The present invention relates to the field of low-voltage electrical appliances, and particularly relates to a comprehensive-sensing air circuit breaker. A smart controller of a control system of the comprehensive-sensing air circuit breaker comprises an MCU circuit. A circuit breaker self-inspection module of the smart controller comprises: a current sampling circuit, which comprises a mutual-inductor disconnection detection circuit used for detecting a connection state of an air-core mutual inductor; an iron-core mutual-inductor operating current measurement circuit, which is used for monitoring an output current of an iron-core mutual inductor; an electromagnetic-release disconnection detection circuit, which is used for detecting a connection state of an electromagnetic release of an execution unit; an auxiliary-power-source voltage measurement circuit, which is used for detecting an input state of an auxiliary power source for supplying power to a short-circuit protection mechanism; an energy storage readiness detection circuit, which is used for detecting an energy storage state of an energy storage operation mechanism; and a releasing state detection circuit, which is used for detecting a releasing state of the air circuit breaker. The circuit breaker self-inspection module of the comprehensive-sensing air circuit breaker can perform self-inspection on the operating state of the air circuit breaker, such that reliable and stable operating of the air circuit breaker is ensured.
An electromagnetic mechanism, comprising a coil, a core arranged in the coil, an outer magnet yoke and an inner magnet yoke, wherein the inner magnet yoke is located between the coil and the outer magnet yoke; a permanent magnet is provided on the inner magnet yoke; an inner bending pin bent in the direction of the core is provided on a side face of the inner magnet yoke that is close to the core; the inner bending pin is provided with an avoidance groove for avoiding the core; and a first air gap is formed between the periphery of the core and the inner bending pin. The inner bending pin of the inner magnet yoke is provided with the avoidance groove for avoiding the core, the first air gap in contact with the inner magnet yoke is formed on the periphery of the core, a new magnetic circuit is formed on an outer side of the inner magnet yoke by means of the first air gap, and the permanent magnet attracts the new magnetic circuit, such that the characteristics of attraction and release can be guaranteed. In addition, there is no need to use a gasket, thereby solving the problems caused by a gasket of an increase in assembly difficulty, it being difficult to control the size, and serious assembly errors.
Provided is a circuit breaker. The circuit breaker comprises at least one first housing (11), and a second housing (12) assembled on one side of the first housing (11), wherein at least one circuit breaker pole (2) is provided in the first housing (11), and each circuit breaker pole (2) at least comprises a one-phase main circuit; an electric leakage protection module (3) is provided in the second housing (12), and the electric leakage protection module (3) comprises a wiring terminal and a zero-sequence mutual inductor (34); a lead-out conductive member (45) is at least connected to the one-phase main circuit; the wiring terminal is connected to a wiring sheet; a wiring port is provided on a side wall of the side of the first housing (11) that is close to the second housing (12); the lead-out conductive member (45) and/or the wiring sheet are/is connected by means of insertion through the wiring port, so as to form a plug connection structure connected to a main loop; and the lead-out conductive member (45) and/or the wiring sheet pass(es) through a wire-passage hole of the zero-sequence mutual inductor (34). The lead-out conductive member (45) of the circuit breaker pole (2) fits with the wiring sheet of the electric leakage protection module (3) to form the plug connection structure connected to the main loop, such that the circuit breaker pole (2) and the electric leakage protection module (3) which are modularized meet the requirement of the main loop for passing through the zero-sequence mutual inductor (34) during an assembling process, and the wiring is simple and convenient.
A residual current operated circuit breaker, relating to the field of low-voltage electrical technology. The residual current operated circuit breaker comprises an electric leakage tripping pole module (2) as well as an L pole circuit breaker module (1) and an N pole circuit breaker module (3) which are arranged on two sides of the electric leakage tripping pole module (2); the L pole circuit breaker module comprises an L pole moving contact mechanism (12); the N pole circuit breaker module comprises an N pole moving contact mechanism (33); the electric leakage tripping pole module (2) comprises an electric leakage trip member (24), an electric leakage latch (27), a reset member (25), a rocker arm (26), an assembly shaft (28), and a release (201); the rocker arm (26) abuts against the reset member (25); the assembly shaft (28) is in linkage with the L pole moving contact mechanism (12) and the N pole moving contact mechanism (33); the rocker arm (26) is connected to one side of the electric leakage latch (27); at least one of the rocker arm (26) and the electric leakage latch (27) can abut against the assembly shaft (28); when the electric leakage trip member (24) and the electric leakage latch (27) are separated, the reset member (25) drives the rocker arm (26) to rotate, so that at least one of the rocker arm (26) and the electric leakage latch (27) pushes the assembly shaft (28). The L pole circuit breaker module (1) and the N pole circuit breaker module (3) are simultaneously broken, thereby improving the breaking capability.
A circuit breaker permission management method and a circuit breaker. The circuit breaker at least stores a plurality of permission accounts and at least three permission sets, each permission account at least corresponds to one permission set, and each permission account corresponds to one permission set. The circuit breaker permission management method comprises the following steps: S1: obtaining an input account, and comparing and verifying the input account with all the permission accounts in sequence until a permission account identical to the input account is found; S2: obtaining a permission set corresponding to the permission account identical to the input account as a current user permission set; and S3: displaying an operation interface on the basis of the current user permission set, and/or verifying a user operation, for simply and quickly achieving hierarchical management of functions of the circuit breaker. A complex user management function does not need to be set, the implementation cost is low, the use is convenient, and the application value is good.
A residual current operated circuit-breaker, comprising a residual current transformer, an excitation oscillation circuit, an integral circuit and a main control circuit, wherein the excitation oscillation circuit is connected to an excitation winding on the residual current transformer; the integral circuit is used for converting an excitation square wave signal generated by the excitation oscillation circuit into a triangular wave signal, and then respectively outputting the triangular wave signal by means of a first output end and a second output end; the first output end is connected to the main control circuit by means of a filter amplifier circuit; the second output end is directly connected to the main control circuit; and the main control circuit respectively collects the residual currents of the filter amplifier circuit and/or the second output end, and is used for controlling the residual current operated circuit-breaker to switch off. Therefore, not only can both large and small residual currents be processed, but the use of hardware circuits can also be reduced.
H02H 3/34 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p.ex. de courants dans des conducteurs d'aller et retour d'un système triphasé
H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec signalisation ou supervision additionnée à la déconnexion, p.ex. pour indiquer que l'appareil de protection a fonctionné
G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre
A circuit breaker, comprising a housing and at least two L-poles, wherein a leakage protection pole is arranged between the two L-poles, an electromagnetic coil of an electromagnetic system is arranged at a side of a third operation mechanism of the leakage protection pole, a connecting rod is rotatably assembled at a side of the electromagnetic coil, and the connecting rod connects the third operation mechanism and operation mechanisms of two adjacent L-poles in a linkage manner. When the circuit breaker is switched on, the connecting rod rotates to a switch-on position along with the leakage protection pole and the operation mechanisms of the two adjacent L-poles; and when the circuit breaker is switched off, the connecting rod rotates in a switch-off direction along with the operation mechanism of the two L-poles adjacent to the leakage protection pole, but the third operation mechanism does not move. When a leakage fault occurs, by means of the connecting rod, the third operation mechanism drives the operation mechanisms of the two adjacent L-poles to rotate together in the switch-off direction. In the present invention, a leakage protection pole is connected to two adjacent L-poles in a linkage manner by means of a connecting rod, thereby improving the degree of coordination between circuit breaker poles of a circuit breaker.
A test button loop device and a circuit breaker provided with a test button loop device. The test button loop device comprises an elastic button and a conductive piece that form a test loop; the elastic button comprises a contact portion cooperating with the conductive piece, and a button piece pressing the contact portion; the conductive piece is in linkage with a handle mechanism or an operating mechanism or a moving contact of a circuit breaker; when the circuit breaker is closed, the handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive piece to be close to the contact portion, and at this time, the button piece is pressed to drive the contact portion to move to be in contact with the conductive piece so as to conduct the test loop; and during opening, the handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive piece to be far away from the contact portion, and at this time, the button piece is pressed to drive the contact portion to move, so that the contact portion cannot be in contact with the conductive piece. The test loop of the present invention is only provided with one breakpoint formed by the contact portion and the conductive piece, but has the protection effect of a double-breakpoint structure, prevents the problem of electrification after opening caused by reverse wiring, and also has the advantages of being simple in structure, high in assembly efficiency, and high in reliability.
H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs
H01H 13/02 - Interrupteurs ayant un organe moteur à mouvement rectiligne ou des organes adaptés pour pousser ou tirer dans une seule direction, p.ex. interrupteur à bouton-poussoir - Détails
H01H 13/12 - Organes mobiles; Contacts montés sur ces organes
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
An air blast tripping mechanism and a circuit breaker. The air blast tripping mechanism is driven by air in an arc extinguishing system to trigger an operating mechanism to trip. The air blast tripping mechanism comprises a shell and a push rod rotationally connected to the shell, wherein the shell is provided with a sealing cavity with an air blast channel; the air blast channel is sealed and covered by an insulating partition plate; the air can blow the insulating partition plate to enter the sealing cavity; the push rod comprises a rotation arm and a reset arm, which are integrally arranged; the rotation arm is rotationally connected to one side of the sealing cavity; one end of the rotation arm is provided with an operating portion opposite the operating mechanism of the circuit breaker, and the other end of the rotation arm is provided with an air blast end; the air blast end extends into the sealing cavity, is located on one side of the insulating partition plate, and can drive the rotation arm to rotate under the action of the air; and the elastic reset arm is arranged on one side of the rotation arm, and is used to drive the push rod to reset. After the push rod in the present invention triggers the operating mechanism to complete tripping, the push rod is reset by the reset arm and the shell in a fitting manner. The air blast tripping mechanism has the advantages of a simple structure, a high fitting degree and low costs.
A thermal overload relay, comprising a shell, and a main circuit, a heating protection system, an operating mechanism and a control circuit, which are respectively arranged inside the shell, wherein a first straight-through line is arranged in the shell, a wire intake end of the main circuit is provided with a wire intake end lead portion that extends out of the shell, and the first straight-through line comprises a first contact portion which is connected to the control circuit, and a first lead portion which extends out of the shell; one end of the first straight-through line is connected to the control circuit; the first lead portion and the wire intake end lead portion of the main circuit are arranged on the same side of the shell for connecting a coil of a contactor; and the heating protection system triggers the operating mechanism in the case of an overload, and the operating mechanism acts to drive the control circuit to cut off the power supply of the first straight-through line. By means of setting, inside the shell, the first straight-through line to be connected to the control circuit, the control circuit is directly connected to the coil of the contactor by means of the first straight-through line, such that the wiring steps can be reduced, and no additional wiring needs to be performed for the control circuit, thus making same have the characteristics of convenient wiring.
A delay characteristic check method for a bimetallic switch. The method comprises a trip travel pre-adjustment operation and a trip point check operation. The method is suitable for automated operation, and has a high check pass rate and high efficiency. A delay characteristic check method for a relay. The method comprises operations such as a primary pre-adjustment, a trip point check and a secondary pre-adjustment. The method is suitable for automated operation, and has a high check pass rate and high efficiency. A delay characteristic check apparatus for a relay to which apparatus a delay characteristic check method for a relay is applied. By means of the apparatus, the automated and fast checking of a delay characteristic of a relay is realized.
The present invention relates to the technical field of materials, and in particular, to a compound dispersant, which is composed of distilled water, a nonionic surfactant, an anionic surfactant, and a wetting agent; the nonionic surfactant is a Tween compound, the anionic surfactant is a hydrocarbyl sulfonate compound, and the wetting agent is an amide compound. The compound dispersant can block or slow down the agglomeration of graphene in a dispersion. The present invention also relates to a preparation method for a compound dispersant. The preparation method is used for preparing the compound dispersant, and is simple to operate. The present invention also relates to a mixed electroplating solution comprising the compound dispersant. The graphene in the mixed electroplating solution is dispersed evenly and stably. The present invention also relates to a preparation method for a mixed electroplating solution. The graphene in the prepared mixed electroplating solution is dispersed evenly and stably.
The present invention relates to the technical field of materials, and in particular to a composite dispersant, which consists of distilled water, a nonionic surfactant, an anionic surfactant and a wetting agent. The nonionic surfactant is a Tween-type compound, and the anionic surfactant is a hydrocarbyl sulfate compound. The composite dispersant is capable of blocking or slowing down the agglomeration of graphene in a dispersion. The present invention further relates to a preparation method for the composite dispersant, which is simple in operation. The present invention further relates to a mixed electroplating solution comprising the composite dispersant, wherein graphene is uniformly and stably dispersed. The present invention further relates to a method for preparing the mixed electroplating solution. Graphene is uniformly and stably distributed in the prepared mixed electroplating solution.
The present invention relates to the technical field of materials, and in particular, to a compound dispersant, which is composed of distilled water, a nonionic surfactant, and a wetting agent; the nonionic surfactant is a Tween compound, and the wetting agent comprises a hydrocarbyl sulfate compound and a hydrocarbyl sulfonate compound. The compound dispersant can effectively block or slow down the agglomeration of graphene in a dispersion. The present invention also relates to a preparation method for a compound dispersant. The preparation method is simple to operate, and the prepared compound dispersant can effectively block or slow down the agglomeration of graphene in a dispersion. The present invention also relates to a mixed electroplating solution comprising the compound dispersant. The graphene in the mixed electroplating solution is dispersed evenly and stably. The present invention also relates to a preparation method for a mixed electroplating solution. The preparation method is simple to operate, and the graphene in the prepared mixed electroplating solution is dispersed evenly and stably.
The present invention relates to the field of low voltage electrical devices, and specifically involves a plastic case circuit breaker, which comprises a circuit breaker body and an electric operating apparatus, the circuit breaker body comprises an operating mechanism, and the operating mechanism comprises a handle which drivingly cooperates with the electric operating apparatus; the electric operating apparatus comprises a rotatably-configured rotary disk as well as a protruding wheel, a slide block, and a slide rail for positionally restricting and guiding the slide block, all of which are arranged on the rotary disk; the slide block comprises a slide block driven slot and a slide block drive slot, the protruding wheel drivingly cooperates with the slide block driven slot, and the handle is inserted within the slide block drive slot; the rotary disk rotates and drives the slide block to move back and forth along the slide rail by means of the protruding wheel, and the slide block drives the handle to swing by means of the slide block drive slot, causing the plastic case circuit breaker to close/open; the plastic case circuit breaker of the present invention has a slide block structure that is simple, sturdy, and reliable, which can significantly improve the reliability of the electric operating apparatus.
A plug-in circuit breaker in the field of low voltage electrical appliances, comprising a circuit breaker outer shell (1) and a locking mechanism, an unlocking mechanism, a button mechanism (2), and an operating mechanism connected to the button mechanism (2) arranged in the circuit breaker outer shell (1); operating the button mechanism (2) can drive the closing/breaking of the circuit breaker by means of the operating mechanism; the locking mechanism comprises a first locking member (1a) with one end protruding outside the circuit breaker outer shell (1), and the circuit breaker outer shell (1) comprises a locking member hole (17) fitting to the first locking member (1a); the unlocking mechanism comprises an independent drawing mechanism (2a) having a drive fit to the first locking member (1a); when the circuit breaker is in a breaking state, one end of the first locking member (1a) extends outside the circuit breaker outer shell (1) from the locking member hole (17), and pulling the drawing member (2a) can drive the first locking member (1a) to retract inside the circuit breaker outer shell (1); the plug-in circuit breaker comprises an unlocking mechanism independent of the button mechanism (2), avoiding the occurrence of the circuit breaker being accidentally unplugged from the circuit breaker assembly position due to the breaking operation.
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
H01H 9/22 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage entre enveloppe, capot ou volet de protection et le mécanisme actionnant les contacts
A circuit breaker. A circuit breaker housing (1) thereof comprises a closing button hole (110) and an opening button hole (111). A button mechanism (2) comprises a closing button (20) and an opening button (21). The closing button (20) comprises a closing button operating end slidably provided in the closing button hole (110). The opening button (21) comprises an opening button operating end slidably provided in the opening button hole (111). The closing button operating end is pressed in the direction of the interior of the circuit breaker housing (1) to drive an operating mechanism to close the circuit breaker, while the opening button operating end moves in the direction of the exterior of the circuit breaker housing (1); the opening button operating end is pressed in the direction of the interior of the circuit breaker housing (1) to drive the operating mechanism to open the circuit breaker, while the closing button operating end moves in the direction of the exterior of the circuit breaker housing (1). The circuit breaker is capable of determining the open/closed state of the circuit breaker by observing the state of the buttons (20 and 21). The closing button operating end and the opening button operating end respectively are provided in the closing button hole (110) and the opening button hole (111), thus preventing inadvertent operation of the circuit breaker due to contact by accident.
A circuit breaker, which comprises a circuit breaker housing (1), a button mechanism (2) disposed within the circuit breaker housing (1), an operating mechanism connected to the button mechanism (2), a moving contact (60) connected to the operating mechanism, and a static contact (61) used cooperatively with the moving contact (60). Operating the button mechanism (2) can, by means of the operating mechanism, drive the circuit breaker to switch on and off. The circuit breaker also comprises an electric mechanism (2c) disposed within the circuit breaker housing (1). The electric mechanism (2c) is in driving cooperation with the button mechanism (2) or the operating mechanism, can drive, by means of the operating mechanism, the circuit breaker to switch on/off, or can drive, by means of the button mechanism (2), the circuit breaker to switch on/off. The electric mechanism (2c) of the circuit breaker achieves the remote control of the circuit breaker.
A miniature circuit breaker, comprising a housing and a handle. An overload protection device and an operating mechanism which is connected to a moving contact are provided in the housing; the overload protection device comprises a temperature control assembly provided with a bimetallic strip; the side in the housing close to the moving contact is provided with an incoming line connecting terminal connected to the moving contact; a stationary contact matching the moving contact is provided on one side of the moving contact, and the temperature control assembly is provided on the other side of the moving contact; when overload, the temperature control assembly drives a temperature control protection device provided in the housing to trigger the circuit breaker to trip; the temperature control protection device comprises a separation plate and a thermal trip rod; the separation plate separates the moving contact and the thermal trip rod in two different planes; the temperature control assembly comprises the bimetallic strip and a current-carrying conductor; when the circuit breaker is overloaded, a movable end of the bimetallic strip drives the thermal trip rod to rotate to trigger the circuit breaker to trip. The present utility model reduces the length of the current-carrying conductor of the temperature control assembly, decreases the internal resistance and reduces heat generation, and avoids damage to parts caused by excessive temperature rise of the temperature control assembly.
A circuit breaker, comprising a residual current analysis and comparison circuit and an actuating mechanism. An electronic detection circuit, an electromagnetic residual current detection circuit, and a driving circuit are comprised; the electronic detection circuit comprises a working power supply and a detection circuit; the detection circuit comprises an electronic residual current detection circuit, a processing circuit, and a comparison circuit; the electronic residual current detection circuit acquires a fault signal and converts same into a sampled output signal; the processing circuit amplifies the received sampled output signal to form a preprocessed signal; the comparison circuit receives the preprocessed signal and compares same with a set threshold, and the comparison circuit outputs the fault signal and controls the driving circuit to make the actuating mechanism operate to trip the circuit breaker; the electromagnetic residual current detection circuit is used for an electromagnetic residual current fault monitor to monitor a circuit, and the electromagnetic residual current detection circuit makes the actuating mechanism operate to trip the circuit breaker. The circuit breaker in the present invention has two detection circuits that can work together and do not interfere with each other.
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
H02H 3/14 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à la présence d'une tension sur les pièces normalement au potentiel de la terre
H02H 3/32 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p.ex. de courants dans des conducteurs d'aller et retour
An electric operating device for a circuit breaker, comprising a housing (1). A transmission mechanism is mounted in the housing (1); a side wall of the housing (1) is used as an operating surface (11) and provided with a first sliding groove (101) communicated with the interior of the housing (1); a sliding rod (102) is mounted in the housing (1); a driving member controlled by the transmission mechanism is mounted on the sliding rod (102); the driving member is provided with a closing operation portion (31a) and an opening operation portion (31b); the driving member passes through the first sliding groove (101) to extend out of the housing (1); the driving member moves along the sliding rod (102) under the control of the transmission mechanism; the closing operation portion (31a) and the opening operation portion (31b) operate a handle (5) of a circuit breaker to close and open, respectively. According to the electric operating device for a circuit breaker, the sliding rod (102) for providing a moving path for the driving member is mounted in the housing (1), so that the driving member operates closing and opening of a circuit breaker by means of the closing operation portion (31a) and the opening operation portion (31b) in the process of moving along the sliding rod (102); moreover, the closing operation portion (31a) and the opening operation portion (31b) can be widened according to the number of handles (5) of circuit breakers, so that one electric operating device can operate the handles (5) of multiple circuit breakers.
A circuit breaker, comprising a housing assembly, and a contact system, an electric leakage protection mechanism and an electric leakage test mechanism arranged inside the housing assembly. The contact system comprises a handle (21), a contact terminal mechanism and an operation mechanism (23). When the circuit breaker is switched on or switched off, the operation mechanism (23) is driven by means of the handle (21) to close or cut off the contact terminal mechanism. The electric leakage test mechanism comprises an electric leakage test button (50), and an electric leakage test loop cooperating with a zero-sequence current transformer (41) of the electric leakage protection mechanism. The electric leakage test loop comprises a first test contact point (T1) cooperating with the electric leakage test button (50), and a second test contact point (T2) cooperating with the contact system, wherein the second test contact point remains closed, and the contact system cuts off the second test contact point (T2) when the circuit breaker is switched off; and the contact system avoids the second test contact point (T2) when the circuit breaker is switched on, such that the second test contact point (T2) is reset and remains closed. Therefore, contact terminal parameters of the contact terminal mechanism are not affected, thereby ensuring the contact terminal pressure of the contact terminal mechanism during switching on thereof.
H01H 83/04 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre avec moyens de test indiquant l'aptitude de l'interrupteur ou relais de fonctionner correctement
A plug-in circuit breaker, comprising a shell, a button mechanism, and an operating mechanism. The button mechanism drives the operating mechanism to execute closing/opening, the button mechanism has a closing position and an opening position, the shell is formed with a limiting hole, the circuit breaker further comprises a locking piece arranged in the shell, and the locking piece is provided with a locking boss arranged corresponding to the limiting hole; when the button mechanism is located at the closing position, the locking boss of the locking piece extends out of the limiting hole and is limited by the button mechanism and cannot return back to the shell; when the button mechanism is located at the opening position, the locking boss of the locking piece extends out of the limiting hole, an external force is applied to the locking piece, the locking boss of the locking piece can return back to the shell, and the locking piece limits the button mechanism to perform a closing operation, so that the circuit breaker cannot complete a closing action. Plug and unplug of the circuit breaker in a closed state and closing of the circuit breaker in a mounting process can be prevented, the structure is simple, and the reliability is high.
A plug-in circuit breaker, comprising a circuit breaker housing provided with a limiting hole, an opening/closing button, and a locking member. The locking member is rotatably mounted in the circuit breaker housing. The upper part of the locking member close to the limiting hole is provided with a locking protrusion matching the limiting hole, and the lower part of the locking member is provided with a locking driving surface matching the opening/closing button. Pressing the opening/closing button, the opening/closing button pushes the locking driving surface of the locking member, and drives the locking protrusion of the locking member to rotate toward the limiting hole of the circuit breaker housing; when the limiting hole is not blocked, the opening/closing button pushes up the locking driving surface to make the locking protrusion stretch out from the limiting hole and close the plug-in circuit breaker; when the limiting hole is blocked and thus the locking protrusion cannot stretch out from the limiting hole, the locking driving surface limits the opening/closing button so that the opening/closing button cannot be pressed in place, and the plug-in circuit breaker cannot be closed. By means of cooperation of a locking member and an opening/closing button, multiple locking functions are implemented, and the structure is simple and the cost is low.
A plug-in circuit breaker in the field of low-voltage apparatus, one end of an operation button (1d) of a protection electrode of the plug-in circuit breaker is inserted into a circuit breaker shell, the operation button (1d) and a first wire outlet terminal (11) and a first wire inlet terminal (110) are arranged at the two ends of the circuit breaker shell respectively, an operation mechanism (3) and a protection mechanism (4) are arranged in the middle of a protection electrode assembly cavity side by side and are positioned between the operation button (1d) and an arc extinguishing system (5) and between the first wire outlet terminal (11) and the arc extinguishing system (5) respectively; when the plug-in circuit breaker is in a closing state, the operation mechanism (3) is in a locking and fastening state, a short circuit state or an overload state occurs, the protection mechanism (4) drives the operation mechanism (3) to trip, the plug-in circuit breaker trips and the operation mechanism (3) enters a tripping state, the operation button (1d) is pulled to drive the operation mechanism (3) to recover the locking and fastening state, and the plug-in circuit breaker enters a breaking state; or the plug-in circuit breaker is enabled to enter the breaking state, and after a fault is eliminated, the operation button (1d) is pressed to drive the operation mechanism (3) to act such that the plug-in circuit breaker is enabled to enter the closing state. The plug-in circuit breaker is compact in structure and small in size.
The present invention relates to the field of low-voltage electrical appliances, and in particular, to an insertion type circuit breaker. An operation button of the insertion type circuit breaker comprises an inner button end inserted in a circuit breaker housing, and an outer button end, and is provided with an indicating member slot. An indicating hole is provided on the outer button end. The insertion type circuit breaker further comprises an indicating member slidably inserted in the indicating member slot and of which one end is provided with a closing indicating surface and an opening indicating surface. When the insertion type circuit breaker is in an opening state, the opening indicating surface is provided opposite the indicating hole, the operation button is pressed, and the indicating member moves in the indicating member slot. After closing, the closing indicating surface is provided opposite the indicating hole, the operation button is pulled, and the indicating member moves in the indicating member slot. After opening, the opening indicating surface is provided opposite the indicating hole. According to the present invention, the indicating member of the insertion type circuit breaker is located in the operation button, which saves the assembly space inside the housing. The indicating member can intuitively indicate the opening/closing state by means of the indicating hole, which makes it convenient to observe.
A plug-in circuit breaker, comprising a housing, a button mechanism, and an operation mechanism, wherein the button mechanism has a closing position and an opening position which correspond to a closing/opening state of the circuit breaker. The circuit breaker further comprises a linkage piece and a locking piece which are provided in the housing; the linkage piece is provided with an abutting boss, and the locking piece is provided with a locking boss; when the button mechanism is located at the closing position, the abutting boss of the linkage piece extends out of the housing and is limited at an extending position by the button mechanism so that the abutting boss cannot return back to the housing; and when the button mechanism is at the opening position, the linkage piece returns back to the housing, the locking boss of the locking piece extends out of the housing and can be pushed by an retraction external force to return back to the housing, so that closing plugging and unplugging can be reliably prevented, the risk of hot-line operation is avoided, and the circuit breaker can be protected from falling out of a cabinet due to vibration in a process of transportation and the like.
A method for establishing a wireless communication connection in a prepaid reclosing circuit breaker device. The prepaid reclosing circuit breaker device comprises a circuit breaker and a prepay module. The circuit breaker comprises a first MCU circuit, an operation mechanism, a contact system, and a first wireless communication module connected to the first MCU circuit. The control module comprises a second MCU circuit, a second wireless communication module connected to the second MCU circuit, and a reclosing drive mechanism. Both the first wireless communication module and the second wireless communication module are WIFI communication modules. The first wireless communication module establishes a wireless communication connection between the first wireless communication module and the second wireless communication module according to a unique device name and verification code of the control module, or the control module establishes a wireless communication connection between the control module and the first wireless communication module according to a unique device name and verification code of the circuit breaker. The invention simplifies the structure of the prepaid reclosing circuit breaker device, and facilitates assembly and maintenance.
H04W 4/70 - Services pour la communication de machine à machine ou la communication de type machine
G07F 15/06 - Appareils déclenchés par pièces de monnaie avec distribution de liquide, de gaz ou d'électricité commandée par le comptage avec des moyens pour le paiement préalable de redevances fixes, p.ex. location de compteurs
A plug-in miniature circuit breaker, an operating mechanism thereof comprising an operating member (1) with one end inserted into a shell (6) and the other end protruding outside the shell, a contact system comprising a moving contact (900c) with one end connected to the operating mechanism and a static contact (910c) used in conjunction with the moving contact; the shell comprises an open/closed indicating window (62a) arranged thereupon; also comprising an open/closed indicating member (2) arranged in the shell and being used for indicating the open/closed state of the plug-in miniature circuit breaker, the open/closed indicating member being arranged on one side of the operating member and being linked to same; pressing the operating member makes the plug-in miniature circuit breaker enter a closed state by means of the operating mechanism, and makes the open/closed indicating member move, the closed state of the plug-in miniature circuit breaker being indicated by means of the open/closed indicating window; the open/closed indicating member of the plug-in miniature circuit breaker is arranged on one side of the operating member and cooperates with the open/closed indicating window on the shell, and is capable of visually and clearly indicating the open/closed state of the circuit breaker.
A compact circuit breaker comprises a housing (2), a button mechanism (1) and an indication device. The housing (2) has an indication hole (201) arranged at one side thereof. The button mechanism (1) is slidably engaged with the housing (2). The button mechanism (1) is engaged with and used to drive the indication device. When pressed to cause the compact circuit breaker to close, the button mechanism (1) drives the indication device to conceal the indication hole (201). The indication device of the compact circuit breaker can indicate a closing state of the circuit breaker when the circuit breaker closes, thereby enhancing electricity usage safety.
A miniature circuit breaker, relating to the field of low-voltage electrical appliances. The miniature circuit breaker comprises a button mechanism (1), a circuit breaker shell (2), and an anti-closing mechanism; the button mechanism (1) is provided at one end of the circuit breaker shell (2) and slidably fits the circuit breaker shell; the anti-closing mechanism comprises a first locking member (3); the first locking member (3) is pivotally provided on the circuit breaker shell (2); one end of the first locking member (3) is in locking fit with the button mechanism (1) to stop the button mechanism (1) from moving towards a closing direction; after the miniature circuit breaker is assembled to a circuit breaker assembly position and mounted in place, the shell at the circuit breaker assembly position acts on the first locking member (3), so that after the first locking member (3) is released from the locking fit with the button mechanism (1), the button mechanism (1) can move towards the closing direction to perform a closing operation. The anti-closing mechanism of the miniature circuit breaker ensures that the circuit breaker can be closed only after being assembled to the circuit breaker position and mounted in place, and ensures the use safety.
The present invention relates to the field of low-voltage electrical appliances, in particular to a miniature circuit breaker, comprising a circuit breaker housing, a button mechanism, an operating mechanism, a movable contact, and a static contact. The operating mechanism comprises a support member, a trip fastener, a lock fastener, and a trip lever. The trip lever comprises a trip lever connecting end and a trip lever driving end. When the miniature circuit breaker is in an open state, if the button mechanism is pressed, the operating mechanism is driven to operate, the operating mechanism drives the movable contact and the static contact to be closed, and the trip lever driving end moves to a position matched with the trip fastener; if the button mechanism is pressed again, the trip lever driving end of the trip lever drives the trip fastener to rotate to enable the trip fastener and the lock fastener to be released from the locking fit, the operating mechanism operates and drives the movable contact to be separated from the static contact, so that the miniature circuit breaker enters the opening state, and the trip lever is reset to an initial position at the same time. The opening/closing operation of the miniature circuit breaker can be achieved by pressing the button mechanism.
The present invention relates to the field of low-voltage electric appliances, in particular to a miniature circuit breaker. The miniature circuit breaker comprises a button mechanism, a circuit breaker housing, and a locking mechanism. The button mechanism is disposed on one end of the circuit breaker housing and is in sliding fit with the circuit breaker housing; the locking mechanism comprises a second locking piece, which is pivotally disposed on the circuit breaker housing; the circuit breaker housing comprises a second opening hole formed in one side of the circuit breaker housing; one end of the second locking piece is in driving fit with the button mechanism, and the other end penetrates through the second opening hole to be in limiting fit with the housing at the assembling position of the circuit breaker; when the button mechanism is pulled out of the circuit breaker housing, the button mechanism drives the second locking piece to rotate, so that the limiting match between the second locking piece and the housing at the assembling position of the circuit breaker is released. According to the miniature circuit breaker provided by the present invention, a reliable limiting fit is formed between the locking mechanism and the housing at the assembly position of the circuit breaker, so that the stability and the reliability of the assembly of the miniature circuit breaker are ensured.
An electromagnetic tripping device and a circuit breaker using same, relating to the field of low-voltage appliances. One end of a magnetic yoke (9) of the electromagnetic tripping device is connected to a temperature sensing connecting plate (1), and the other end thereof fits an armature (11); the middle of the armature (11) is pivotally arranged; a tripping rod (12) is in latching engagement with a tripping latch (2) of the circuit breaker; when a short circuit current flows through the temperature sensing connecting plate (1), a first armature arm (112) is attracted to swing to the magnetic yoke (9), so that a second armature arm (111) drives the tripping rod (12) to release the latching engagement with the tripping latch (2), and thus the circuit breaker is opened, and a counter-force spring (6) is configured to reset the armature (11); an armature support (8) is further comprised; one end of the armature support (8) is arranged on the temperature sensing connecting plate (1); the middle of the armature (11) is pivotally connected to the armature support (8); the armature support (8) comprises a magnetic gap adjusting screw (7); the magnetic gap adjusting screw (7) is arranged corresponding to and in driving connection with the second armature arm (111); the distance between the first armature arm (112) and the magnetic yoke (9) can be adjusted by screwing the magnetic gap adjusting screw (7). The electromagnetic tripping device is higher in product percent of pass, and the circuit breaker is better in action performance.
A circuit breaker, comprising a housing and a circuit breaker phase pole and a leakage protection pole provided on the two sides of the housing side by side. The leakage protection pole comprises a zero-sequence current transformer, a leakage operation mechanism, and a leakage test mechanism; a main loop of the circuit breaker phase pole passes through the zero-sequence current transformer; the leakage test mechanism comprises an elastic piece, a test button, and a first contact piece and a second contact piece respectively connected to the two ends of a test loop; one end of the elastic piece is provided with a first contact part matching the leakage operation mechanism or a phase pole operation mechanism, and the other end of the elastic piece is provided with a second contact part matching the test button; the leakage operation mechanism or the phase pole circuit breaker is capable of pushing the first contact part to make contact with the first contact piece when the circuit breaker is switched on; the test button is capable of pushing the second contact part to make contact with the second contact piece; the test mechanism forms the test loop having double breakpoints by means of two contacts of the first contact part and the second contact part on the elastic piece, and the first contact part and the second contact part are respectively driven by the leakage operation mechanism and the test button.
H01H 83/14 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par le déséquilibre entre plusieurs courants ou tensions, p.ex. pour la protection différentielle
H01H 73/40 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel comportant un déclencheur électromagnétique mais aucun autre déclencheur automatique réarmé par un basculeur
37.
MANUAL OPERATION MECHANISM HANDLE FOR CIRCUIT BREAKER
Disclosed is a manual operation mechanism handle for a circuit breaker, the handle comprising an operation handgrip (15), a lock-up device (12), and a locking shaft (14), wherein the middle of the lock-up device (12) is pivotally arranged on the operation handgrip (15), a front end of the lock-up device (12) is connected to the locking shaft (14), the lock-up device (12) is connected to the operation handgrip (15) by means of a first driving member, a rear end of the lock-up device (12) cooperates with a locking mechanism in limiting manner, the rear end of the lock-up device (12) is provided with a lock-up hole (21), and the lock-up hole (21) is blocked by the operation handgrip (15). When the circuit breaker is in a opened state, the locking mechanism is unlocked, the first driving member enables the front end of the lock-up device (12) to move down to drive the locking shaft (14) to lock the operation handgrip (15), and at the same time, the rear end of the lock-up device (12) is raised, such that the lock-up hole (21) is released from the operation handgrip (15). The locking mechanism can realize locking of the lock-up device (12), and a user can conveniently rotate the operation handgrip (15), such that after the locking mechanism is unlocked by means of the opening/closing of the circuit breaker, the lock-up device (12) can automatically drive the locking shaft (14) to lock the operation handgrip (15).
H01H 9/28 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour verrouiller des pièces de l'interrupteur par une clé ou un élément équivalent amovible
A frequency converter, comprising a shell, and a CPU board and a power supply module provided in the shell. The power supply module comprises a capacitor plate and a power supply board which are provided as separate parts. The power supply board comprises an EMC circuit, a rectifier circuit, an inverter circuit, an output circuit, and a current sampling circuit. The EMC circuit is connected to the rectifier circuit. The capacitor plate comprises an RC circuit and a switching power supply circuit. The rectifier circuit is connected to the RC circuit. The RC circuit is connected to the inverter circuit and the switching power supply circuit. The switching power supply circuit is connected to the inverter circuit and the CPU board. The inverter circuit is connected to the output circuit. The output circuit is connected to the current sampling circuit. The current sampling circuit is connected to the CPU board. The switching power supply circuit supplies power to the inverter circuit, the current sampling circuit, and the CPU board. By splitting the power supply module having a large lateral area into the capacitor plate and the power supply board which are provided as separate parts, the space occupied by the power supply module can be reduced, and the circuit distribution is reasonable.
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
A drawer type circuit breaker, comprising a drawer base (1) and a circuit breaker body (2); the circuit breaker body (2) is pushed in and pulled out of the drawer base (1), so that the circuit breaker body (2) is connected to and separated from a main circuit of the drawer base (1); a safety baffle (3) used for blocking a drawer base bus or bridge contact of the drawer base (1) is provided between the drawer base (1) and the circuit breaker body (2); a forward-and-backward displacement device (4) used for moving the safety baffle (3) towards the motion direction of the drawer base (1) is provided on the safety baffle (3) and the drawer base (1). According to the drawer type circuit breaker, the forward-and-backward displacement device (4) is provided on the safety baffle (3) and the drawer base (1), so that the safety baffle (3) can move forward and backward; the drawer base bus can extend out of the safety baffle (3); the bridge contact can be installed on the drawer base (1), and can also be installed on the circuit breaker body (2). Therefore, the installation position of the bridge contact is more flexible, and the connection of the main circuit is more stable and reliable.
Disclosed is an external operation handle, comprising a coupling shaft connected to a switch electrical appliance and a linkage member connected to the coupling shaft, wherein the linkage member is arranged in a casing, the top side of the casing is provided with a handle member connected to the linkage member, and the bottom side of the linkage member is provided with a linkage shaft groove in a sliding fit with the coupling shaft; a linkage keyway in a sliding fit with a coupling key on the coupling shaft is arranged in the linkage shaft groove, and a movable locking member and an unlocking member connected to the locking member are arranged below the linkage member; the locking member is provided with a locking shaft hole corresponding to the linkage shaft groove, and a locking key hole corresponding to the linkage keyway is arranged in the locking shaft hole; and the unlocking member can drive the locking member to move, such that the locking key hole is offset from or overlapped with the linkage keyway. The bottom side of the linkage member is provided with the locking member that is in cooperation with the coupling key, so that a locking mechanism can lock or release, in an emergency, the coupling shaft via a simple structure, it is not necessary to process and prepare other structures on the coupling shaft, the manufacturing cost is reduced, and the reliability of the coupling shaft is also ensured.
Provided is a contactor, comprising a body housing (1) and a contact support (2); the contact support is movably mounted inside a mounting chamber (10) of the body housing; the main body (20) of the contact support is provided with a plurality of lower accommodating chambers (22), used for accommodating a dynamic contact; the plurality of lower accommodating chambers are arranged at intervals, and the side wall of the main body is provided with a plurality of position-limiting structures located between two adjacent lower accommodating chambers, the plurality of position-limiting structures fitting a plurality of insert plates (12) in the mounting chamber; an insert plate comprises a connecting end part (121) and a bending base part, connected to each other; the bending part of the insert plate is connected to the side wall of the bending base part; each position-limiting structure comprises a first position-limiting plate (25) and second position-limiting plate (26) formed by extending from the side walls of the two adjacent lower accommodating chambers, respectively; the first position-limiting plate comprises a connecting base part (251) and a bending end part, connected to each other; the connecting base part is connected to the main body and is spaced apart from the second position-limiting plate so as to form an insertion slot (27) fitting the connecting end part of the insert plate; the bending end part is arranged opposite to the insert plate. The contactor has a simple structure and good arc-isolating performance.
A self-balancing structure capable of balancing pressing forces on a double-break contact bridge comprises a rotor support frame, a contact bridge, and two elastic pieces. The contact bridge 2 comprises: two contact ends arranged symmetrically about the center of the contact bridge; and a middle portion installed via a pivot axle on the rotor support frame. A guiding track is provided between the rotor support frame and the contact bridge, and has a length exceeding an outer diameter of the pivot axle. Two adjusting parts are arranged on an upper side and a lower side of the middle portion of the contact bridge and symmetrically about the center of the contact bridge, and operate together with the two elastic pieces. Two ends of each of the elastic pieces act on the rotor support frame and the adjusting part, respectively. An angle β is formed between a contact surface of the contact end contacting a stationary contact and a length direction of the guiding track, wherein 60° ≤ β ≤ 120°. An angle γ formed arranged between a direction of a force acting on the adjusting part of the elastic piece and the length direction of the guiding track, wherein 60° ≤ γ ≤ 120°. The self-balancing structure capable of balancing pressing forces on a double-break contact bridge in the invention is simple in structure, and can ensure reliable contact of the double-break contact bridge.
A universal circuit breaker energy storage handle anti-jamming apparatus, comprising a circuit breaker body, an operating mechanism mounted at a side of the circuit breaker body, and an energy storage handle mounted on the outer sidewall of a side of the operating mechanism. The energy storage handle is rotated to manually store energy in the operating mechanism. The operating mechanism comprises a V-shaped rotating shaft. One extremity of the V-shaped rotating shaft protrudes the sidewall at a side of the operating mechanism. One extremity of the V-shaped rotating shaft is sleeved with a ratchet linked to the energy storage handle. A cleat linked to the ratchet is provided on the side of the energy storage handle facing the ratchet. The rotation of the energy storage handle drives via the cleat the ratchet to rotate. An anti-jamming structure preventing the cleat and the ratchet from jamming is provided between the cleat and the ratchet. The anti-jamming structure comprises an anti-jamming plate. When the energy storage handle is in an initial state, the anti-jamming plate separates the cleat from the ratchet.
An arc-quenching chamber for use with universal circuit breakers, comprising an arc-isolating wall (1) and a plurality of arc-striking plates (2) installed between two opposing sidewalls of the arc-isolating wall (1), wherein an arc-quenching assembly plate (3) is provided on a bottom portion of the arc-isolating wall (1), a plurality of vent through-holes (301) are provided on a bottom portion of the arc-quenching assembly plate (3), and a total area of the vent through-holes (301) distributed at an end of the arc-quenching assembly plate (3) close to a static bus is smaller than a total area of the vent through-holes (301) distributed at an end far from the static bus. In the arc-quenching chamber for use with universal circuit breakers of the present solution, the structure of the arc-quenching assembly plate (3) is improved upon such that the total area of the vent through-holes (301) distributed at the end of the arc quenching assembly plate (3) close to the static bus is smaller than the total area of the vent through-holes (301) distributed at the end far from the static bus. As a result, air pressure is uniformly distributed inside the arc-quenching chamber, arc-quenching time is reduced, the service life of a circuit breaker is extended, and costs are lowered.
Provided is an interlocked changeover switch electrical appliance, comprising: a first changeover switch electrical appliance (1a), a second changeover switch electrical appliance (1b) and an interlocking mechanism. Each of the first changeover switch electrical appliance (1a) and the second changeover switch electrical appliance (1b) has a common side drive mechanism and a backup side drive mechanism. The interlocking mechanism comprises an array interlocking device and a drawer seat interlocking component, and the array interlocking device enables each driving mechanism and the drawer seat interlocking component to be interlocked. The reliability of power supply is improved.
An interlocking device for a drawer seat, connecting a drawer seat locking member (8) and a drive mechanism for automatic transfer switching equipment. The interlocking device for a drawer seat comprises a bracket (25), a T-shaped lever (11), a driven link (12) and a bias spring. The bracket (25) is mounted on the drawer seat locking member (8). The T-shaped lever (11) is movably hinged to the bracket (25) and has a transverse arm and a longitudinal arm. One end of the driven link (12) is hinged to the end of the longitudinal arm of the T-shaped lever (11), and the other end of the driven link (12) is hinged to the drawer seat locking member (8). The bias spring biases the T-shaped lever (11). Both ends of the transverse arm of the T-shaped lever (11) are connected to the drive mechanism of the automatic transfer switching equipment. The drive mechanism of the automatic transfer switching equipment drives the T-shaped lever (11) to rotate, and by means of the driven link (12), drives the drawer seat locking member (8) to unlock; and the bias spring, by means of the driven link (12), drives the drawer seat locking member (8) to lock.
A direct-acting electromagnetic trip device comprises a housing, and an adjustment mechanism, a linkage mechanism, an electromagnetic system and a trip mechanism that are provided in the housing. The adjustment mechanism is connected to the linkage mechanism, the linkage mechanism is connected to one end of an iron core of the electromagnetic system, and meanwhile the linkage mechanism is connected to the trip mechanism; when there is a trip current in the electromagnetic system, the iron core of the electromagnetic system moves, driving the linkage mechanism, and the linkage mechanism drives the trip mechanism to complete the action of tripping; the adjustment mechanism comprises a rotary knob and an adjustment rod, the rotary knob abuts against and cooperates with the adjustment rod, and the adjustment rod abuts against and cooperates with the linkage mechanism, the electromagnetic system also comprises an elastic member, the elastic member pushing the iron core such that the linkage mechanism abuts against the adjustment rod and the rotary knob abuts against the adjustment rod; rotating the rotary knob can trigger the adjustment rod to move up and down to drive the linkage mechanism to move, such that the linkage mechanism drives the iron core to move up and down, so as to adjust the trip current of a product. The direct-acting electromagnetic trip device has a simple and compact structure, safe and stable performances and is easy to fit.
The present invention discloses a data transmission device of a circuit breaker controller. The data transmission device comprises: a first assembly having a first power supply and a second assembly having a second power supply. The first assembly and the second assembly share a storage device. The second assembly is connected to a main circuit of the circuit breaker controller. The second assembly collects parameters of the main circuit and stores the parameters in the storage device. The second power supply powers the second assembly and is powered by the main circuit. The first assembly is connected to communication equipment. The first assembly establishes data transmission between the communication equipment and the storage device. The first power supply powers the first assembly and is powered by an external power supply. The second power supply is connected to the first power supply and transmits a control signal to the first power supply.
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
An electrically conductive loop of a circuit breaker, comprising: an infeed contact group (121, 122), an outfeed contact group (131, 132) and a conductive assembly (115, 111, 112). The infeed contact group (121, 122) is connected to an infeed terminal (123), while the outfeed contact group (131, 132) is connected to an outfeed terminal (133). The conductive assembly (115, 111, 112) includes a soft-connected assembly (115) and a hard-connected assembly (111, 112); the hard-connected assembly (111, 112) is fixed on a base of the circuit breaker; the soft-connected assembly (115) is connected to the infeed contact group (121, 122) and the outfeed contact group (131, 132); the soft-connected assembly (115) and the hard-connected assembly (111, 112) are connected to provide an electrically conductive loop between the infeed contact group (121, 122) and the outfeed contact group (131, 132). The infeed contact group (121, 122) and the outfeed contact group (131, 132) are mounted coaxially. By combining a soft connection and a hard connection, the electrically conductive loop utilizes the flexibility of the soft connection to render the installation of contact groups more flexible and convenient, and utilizes the hard connection to obtain reliable and stable conductive paths, thus achieving a balance between installation efficiency and installation quality.
A contactor, comprising a base (2). The base (2) is of a stepped structure provided with notches at two ends and comprises a first step (201) and a step (202) from bottom to top. The stepped structure is covered with a cover body (3) matching the shape thereof. Each part, protruding from the second step (202), of two ends of the first step (201) is provided with a first mounting groove. A control terminal (21) and a power supply terminal (22) arranged at intervals are mounted in each first mounting groove. The cover body (3) is provided with a first wiring port (31) corresponding to the control terminal (21) and a second wiring port (32) corresponding to the power supply terminal (22). Two ends of the second step (202) are both provided with a second mounting groove for mounting an auxiliary terminal (23), and the cover body (3) is provided with a third wiring port (33) corresponding to the auxiliary terminal (23) mounted inside the second mounting groove. The structure of the contactor is simple, and wiring areas are distinguished obviously.
A hysteresis power supply circuit, comprising: an input circuit (102), a switch combination circuit (104), a sampling and control circuit (108), a feedback circuit (106) and an output circuit (110). The input circuit (102) is connected to a power supply input terminal, rectifies a power supply input and provides isolation protection for the input terminal. The switch combination circuit (104) is connected to the input circuit (102), and is turned on or turned off for controlling an output power of a power supply output terminal. The sampling and control circuit (108) samples an output voltage, compares the output voltage with a reference voltage, and according to a comparison result, controls the switch combination circuit (104) to be turned on or turned off. The feedback circuit (106) is connected between the switch combination circuit (104) and the sampling and control circuit (108), and the switch combination circuit (104) outputs a positive feedback signal to the sampling and control circuit (108) via the feedback circuit (106), wherein the positive feedback signal causes a comparison action of a reference power supply chip to generate a hysteresis effect. The output circuit (110) is connected to the switch combination circuit (104), filters an output of the switch combination circuit (104) and provides isolation protection for the output terminal, wherein the output thereof serves as an output of a hysteresis power supply circuit.
H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
A conductive loop of a circuit breaker, comprising: a first contact group and a second contact group. The first contact group comprises a first stationary contact (121) and a first movable contact (122), wherein the first stationary contact (121) is connected to a wire inlet terminal (101). The second contact group comprises a second stationary contact (131) and a second movable contact (132), wherein the first movable contact (122) is in conductive connection with the second movable contact (132), the second stationary contact (131) is connected to a tripper (104), and the tripper (104) is connected to a wire outlet terminal (105). The conductive loop of the circuit breaker connects a plurality of movable contacts (122, 132, 222) in a conductive manner, and the plurality of movable contacts (122, 132, 222) are coaxially mounted; and the second stationary contact (131) is connected, across the second movable contact (132), to the wire outlet terminal (105) under the condition of insulation. On the premise of making the whole structure of the circuit breaker compact and the occupation space thereof small, the wire inlet terminal and the wire outlet terminal can be distributed at two sides, so as as facilitate the circuit breaker in wiring with the other electrical devices.
A switching apparatus for a residual-current circuit breaker, comprising: an A-type residual-current detection drive circuit (102), a B-type residual-current detection drive circuit (104), a switching power supply (106), a trip execution circuit (108) and a drive-switching circuit (110), wherein the B-type residual-current detection drive circuit is powered by the switching power supply. The drive-switching circuit detects a power supply voltage of the switching power supply. When the drive-switching circuit detects the power supply voltage, the drive-switching circuit turns on the B-type residual-current detection drive circuit and the trip execution circuit, and the B-type residual-current detection drive circuit drives the trip execution circuit. When the drive-switching circuit does not detect a power supply voltage, the drive-switching circuit turns on the A-type residual-current detection drive circuit and the trip execution circuit, and the A-type residual-current detection drive circuit drives the trip execution circuit. The apparatus may switch between the A-type residual-current detection drive circuit and the B-type residual-current detection drive circuit, according to whether or not a power supply voltage exists, and thus may avoid an occurrence of a false tripping.
Provided is an electromagnetic device for a molded case circuit breaker, the electromagnetic device comprising an electromagnetic mechanism (1) and a regulating mechanism (2) which are connected in a driving manner. The electromagnetic mechanism (1) comprises an iron core (10), an armature (11), a rotating member (12) and a mounting bracket (13), and the armature (11) is connected to a drag rod (3) of the circuit breaker to bring the circuit breaker to trip in the event of a short circuit. One end of the armature (11) is elastically connected to the iron core (10), and the other end of the armature (11) is cocked, so as to form an air gap between the armature and the iron core (10). A cam (21) of the regulating mechanism (2) is mounted on the mounting bracket (13), the middle portion of the rotating member (12) is pivotally mounted on the mounting bracket (13) above the armature (11), and a driving end and a triggering end located at two ends of the rotating member (12) are arranged on a driving surface of the cam (21) and the cocked end of the armature (11) respectively. The cam (21) of the regulating mechanism (2) is rotated to bring both ends of the rotating member (12) of the electromagnetic mechanism (1) to bob with the middle portion as a fulcrum for movement, and the triggering end of the rotating member (12) drives the cocked end of the armature (11) to be able to move up and down relative to the iron core (10). The electromagnetic device for the molded case circuit breaker has a simple structure and is flexible enough to be regulated.
A thermal tripping apparatus for a moulded case circuit breaker comprises a conductive plate (1), an iron core (2) and a bimetallic strip (3), wherein the iron core (2) is a circular iron core structure provided with a through hole (20), the conductive plate (1) runs through the through hole (20) of the iron core (2), and the bimetallic strip (3) is mounted on the iron core (2) and is not in contact with and not connected to the conductive plate (1). The thermal tripping apparatus for a moulded case circuit breaker realizes an energy transfer between the conductive plate (1) and the bimetallic strip (3) using an inductive heating principle of the magnetic conductive iron core (2) in an alternating magnetic field, thereby guaranteeing that the circuit breaker can break a circuit in time when an overload phenomenon occurs. The thermal tripping apparatus for a moulded case circuit breaker is simple in structure and safe, avoids the instability and lack of safety of energy transfer by directly connecting the conductive plate (1) and the bimetallic strip (3), and improves the reliability and safety of a tripping motion of the circuit breaker, and has a wide application range.
An auxiliary means for an operating mechanism; the auxiliary means is connected to a body (101) of the operating mechanism, and comprises: a trigger assembly, a linkage assembly and a reset assembly. The trigger assembly receives a trigger signal. The linkage assembly is connected to the trigger assembly, and the linkage assembly passes the trigger signal to the body of the operating mechanism so as to trip the body of the operating mechanism. The reset assembly is connected to the linkage assembly, and the reset assembly generates a reset signal, such that the linkage assembly passes the reset signal so as to reset the auxiliary means of the operating mechanism. By using a simple structure thereof and by effectively utilizing the original operating characteristics of the operating mechanism, the auxiliary means of the operating mechanism may achieve breaking, closing, tripping, resetting and isolating functions, as well as implement said functions by using different locations of an operating handle and different positions of a tripping and isolation button, thereby obtaining clear instructions. By reusing structural parts, the present invention not only saves costs, but also avoids multiple connection of a modular structure, thus improving reliability of the product.
A miniature circuit breaker comprises a housing having an air outlet. A plurality of arc splitter plates are installed in an arc chute. The arc chute is fixedly connected to the housing. An air discharge opening is provided on a back plate of the arc chute. A back arc splitting structure is disposed between the air discharge opening of the arc chute and the air outlet of the housing. The back arc splitting structure comprises a plurality of air flow channels disposed between the air discharge opening of the arc chute and the air outlet of the housing to enable high-temperature air flows first to pass through the air discharge opening and the plurality of air flow channels and then to be discharged from the air outlet. The embodiment prevents the air flows flowing out between the arc splitter plates from interrupting with each other, can effectively prevent hot air flows from interrupting with each other at the air outlet, and quickly dissipate heat energy, thereby quickly extinguishing electric arcs, enhancing an arc extinguishing capability of an arc extinguishing system and a current interruption capability of the circuit breaker, and reducing a size of the arc chute.
An internal feedback apparatus for control and protection of an electrical switching device comprises a bracket (101), a contact supporting member (102), static contact bracket groups (104, 105), and a housing. The contact supporting member (102) is mounted in the bracket (101). The contact supporting member (102) is provided with moving contacts. The static contact bracket groups (104, 105) are provided with static contacts. The moving contacts and the static contacts form a contact group. The bracket (101), the contact supporting member (102) and the static contact bracket groups (104, 105) are accommodated in the housing. The contact supporting member (102) is provided with a switching mechanism (121). The switching mechanism (121) extends out of the housing and drives, by means of a switching structure, movement of the contact supporting member (102), so as to change the state of the contact group. The apparatus uses direct connection type feedback, which is different from the conventional lever structure; the apparatus is disposed in the switching device, thus allowing for small volume, convenient wiring and fewer transmission links. The apparatus is also directly connected to an execution mechanism, thereby improving the reliability of signal transmission.
An electrical switch making and breaking mechanism, connected in an electrical switch loop and comprising: a pull rod (101), a contact support member (102), a connecting rod (103), a contact bridge (104) and a sliding block (105). The contact bridge is mounted on the sliding block; the connecting rod is rotatably connected to the sliding block; the contact bridge is positioned between the connecting rod and the sliding block; the contact support member is hollow, having internally a positioning hole; the contact support member is mounted over the sliding block and the contact bridge; the connecting rod is accommodated in the positioning hole of the contact support member; and the pull rod is connected to the connecting rod. The contact bridge is connected to an inlet terminal (205) and an outlet terminal (206) of the loop, making the loop. Operating the contact support member causes the contact bridge to separate from the inlet terminal and outlet terminal of the loop, breaking the loop; or, electrodynamic repulsion repels the contact bridge from the inlet terminal and outlet terminal of the loop, breaking the loop, while the contact support member maintains the loop in a broken position. Different components of the making and breaking mechanism execute ordinary making and breaking, non-short circuit fault breaking and short circuit fault breaking, allowing for upkeep of the mechanical strength, service life and breaking speed of the mechanism.
A rotary shaft device of a circuit breaker, comprises a plurality of contact supports (1), each installed with a moving contact (8), and a rotary shaft (2) for moving the plurality of contact supports (1) in a linked manner, an operation mechanism (9) driving the plurality of contact supports (1) to rotate synchronously to drive the moving contacts (8) to contact a stationary contact or separate therefrom, so as to realize the closing and breaking of a circuit breaker; the radial cross section of the rotary shaft (2) is a parallelogram, and the contact support (1) is provided with a shaft groove (111) having a V-shaped structure for installing the rotary shaft (2); the rotary shaft device also comprises a clamping piece (3) provided with a fixing groove (30) having a V-shaped structure; the fixing groove (30) having the V-shaped structure and the shaft groove (111) having the V-shaped structure are provided corresponding to each other, the contact supports (1) are fixedly connected to the clamping piece (3) to fix the rotary shaft (2) in the space surrounded by the shaft groove (111) and the fixing groove (30), the shaft groove (111) cooperates with two adjacent side surfaces of the rotary shaft (2), and the fixing groove (30) cooperates with the other two adjacent side surfaces of the rotary shaft (2), such that the plurality of contact supports (1) can be moved in a linked manner, by means of the rotary shaft (2), in a stable and secure manner.
Provided are a circuit-breaker controller and control method, comprising: a data-read and signal-detection step (S102); reading data from a fast-read storage device, and detecting an MCR/HSISC state signal by means of an MCR/HSISC detection circuit; a function selection step (S104); selecting whether to execute an MCR function or an HSISC function, said selection being made on the basis of whether a jump is present in the MCR/HSISC signal; executing the MCR function (S106) or executing the HSISC function (S108); if the conditions for execution are satisfied, then performing a trip, and ending the process; if a termination condition is encountered during the process of execution, then ending the process. Also provided is a circuit-breaker controller for implementing the described control method. The circuit-breaker controller and control method use software to perform the MCR/HSISC functions, and have an advantage in terms of cost of implementation and detection stability; the controller is provided with an MCR/HSISC detection circuit and a fast-read/write storage-device circuit, allowing for fast startup of the controller and fast writing prior to power loss.
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
Provided is a circuit-breaker temperature acquisition device, comprising a sensor (1), a current transformer (2), and a busbar (3); said current transformer (2) is provided with a mounting through-hole (210) used for mounting the busbar (3); the busbar (3) is arranged to pass through the mounting through-hole (210). The sensor (1) is mounted inside the current transformer (2) and arranged opposite to the busbar (3) in the mounting through-hole (210); the current transformer (2) is provided with a contact tab (4); said contact tab (4) is connected to both the sensor (1) in the current transformer (2) and the busbar (3) in the mounting through-hole (210); the sensor (1) acquires the temperature on the busbar (3) by means of the contact tab (4). Provided is a circuit-breaker temperature acquisition device that measures accurately, is simple to install, and has stability in operation.
An operation mechanism for a miniature circuit breaker comprises a handle, a driving connecting rod, a stationary contact and a moving contact, and further comprises a tension spring and a trip lever. One end of the driving connecting rod is hinged to the handle, and the other end of the driving connecting rod matches with the moving contact. One end of the tension spring is fixed to a housing, and the other end of the tension spring is connected to the moving contact. The moving contact is driven by the tension spring and the driving connecting rod together to provide a contact pressure and an overstretching elastic force required for ensuring the reliability of electrical contact for connecting the moving contact and the stationary contact. In addition, the tension spring provides an energy storage elastic force required for resetting the mechanism for disconnecting the moving contact from the stationary contact. The trip lever is disposed on the moving contact, and is configured to control locking and unlocking between the driving connecting rod and the moving contact. When a fault occurs, the trip lever separates the driving connecting rod from the moving contact to automatically release the operation mechanism. The mechanism can effective simplify the structure, reduce the manufacturing cost, improve the production efficiency, and optimize the mechanical performance.
A breaker, comprising a base (1) and a cover, the front face of the end to be wired of the base (1) being provided with a first counterbore (31), the undersurface of the end to be wired of the base (1) being provided with an annular second counterbore (32), a hollow boss (3a) being formed between the first counterbore (31) and the second counterbore (32), the first counterbore (31) being located on the boss (3a). When the breaker is used for front-panel wiring, a terminal screw is positioned in the first counterbore (31) for electrical insulation; and when the breaker is used for back-panel wiring, the boss (3a) is removed by means of an external force, and the terminal screw is positioned in the second counterbore (32) for electrical insulation. Therefore, the breaker has the characteristics of compact structure and low production cost, and can also reduce the stock material in work; in addition, the breaker has better insulation effect.
Provided is a plug locking device of a surge protection device. A plug module (101) of the surge protection device is locked on a base (102), and the plug locking device comprises a clamping plate (203), an elastic member (202) and a clamping slot (205). The clamping plate (203) is installed on a shell (201) of the plug module (101), and a bottom end of the clamping plate (203) is provided with a hook (234). The elastic member (202) is installed between the clamping plate (203) and the shell (201) of the plug module (101), and the elastic member (202) applies an elastic force to the clamping plate (203), such that there is a tendency that the clamping plate (203) stretches outwards from the shell (201) of the plug module (101). The clamping slot (205) is located on a shell of the base (102). The hook (234) is embedded in the clamping slot (205). The elastic member (202) acts upon the clamping plate (203) and locks the hook (234) in the clamping slot (205). The plug module (101) is locked on the base (102). The hook (234) withdraws from the clamping slot (205), so that the plug module (101) and the base (102) are unlocked. The plug locking device of the surge protection device uses the elastic member to provide the elastic force to the clamping plate, which avoids using the elastic force resulting from deformation of the clamping plate itself. The elastic force provided by the elastic member is more stable, and the clamping plate does not need to be in a deformation state for a long time, which aids in increasing the service life of the clamping plate.
An alternating-current contactor comprises a base (1) and a yoke (4). The yoke (4) is mounted on the bottom plate of the base (1). Both sides of the yoke (4) are provided with a yoke supporting member (41) used for supporting and cushioning the yoke (4). Thicknesses of sidewalls at two sides of at the connection position of the yoke supporting member (41) and the yoke (4) are different. The yoke supporting member (41) for the alternating-current contactor has a simple structure by using an arrangement of an asymmetric eccentric structure. The position of the yoke (4) relative to the bottom plate of the base (1) in the vertical direction is adjusted by changing the assembling direction of the yoke supporting member (41), so as to achieve the objective of adjusting the production assembly; the flexibility is high, and an adjustment amount can be provided when the size of a plastic member housing is abnormal, so that the whole assembly of the product can be ensured, thereby improving the efficiency and the reliability.
The invention discloses an overload protection mechanism with long delay, connected in a circuit , and comprising a thermal deformation element and a trigger assembly. The thermal deformation element is connected in the circuit in series and comprises a first working surface (A) and a second working surface (B) which are not parallel. The trigger assembly is attached to a tripping mechanism and comprises a first trigger component and a second trigger component capable of moving in a translating motion relative to the thermal deformation element such that the trigger component and the thermal deformation element are in different relative positions. When no overload current exists in the circuit, the thermal deformation element and the trigger assembly are separated. When an overload current occurs, the thermal deformation element bends. Depending on the position of the trigger components relative to the thermal deformation element, the first working surface (A) comes in contact with the first trigger component or the second working surface (B) comes in contact with the second trigger component, causing the trigger component to trigger the release of the tripping mechanism, wherein either the first working surface (A) and the first trigger component or the second working surface (B) and the second trigger component are in contact, while the other is separated.
A button switch operating mechanism comprises a nut (5), a thread bushing (4), and a button assembly mounted between the thread bushing (4) and the nut (5). The button assembly comprises a button, a push rod (3), and a spring (10). The push rod (3) is sleeved in the spring (10). The button and the push rod (3) are mounted in the thread bushing (4). One end of the button is connected to the push rod (3), the push rod (3) can be driven by rotating the button to move up and down to shift a gear, and a detachable clamping plate capable of limiting the button from rotating is arranged in the thread bushing (4) to achieve multiple gear-shifting functions. The mechanism is provided with the detachable clamping plate arranged in the thread bushing, and by the cooperation of the clamping plate and the button, multiple gear-shifting functions of the button switch operating mechanism are achieved by means of one assembly.
An air circuit breaker comprises a circuit breaker body. The circuit breaker body comprises a body base and an operation mechanism (1) disposed on one side of the body base. The body base comprises a base frame (2) and a base substrate (3) buckling each other. The operation mechanism is disposed on the outer side of the base frame. The circuit breaker body further comprises a current transformer (5), the current transformer being disposed on the outer side of the base substrate. According to the air circuit breaker, a current transformer is disposed on the outer side of a base substrate, so the current transformer is convenient to assemble, the production cost is reduced, and moreover, the current transformer is convenient and quick to disassemble and maintain. A stationary bus mounting cavity and a transformer mounting cavity are provided along the base substrate vertically, hierarchically and oppositely, thereby reasonably utilizing an internal space of the base substrate.
An arc extinguish chamber of an air circuit breaker comprises two arc separation walls (2) and arc chutes (1) mounted in the arc separation walls, the two arc separation walls being connected together. The arc extinguish chamber further comprises an extension plate (3), the extension plate is located between the two arc separation walls, and the two arc separation walls can be connected together via the extension plate. The extension plate may comprise a first extension plate (31) and a second extension plate (32) independent of each other, the first extension plate and the second extension plate connecting and fixing two ends between separation plates (22) of the two arc separation walls. According to the arc extinguish chamber of the air circuit breaker, extension plates are added between two arc separation walls, the two arc separation walls can be spliced with the extension plates having different widths to change the width between the two arc separation walls so as to adapt to buses having different widths, thereby improving the universality of the arc separation walls of the arc extinguish chamber, reducing the mold opening difficulty and period of the arc extinguish chamber, and reducing the development and production costs.
A circuit breaker and an exhaust structure thereof. The circuit breaker comprises an exhaust port (101, 102, 103). The exhaust port is aligned with the tail of an arc extinguish chamber (106). An exhaust space of the exhaust port is overlapped with a junction device (401, 402) of the circuit breaker. In case of non-junction, the junction device occupies the exhaust space. In case of junction of the junction device, the exhaust space is emptied. The exhaust structure of the circuit breaker utilizes an unoccupied space of the junction device, increases the quantity of exhaust ports, and expands the exhaust space, thereby significantly improving the exhaust capability. The exhaust structure is also provided with a partition protrusion (104) for partitioning an electric arc, the partition protrusion achieves the function of supporting the arc extinguish chamber, and the arc extinguish capability is prevented from being reduced due to impact shifting of the arc extinguish chamber.
Disclosed are a circuit-breaker and a baffle (101) thereof. Baffles are provided at two sides of a shell (103) of a circuit-breaker, wherein a baffle at one side is located inside an arc angle (102) of a static contact, and the baffle cuts off a space inside the arc angle of the static contact, and the baffles at the two sides have a symmetrical structure. The baffles can solve the problem that high-temperature gas returns from a side face of an arc angle of a static contact to a place between a moving contact and the static contact during a short circuit breaking process, thereby driving a voltaic arc to repeatedly move between running arcs, and causing excessively long breaking time and serious burn damage to an end tab and a moving/static contact; and the baffles can effectively cut off an airflow and a voltaic arc, so that the voltaic arc can better enter an arc extinguish chamber to extinguish an arc, the breaking time is shortened, and the breaking effect is good.
An electromagnetic trip device, only comprising an iron core assembly (101), a contact plate (102), a coil assembly (103), a magnet yoke (104) and a contact assembly (105), wherein one end of the iron core assembly, which is far away from the contact assembly, is attachable and detachable, and a spring (113) in the iron core assembly can be changed. The iron core assembly only comprises: an insulating sleeve (111), a static iron core (112), a push rod (114), the spring (113), a movable iron core (115) and a clamping plate (116), wherein the static iron core is fixed on a first end of the insulating sleeve, and the first end is close to the contact assembly; the spring is sleeved on the push rod; the static iron core, the push rod, the spring, the movable iron core and the clamping plate are successively provided on the first end to a second end of the insulating sleeve, and the second end is far away from the contact assembly; and the clamping plate is attachably and detachably mounted on the second end of the insulating sleeve. The present invention also relates to an assembly method for an electromagnetic trip device. The electromagnetic trip device only comprises an iron core assembly, a contact plate, a coil assembly, a magnet yoke and a contact assembly, wherein one end of the iron core assembly, which is far away from the contact assembly, is attachable and detachable. The assembly method comprises: detaching a spring from one end of an iron core assembly, which is far away from a contact assembly, and changing same.
A smart circuit breaker controller comprises a cover board (1) and a base (2). The cover board (1) is mounted on the base (2). A display module (210) is installed in the base (2), configured to indicate a state and correspond to a display installation hole (110) open on the cover board (1). The display installation hole (110) is provided with a detachable display component board (120) therein. The embodiment provides a smart circuit breaker controller having enhanced universality, a simple installation procedure, and increased utilization efficiency.
A surge protection device base (121) comprises: a first housing (101), a second housing (102) and a third housing (103). The first housing (101) has at least one first structure thereon. The second housing (102) has at least one second structure thereon. The third housing (103) has at least one first structure and at least one second structure thereon. The first structure is located at a second half side of the third housing (103) while the second structure is located at a first half side of the third housing (103). One first housing (101), one or more third housings (103) and one second housing (102) are joined to one another to form a multi-stage surge protection device base (121). The first housing (101) and the first half side of the third housing (103) adjacent thereto constitute a single-stage surge protection device base (121), the second half side and the first half side of the two adjacent third housings (103) constitute a single-stage surge protection device base (121), and the second housing (102) and the second half side of the third housing (103) adjacent thereto constitute a single-stage surge protection device base (121).
A fan monitoring method for a frame circuit breaker. A fan is used for heat dissipation of the frame circuit breaker. The fan monitoring method comprises: collecting a real-time temperature of a frame circuit breaker; looking up a temperature and rotational speed comparison table according to the real-time temperature and determining rotational speed data corresponding to the real-time temperature; generating a driving signal according to the rotational speed data, and the driving signal driving a fan to rotate; collecting a real-time rotational speed of the fan and generating a feedback signal; and based on the real-time temperature, the rotational speed data and the feedback signal, determining the working state of the fan. Also disclosed is a fan monitoring apparatus for a frame circuit breaker, which executes the monitoring method. In the present invention, the temperature, driving rotational speed and actual rotational speed of a frame circuit breaker are comprehensively considered, which solves the problem of fan reliability when the frame circuit breaker uses a fan to perform forcible heat dissipation.
A mount structure for an energy storage component of a circuit breaker, comprising an energy storage lever (42) and an energy storage spring (48). One extremity of the energy storage lever (42) is an energy storage extremity connected to the energy storage spring (48). The other extremity of the energy storage lever (42) is an actuating extremity and an external force can be applied to the actuating extremity make the energy storage lever (42) to rotate around the lever pivot at the middle of the lever, thus compressing the energy storage spring (48) at the energy storage extremity to complete energy storage. One extremity of the energy storage spring (48) is connectively mounted with the energy storage lever (42), while the other extremity is mounted within a base frame (46). An energy storage mount shaft (41) that can serve as the rotation pivot is also provided at the middle of the energy storage lever (42). The force is applied to the actuating extremity to make the energy storage lever (42) rotate around the energy storage mount shaft (41). The mount structure for energy storage component of the circuit breaker has a simple mounting process, stable connection structure, and strong assembly accuracy.
A circuit breaker interlinking apparatus comprises a control component (6) and an interlocking component (7) that are drivedly connected with each other. The control component (6) can be lockedly connected with a connecting rod component (2) and a cam component (3) of an energy storage operating mechanism (99) of the circuit breaker, thus controlling the energy storage operating mechanism (99) to complete circuit opening/closing operations. A breaker-opening lock (62) of the control component (6) is connected with the connecting rod component (2). A breaker-closing lock (64) is connected with the cam component (3). A breaker-closing guide rod (72) of the interlocking component (7) is drivedly connected with the control component (6) to make the breaker-closing lock (64) move. A circuit opening guide rod (73) is drivedly connected with the control component (6) to make the breaker-opening lock (62) move. One extremity of a breaker-closing half-shaft (63) is drivedly connected with the breaker-closing lock (64), while the other extremity is arranged opposite a drive guide rod (74). The circuit breaker interlocking apparatus is structurally compact, controls accurately, and moves stably.
A circuit breaker energy storage operating mechanism comprising a side panel component (1), a connecting rod component (2), a cam component (3), an energy storage component (4), a shaft component (5), and a control component (6). A rotatable driving shaft (30) is mounted within the side panel component. The connecting rod component and the cam component are mounted on the driving shaft. The energy storage component and the shaft component are mounted on a same side of the driving shaft. The control component is mounted at the other side of the driving shaft. The connecting rod component is connected with the shaft component. The cam component can be in contact and connection with the energy storage component to push the energy storage component to store energy. The control component can be locked and connected with the connecting rod component and the cam component. The circuit breaker energy storage operating mechanism is structurally compact and highly reliable.
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
A circuit breaker tripping mechanism comprising a connecting rod component (2) and a control component (6). One extremity of the connecting rod component (2) is drivedly connected to a shaft component (5) used for driving a circuit breaker into opening. A tripping buckle (21) locked and connected with the control component (6) is provided at the other extremity of the connecting rod component (2). Also, a U-shaped groove (213) is provided on the tripping buckle (21). The control component (6) comprises a rotatably mounted breaker-opening lock (62). An extremity of the breaker-opening lock (62) can be locked and limitedly connected with the U-shaped groove (213); also, when the circuit breaker opens, the extremity of the breaker-opening lock (62) is triggered to be detached from the U-shaped groove (213), thus allowing the rotary shaft component (5) connected to the connecting rod component (2) to drive the circuit breaker into opening. The circuit breaker tripping mechanism locks stably, is structurally simple, and moves accurately.
An energy storage operating mechanism for a circuit breaker, comprising a handle (81) mounted on a drive shaft (30), a ratchet wheel (87) and a cam assembly (3) also being fixedly mounted on the drive shaft, the ratchet wheel being in contact communication with an energy storage assembly (4) of the circuit breaker; the handle can, by means of the ratchet wheel, cause the drive shaft to rotate and thereby drive the cam assembly to drive the energy storage assembly to implement energy storage; and a first pawl (83) engaging with the saw teeth on the edge of the ratchet wheel is mounted on the handle. The present energy storage operating mechanism for a circuit breaker is flexible to use, and has a stable structure and reliable action.
A failure state indication device for a circuit breaker, comprising a contact group, a transmission assembly and an indication assembly which are mounted inside a housing. The contact group is realized by a normally open contact group and a normally closed contact group. The transmission assembly acts on a contact support member (107), so as to realize different open and closed states of the contact group via the contact support member. The indication assembly indicates a failure state, and the indication assembly is linked with the circuit breaker, responds to a failure and carries out corresponding state indication. The failure state indication device for a circuit breaker has a more simple and reliable design structure, has a manufacturing process which is easier to implement, and can not only indicate the state and type of a load line failure, but also can judge the operation state of the circuit breaker by means of the contact group.
An indication device of an electric switch comprises an indication member (101), drive component (103) and a position-holding component (102). The indication member (101) has at least three indication positions. Each of the indication positions corresponds to one state of the electric switch, and the indication member (101) shows one indication marker at each indication position. The indication device of an electric switch uses one single indication member (101) having at least three indication positions, and the third position is provided via deformation of the indication member (101) itself, thus realizing a simpler structure and lower manufacturing cost.
A circuit breaker housing (101). An opening (105) provided on the housing is covered by a cover plate (102); the cover plate is mounted on the housing, and does not exceed the original outer contour of the housing; a modular component (104) is mounted inside the housing through the opening. According to the circuit breaker housing, the modular component can be replaced conveniently by means of the cover plate and the opening, removing of rivets is avoided, and a large amount of labor and time cost can be saved.
H01H 73/02 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel - Détails
An operating mechanism (107) of a circuit breaker, comprising: a tripping component (100), a left side plate component (101), a right side plate component (104), a latch component (102), a half shaft component (103), a lever component (105) and a main shaft component (106). The tripping component, the latch component, the half shaft component and the lever component are mounted between the left side plate component and the right side plate component. The main shaft component runs through the left side plate component and the right side plate component and extends out of the left side plate component and the right side plate component. The lever component comprises a sheet metal bending piece (228), the sheet metal bending piece being bent to form a top wall and two side walls. The tripping component, the latch component, the half shaft component, the lever component and the main shaft component are linked. The tripping component and the latch component form secondary latch. The operating mechanism of a circuit breaker is a manual operating mechanism. Contact parameters are transferred based on an external metal main shaft, thereby ensuring the uniformity of the contact parameters, and reducing the cost and the process difficulty. The operating mechanism has assembly convenience, the performance of the operating mechanism can be effectively improved, and requirements of a high-performance circuit breaker are met.
A fusion welding isolation mechanism for an operating mechanism (107) of a circuit breaker. The operating mechanism of a circuit breaker comprises a tripping component (100), a left side plate component (101), a right side plate component (104), a latch component (102), a half shaft component (103), a lever component (105) and a main shaft component (106). The tripping component, the latch component and the lever component are mounted between the left side plate component and the right side plate component. The half shaft component and the main shaft component run through the left side plate component and the right side plate component and extend out of the left side plate component and the right side plate component. The tripping component, the latch component, the half shaft component, the lever component and the main shaft component are linked, wherein isolation devices are provided on the lever component and the main shaft component, and the isolation devices limit, during fusion welding of a moving contact (110), an operating handle (230) so as to make the operating handle unable to perform opening. The fusion welding isolation mechanism can limit, in the case of fusion welding of a moving contact, a stroke of rotating of an operating mechanism to an opening direction, so as to protect the operating mechanism from being damaged due to a forced operation. After an external force disappears, the operating mechanism can self-return to a closing position.
A secondary latch mechanism for an operating mechanism of a circuit breaker. The operating mechanism (107) comprises: a tripping component (100), a left side plate component (101), a right side plate component (104), a latch component (102), a half shaft component (103), a lever component (105) and a main shaft component (106). The tripping component, the latch component and the lever component are mounted between the left side plate component and the right side plate component. The half shaft component and the main shaft component run through the left side plate component and the right side plate component and extend out of the left side plate component and the right side plate component. The tripping component, the latch component, the half shaft component, the lever component and the main shaft component are linked. The tripping component comprises a trip, a second end of the trip having a latch surface. The latch component comprises a sheet metal piece (219) rotating around a rotating shaft (217) and a bearing (221) mounted on the sheet metal piece. The bearing is in contact with the latch surface, and the latch component limits the tripping component. The half shaft component comprises a half shaft (223), the sheet metal piece is in contact with the half shaft, and the half shaft component limits the latch component. The tripping component, the latch component and the half shaft component form a secondary latch mechanism.
A thermomagnetic protection device applicable to a multi-pole breaker. The thermomagnetic protection device comprises: a housing, a multi-pole protection unit (105), an energy-storing component (106) and an adjustment component (107). The housing comprises an upper housing (111) and a base (112). The multi-pole protection unit is installed inside the housing, and comprises a plurality of thermomagnetic protection devices. Each thermomagnetic protection device corresponds to one pole of the multi-pole breaker. Each thermomagnetic protection device comprises a thermal protection component (102) and a magnetic protection component (103). The multi-pole protection unit comprises a rod (501), and the rod adjusts an air gap of the magnetic protection component. The energy-storing component is disposed inside the housing, and engages with the thermal protection component. When an overload current occurs in the energy-storing component, the thermal protection component triggers and strikes an operation mechanism of the breaker. The adjustment component is installed on the housing, and engages with the rod and the energy-storing component. The adjusting component adjusts the overload current by means of adjusting the distance between the energy-storing component and the thermal protection component, thus regulating transient current by means of adjusting the rod.
A contact device having a rotatable fixed contact of a breaker, the contact device comprising a fixed contact (10) and a fixed contact bracket (40); the fixed contact (10) is embedded and mounted in the fixed contact bracket (40), and a limiting member for restricting the fixed contact (10) to move along an axial position is provided on the fixed contact bracket (40); the fixed contact (10) is rotatable about a central shaft (71) provided on the fixed contact bracket (40), and a fixed contact spring (50) for restricting the fixed contact (10) to rotate is provided in the fixed contact bracket (40), the fixed contact spring (50) being connected to the fixed contact (10) to secure the fixed contact (10). The fixed contact (10) is rotatably mounted on the fixed contact bracket (40), and a repulsive force is generated on the contact for enabling a movable contact and the fixed contact (10) to rotate simultaneously, thus elongating an arc to accelerate arc quenching of the arc; and the limiting member formed on the fixed contact bracket (40) can effectively prevent the fixed contact (10) from moving along an axial direction of the shaft body, so as to ensure the contact area of the movable contact and the fixed contact, thus effectively reducing assembly difficulty, and improving assembly efficiency.
A contact device of a breaker and having a flippable static contact, the contact device comprising: a static contact (10) embedded inside a static contact holder (40), and a static contact spring (50) and a positioning shaft (70) for installing the static contact spring (50) are disposed inside the static contact holder (40), and a shaft passing through the static contact (10) is also disposed inside the static contact holder (40). The shaft comprises a central shaft (71) passing through the rotation axis of the static contact (10), a bearing shaft (21) passing through the static contact (10) and restricting the static contact spring (50), and the static contact spring (50) sleeves the positioning shaft (70), and spring arms extending from both ends engages the bearing shaft (21) passing through the static contact (10). The static contact (10) is rotatably mounted on the static contact holder (40), and a repulsive force is generated on the contact to enable a moving contact and the static contact to flip at the same time, thus elongating an electric arc and accelerating the extinguishing of the electric arc. A stepped face passing through the shaft of the static contact (10) restricts the two sides of the static contact (10) to effectively prevent the static contact (10) from moving in the axial direction of the shaft, thus ensuring a contact area between the static contact and the moving contact, effectively reducing assembling difficulty and improving assembling efficiency.
Disclosed is a circuit breaker locking device, comprising an actuating lever (1) and a pressure plate (2), wherein the actuating lever is mounted in a base (3) of a circuit breaker in a hole shaft rotation manner, an elastic component (111) is arranged between one end of the actuating lever and the base, the other end of the actuating lever is provided with a locking end (120) capable of being in locking connection with a locking part (210) at one side of the pressure plate, the pressure plate is mounted in the base and can rotate and swing relative to the base, the locking part at one side of the pressure plate comprises an unlocking face (211) and a locking face (212) respectively corresponding to the locking end, the unlocking face and the locking face are adjacent to each other and a slide step (213) is arranged therebetween, the other side of the pressure plate is provided with a contact part (220) capable of being in contact connection with an operating mechanism of the circuit breaker, and a magnetic flux (5) capable of driving the pressure plate to swing is correspondingly arranged above the pressure plate. The circuit breaker locking device is firm in locking structure, stable in motion, and simple in mechanical structure.
H01H 71/62 - Mécanismes à réarmement manuel avec des moyens pour empêcher le réarmement pendant l'existence de conditions anormales, p.ex. dispositions à poignée libre
A time relay socket comprises a shell (1), a cover plate (2), and eight conducting sheets (3). The shell is provided with eight jacks (14), each jack corresponds to one conducting sheet, and insertion sleeve ends (3b) of the eight conducting sheets correspond to the eight jacks. The conducting sheet is located in a cavity between the shell and the cover plate, each end of two ends of the cover plate is provided with four wiring seats (21), one cover plate screw seat (25), and two insulation baffles (22). The cover plate screw seat separates four wiring seats at the same end into two groups, two wiring seats of each group are separated by the convex insulation baffle on the cover plate, and wiring ends (3a) of the conducting sheets are mounted on the wiring seat. Each of two ends of the shell is provided with two sunken hole grooves (11) and one shell screw seat (15), the shell screw seat is located between two hole grooves at the same end and separates the two hole grooves at the same end, and one group of two wiring seats provided with one insulation baffle and provided with two wiring ends is accommodated in the sunken space of each hole groove. Therefore, a harmful gap can be avoided, the safety level is improved, and voltage resistance is strong.
H01R 13/53 - Socles ou boîtiers pour dures conditions de service; Socles ou boîtiers avec des moyens pour éviter l'effet couronne ou l'amorçage d'un arc
H01R 13/40 - Fixation des pièces de contact dans ou sur un socle ou un boîtier; Isolement des pièces de contact
A multi-pole double-breakpoint plastic-shell circuit breaker. Multiple single-pole circuit breaking unit (30) are disposed inside an insulation shell,. A contact system and a matching arc-extinguishing system are disposed inside a unit plastic-shell of each single-pole circuit breaking unit (30). A contact system of each pole comprises two fixed contacts (14, 16) arranged opposite and one bridge-shaped movable contact (20), and each bridge-shaped movable contact (20) is installed on one contact support (17, 18). Each arc-extinguishing system comprises two symmetrically disposed arc-extinguishing chambers (6, 9). Outer rings of multiple roller bearings (19) are fixedly installed on a separating wall (g) by using a bearing mechanism. An inner ring of a roller bearing (19) is directly linked to contact supports (17, 18) in a manner of interference fit. Two adjacent contact supports (17, 18) are directly inserted and linked in a manner of interference fit. One cylindrical cavity (b) for receiving the contact supports (17, 18) is disposed between two arc-extinguishing chambers (6, 9) of the unit plastic-shell of each single-pole circuit breaking unit (30). By means of the multi-pole double-breakpoint plastic-shell circuit breaker, not only high sensitivity and high precision of rotation supported by each contact are ensured, but also precision and synchronization requirements can be ensured through processing relying on precision of only a mold.
A circuit breaker drawer base position-indicating apparatus, comprising a main body switch (3) detachably mounted on the circuit breaker on the guide rail (22) of the drawer base (2), and a handle screw rod assembly which drives the main body switch (3) in linear motion along the guide rail (22) until the switch is at each of three positions with respect to the drawer base (2): separated, test, and connected; also comprised are a position-indicating assembly (1), and an indication drive member (4) fixed on a small side panel of the main body switch; the position-indicating assembly (1) comprises three contact switches (12, 13, 14) and three pairs of forward-blocking and reverse-blocking lugs (12a, 12b, 13a, 13b, 14a, 14b), separately fixed on the fixing plate (11) of a large side panel (21) of the drawer base (2), and separation, test, and connection levers (15, 16, 17) pivotally mounted on the fixing plate (11) by means of a rotation secondary structure. When the main body switch (3) moves to each of the three operating positions, an implementing shaft pin (41) on the indication drive member (4) separately strikes and fits with the lever (15, 16, 17) corresponding to the position-indicating assembly (1), so as to drive the separation lever (15) to touch-fit the separation contact switch (12), drive the test lever (16) to touch-fit the test contact switch (13), and drive the connection lever (17) to touch-fit the connection contact switch (14).
A breaker counting device, comprising a counter (2) and an execution lever (4); the counter (2) is fixedly installed at one side of an operation mechanism (6) of the breaker; the execution lever (4) is pivotally installed at one side of the operation mechanism (6), and has respective driving connections with a counting lever (201) of the counter (2) and a linkage rotation shaft (600) extending from the operation mechanism (6); the execution lever (4) is provided with a reset spring (5) thereon for providing a restoring rotation force for the execution lever (4); one end of the execution lever (4) has a driving connection with the counting lever (201) via a connection rod (3), and the other end of the execution lever (4) is in a sliding contact with a suspension arm (610) extending from an end portion of the linkage rotation shaft (600); one end of the connection rod (3) is connected to the execution lever (4), and the other end is connected to the counting lever (201); and the suspension arm (610) is driven to rotate by the operation mechanism (6), and drives the execution lever (4) to rotate, such that the connection rod (3) moves to pull the counting lever (201) to complete counting. The device counts accurately, is stable, and has a simple structure.
A contact device of a breaker, comprising a rotating shaft (10), two pressing plates (30) provided in a contact installation hole of the rotating shaft (10), and two contact blades (50) provided side by side; one end of each of the two contact blades (50) having a movable contact passes through the contact installation hole, and the other end is connected to the rotating shaft (10); two pressure-bearing shafts (100) are provided at one end of each of the two contact blades (50) connected to the rotating shaft (10); each pressure-bearing shaft (100) comprises a first cylinder (111), and a second cylinder (112) fixedly connected to one end of the first cylinder (111); a joint of the second cylinder (112) and the first cylinder (111) is formed as a stepped surface (101), and the area of the stepped surface (101) is greater than the area of the cross section of the first cylinder (111); the second cylinders (112) of the two pressure-bearing shafts (100) are provided between the two contact blades (50); and the end surfaces of the two second cylinders (112) contact for positioning, and the first cylinders (111) of the two pressure-bearing shafts (100) respectively pass through the two contact blades (50) based on the limit of the stepped surface (101) and extend to external portions of the contact blades (50) to cooperate with working surfaces (301) of the two pressing plates (30). The contact device of the breaker has a simple structure and reliable performance, and is convenient to machine and assemble.
H01H 1/50 - Moyens pour accroître la pression de contact, empêcher la vibration des contacts, maintenir ensemble les contacts après l'entrée en contact, ou pour ramener les contacts à la position d'ouverture
An operation mechanism of a breaker, comprising: a fixed contact (10), a moving contact (9) provided on a contact support (5), and an operation handle (2) supporting and linked with the contacts; the rotation shaft of the moving contact and the rotation shaft of the contact support are concentric; and the moving contact is fixedly connected to the contact support via an elastic component (13), and rotates relative to the contact support. The operation mechanism of a breaker increases the response speed of the moving contact.
A current transformer, comprising a closed magnetic circuit and secondary windings. The closed magnetic circuit branches at a second part to form a plurality of branch magnetic circuits. Each branch magnetic circuit has a secondary winding formed thereon and is used as a magnetic core of the corresponding secondary winding. The secondary windings are mutually staggered in at least one direction of length, height and thickness. Multiple secondary windings are arranged in a spatially staggered manner by using unused space of the current transformer, so that total energy output by the current transformer is significantly increased and performance at small current is improved.
A controller for an alternating current contactor. The controller comprises: a filtering and rectification circuit (101, 102), which filters and rectifies external alternating current; an electromagnet component (103), which is driven by the output of the filtering and rectification circuit and performs an attraction, holding or releasing action; a power transistor circuit (104), which is connected to the electromagnet component; and a microcontroller (112), which controls on or off of the power transistor circuit to control the electromagnet component to perform the attraction, holding or releasing action. The controller further comprises: a voltage control loop, which provides a voltage feedback signal to the microcontroller so that the microcontroller generates a control signal according to the voltage feedback signal, wherein the control signal is a PWM control signal having different duty cycles during the attraction and holding of the electromagnet component so that the current does not exceed a predetermined current threshold during the attraction and holding of the electromagnet component; and a current control loop, which provides a current feedback signal to the microcontroller so that the microcontroller turns off the power transistor circuit upon detecting an overcurrent exceeding the current threshold.
H01H 47/02 - Circuits autres que ceux appropriés à une application particulière du relais et prévue pour obtenir une caractéristique de fonctionnement donnée ou pour assurer un courant d'excitation donné en vue de modifier le fonctionnement du relais
100.
LOW-VOLTAGE CIRCUIT BREAKER WITH RESIDUAL CURRENT TRIPPING DEVICE
A low-voltage circuit breaker with a residual current tripping device. A plurality of circuit breaker poles which are arranged side by side and a residual current tripping device are arranged in a molded insulated shell of the low-voltage circuit breaker, the circuit breaker poles are evenly arranged at the two sides of the residual current tripping device, the adjacent circuit breaker poles at each side share a composite operating mechanism to control the closing and opening of a movable contact and a fixed contact, each composite operating mechanism is provided with a handle, a tripping connecting rod pivotally mounted on a rotating plate and a tripping bar. The residual current tripping device comprises a residual current monitoring element, an electromagnetic relay, an auxiliary tripping mechanism with an auxiliary handle, a rotary connecting rod mechanically coupled with each composite operating mechanism, and a testing loop. A linkage element is in mechanical connection and linkage with the auxiliary handle of the auxiliary tripping mechanism of the residual current tripping device and the handle of each composite operating mechanism at the two sides. The conductive loop of the circuit breaker poles is effectively reduced, the rated current specification can be expanded to 40A, and the width dimension is decreased by nearly one third when compared with spliced products.
brevets
