pair of fixed contact lead-out ends being connected to the contact receptacle, the first magnetic conductive body being movable between a first position and a second position relative to the contact receptacle, the movable member including a movable contact (54) and a second magnetic conductive body (55), the first magnetic conductive body being provided on the side of the movable contact facing the fixed contact lead-out ends, and the second magnetic conductive body being connected to the fixed contact (54). The relay is fixedly connected to the side of the movable contact facing away from the point lead-out end, and in a first position, a distance between the first and second conductive bodies is a first interval, and in a second position, a distance between the first and second conductive bodies is a second interval, the first interval being greater than the second interval, the first conductive body is connected to the contact receptacle via a trip assembly, and the trip assembly is used to release the first conductive body when the magnetic attraction force between the first and second conductive bodies is greater than a threshold. This relay can achieve both short-circuit resistance and limit-breaking capability.

An electrical protection unit (2) comprises: a separable electrical contact (14) capable of being associated with an electrical conductor (4) of an electrical facility, an electromagnetic actuator (10) configured to open the separable electrical contact (14) when activated, an electronic trip device (18) configured to activate the electromagnetic actuator when an electrical fault is detected in the facility, and a power supply circuit (22) powered from the electrical conductor (4) and configured to supply power to the electronic trip device (18), wherein the electrical protection unit (2) further comprises an auxiliary trip device (24, 26) configured to detect a loss of power supply at an output of the power supply circuit (22) and to activate the electromagnetic actuator (10) in response to such a loss of power supply.

To provide an electromagnetic trip device capable of assisting a circuit breaker to quickly open a contact portion when an abnormal current occurs.SOLUTION: An electromagnetic trip device 10 includes a bottom portion 12 and a side wall portion 13 standing on the bottom portion 12, and includes a fixed piece 11 that forms a groove through which an electric circuit 20 of a circuit breaker 60 passes and a movable piece 16 having a first portion 17 that faces the upper surface 13a of the side wall portion 13, and a second portion 18 facing the inner surface of the side wall portion 13.SELECTED DRAWING: Figure 1

A circuit breaker is provided, which includes a housing, and a circuit breaker phase pole and a leakage protection pole arranged on two sides of the housing side by side, wherein the leakage protection pole includes a zero-sequence current transformer, a leakage operating mechanism, and a leakage testing mechanism, and a major loop of the circuit breaker phase pole passes through the zero-sequence current transformer; the leakage testing mechanism includes an elastic member, a test button, and a first contact member and a second contact member respectively connected to two ends of a test loop, one end of the elastic member is provided with a first contact portion matched with the leakage operating mechanism or a phase pole operating mechanism, the other end of the elastic member is provided with a second contact portion matched with the test button, the leakage operating mechanism or a phase pole circuit breaker is capable of pushing the first contact portion to contact with the first contact member when the circuit breaker is switched on, the test button is capable of pushing the second contact portion to contact with the second contact member, the testing mechanism forms the test loop with double breakpoints through two contact points of the first contact portion and the second contact portion on the elastic member, and the first contact portion and the second contact portion are respectively driven by the electric leakage operating mechanism and the test button.

To realize cost reduction and size reduction by reducing the number of components used for switching a contact mechanism.SOLUTION: An electronic overload relay includes a contact mechanism that can be switched between a steady state and a trip state, an electromagnet having a movable shaft that moves in the axial direction when energized, a slider that moves in the axial direction in conjunction with the movable shaft when energized, and a driven member that alternately switches the stop position of the slider after movement in the axial direction between a first stop position corresponding to the steady state and a second stop position corresponding to the trip state each time the electromagnet is energized.SELECTED DRAWING: Figure 4

To provide a current measuring device that can ensure reliability of a current measuring section.SOLUTION: A current measuring device 40 includes a plurality of current measuring sections 27a to 27c and a self-diagnosis determining section 31c. The plurality of current measuring units 27a to 27c measure the current flowing through each of a plurality of electric lines 7a to 7c forming a set of electric lines through which alternating current flows. The self-diagnosis determining section 31c performs a self-diagnosis determination as to whether or not the plurality of current measuring sections 27a to 27c are normal based on the measured values of each of the plurality of current measuring sections 27a to 27c.SELECTED DRAWING: Figure 1

The invention relates to a protection device for an alternating current electrical installation, equipped with a compact element comprising a magnetic tripping coil and a protection relay coil and an electronic circuit connected to the protection relay coil, characterized in that said electronic circuit comprises an assembly for determining the root mean square value of the intensity of the current flowing in said magnetic tripping coil as a function of the signal present at the end of said protection relay coil, this assembly being implemented by an analog-digital converter (71), a calculation unit (72) and an interface (70), said calculation unit (72) being configured to produce a digital value representative of the root mean square value of the intensity of the current, being connected to a communication element (96) and being configured to transmit said digital value representative of the root mean square value of the intensity of the current to said communication element (96).

A power distribution panel includes power protection devices, a controller configured to control the operation of the power protection devices, and an electronic processor. The electronic processor is configured to receive electronic field data associated with a conductor coupled to a first insulator sensor. Based on the received data, the electronic processor determines whether an adverse condition associated with one or more components of a power distribution network has occurred. The electronic processor is further configured to determine whether the adverse condition occurred at a portion of the power distribution network on the load side of the one or more power protection devices and in response to determining that the adverse condition occurred at the portion of the power distribution network on the load side of the one or more power protection devices, instructs the controller to control the power protection devices to perform a protective operation.

The present disclosure provides a releasing device to be used in a leakage protection device. The releasing device comprises a control circuit board 10; a coil assembly 20 coupled with the control circuit board 10 and at least comprising a coil bracket 21 and a static electrical contact 60 attached to the coil bracket; a movable assembly 30 attached with a movable contact arm 50, and the movable contact arm being provided with a movable electrical contact 52 corresponding to the static electrical contact; wherein the movable assembly 30 is configured to be capable of reciprocating relative to the coil assembly 20 between a first position, in which the movable electrical contact and the static electrical contact are disconnected to be in a disconnected state, and a second position, in which the movable contact arm 50 is driven by the movable assembly 30 to elastically deform so that the movable electrical contact is in contact with the static electrical contact to be in a closed state. The releasing device disclosed by the present disclosure realizes the reset function and the release function through the cooperative action of the coil assembly and the movable assembly, and has the ability of automatically disconnecting the current, thus effectively ensuring the functional requirements of power connection or disconnection of the input end and the output end.

To obtain an overcurrent trip device which can realize a reduction in the size of the device and a circuit breaker using the same. An overcurrent trip device (100) includes a conductor (3) connected to a main circuit of a circuit breaker (200); a stationary core (1) which is formed so as to enclose the conductor (3) and one portion of which is opened; and a moving core (2) which is disposed in the opened position of the stationary core (1) with a magnetic gap (4) interposed between the moving core and the stationary core (1), is disposed so as to be movable by an electromagnetic force of when an overcurrent flows through the conductor (3), wherein the stationary core (1) is disposed in abutment with the conductor (3), and the moving core (2) is in contact with the conductor (3) when no overcurrent flows through the conductor (3) before in operation.

The invention relates to the technical field of circuit breakers, in particular to a plug-in circuit breaker and a control system.The plug-in circuit breaker comprises a protective shell and a tripping mechanism installed in the protective shell, a moving contact piece is arranged in the tripping mechanism, a static contact is arranged in the protective shell, and the moving contact piece is driven to move through the tripping mechanism; therefore, the moving contact piece and the static contact are in contact conduction or separated disconnection, so that the state switching of the circuit breaker is realized. According to the plug-in circuit breaker, the positive pressure gas can be generated when the circuit breaker trips out, the positive pressure gas is blown out through the gas spraying hole in the moving contact piece, arc blowing guiding is conducted on an electric arc between the moving contact piece and the static contact, the electric arc enters the arc extinguish chamber more efficiently and stably, high temperature of the arc extinguish chamber can be discharged easily, and the service life of the product is prolonged.