A drawer type circuit breaker comprises a drawer base and a circuit breaker body, wherein the circuit breaker body is rocked into and out of the drawer base, so that a main circuit of the circuit breaker body and the drawer base is switched on and switched off; a safety baffle is provided between the drawer base and the circuit breaker body to block a drawer base busbar or a bridge type contact of the drawer base; and a front-rear displacement device for the safety baffle to move toward a movement direction of the drawer base is provided on the safety baffle and the drawer base. According to the drawer type circuit breaker of the present invention, the front-rear displacement device is provided on the safety baffle and the drawer base, the safety baffle is displaceable front and back, and the drawer base busbar may penetrate out of the safety baffle. The bridge contact can be mounted either on the drawer base or on the body, such that the mounting position of the bridge type contact is more flexible, and the connection of the main circuit is more stable and reliable.
The present invention relates to the field of low voltage apparatuses, and in particular to an arc-striking and arc-running structure. The arc-striking and arc-running structure comprises a stationary arc-running channel connected to a stationary contact, a movable arc-running channel matching with a movable contact, an upper plate and a lower plate. The upper plate and the lower plate are provided in parallel and the distance is d, the stationary arc-running channel is provided between the upper plate and the lower plate and is provided opposite the movable arc-running channel, and the stationary arc-running channel comprises a stationary arc-running channel arc portion protruding toward the movable arc-running channel and connecting to the stationary contact. Drawing a tangent at the maximum clearance of the movable contact from the end of the movable contact to the stationary arc-running channel arc portion, the tangent is tangential to the stationary arc-running channel arc portion at a tangent point b, the distance between the end of the movable contact and the tangent point b is r, a circle C0 is formed with a center being the tangent point b and having radius r, the circle C0 intersects with the movable arc-running channel at a point e, and the vertical distance between the point e and the lower plate is d1, d1≤d/4. The present invention achieves the quick jump of an arc, avoiding severe ablation of an arc extinguishing chamber by the arc.
The present invention discloses a data transmission apparatus of a circuit breaker controller. The data transmission apparatus comprises: a first component having a first power supply and a second component having a second power supply. The first component and the second component share a storage device. The second component is connected to a main circuit of the circuit breaker controller. The second component collects parameters of the main circuit and stores the parameters in the storage device. The second power supply powers the second component and is powered by the main circuit. The first component is connected to a communication device. The first component establishes data transmission between the communication device and the storage device. The first power supply powers the first component 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.
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
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
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
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
CA 03086613 2020-06-22 ABS TRACT A drawer type circuit breaker, the circuit breaker body is rocked into and out of the drawer base; a safety baffle is provided between the drawer base and the circuit breaker body to block a drawer base busbar or a bridge type contact of the drawer base; and a front- rear displacement device for the safety baffle to move toward a movement direction of the drawer base is provided on the safety baffle and the drawer base. According to the drawer type circuit breaker of the present invention, the front-rear displacement device is provided on the safety baffle and the drawer base, the safety baffle is displaceable front and back, and the drawer base busbar may penetrate out of the safety baffle. The mounting position of the bridge type contact is more flexible, and the connection of the main circuit is more stable and reliable. Date Recue/Date Received 2020-06-22
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.
A direct-acting electromagnetic trip device including a housing, and a regulation mechanism, a linkage mechanism, an electromagnetic system and a trip mechanism which are arranged in the housing. The regulation mechanism is connected with the linkage mechanism, the linkage mechanism is connected with one end of an iron core of the electromagnetic system, and the linkage mechanism is connected with the trip mechanism at the same time. The regulation mechanism includes a rotary knob and a regulation rod, wherein the rotary knob is abutted against and engaged with the regulation rod, and the regulation rod is abutted against and engaged with the linkage mechanism. The electromagnetic system further includes an elastic element that pushes the iron core to allow the linkage mechanism to be abutted against the regulation rod and allow the rotary knob to be abutted against the regulation rod.
H01H 75/00 - 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 réarmé par un moteur
H01H 71/74 - Moyens pour régler les conditions dans lesquelles le dispositif doit fonctionner pour assurer la protection
A fusion welding isolation mechanism for an operating mechanism of a circuit breaker is provided. The operating mechanism of circuit breaker includes: a tripping component, a left side, a right side plate, a latch, a half shaft, a lever, and a main shaft. The tripping component, the latch, and the lever are mounted between the left side plate and the right side plate. The half shaft and the main shaft penetrate through the left side plate and the right side plate, and extend out of the left side plate and the right side plate. The tripping component, the latch, the half shaft, the lever, and the main shaft move in linkage. The lever and the main shaft are provided with isolation devices for preventing an operation handle from an opening operation when a moving contact is subject to fusion welding.
H01H 71/64 - Mécanismes à réarmement manuel avec des moyens pour empêcher le réarmement pendant l'existence de conditions anormales, p.ex. dispositions à poignée libre comprenant un accouplement par genouillère
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
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
A tripping mechanism for a circuit breaker comprises a connecting rod assembly and a control assembly, wherein one end of the connecting rod assembly is connected with a rotating shaft assembly for driving the circuit breaker to be switched off in a driving manner, and the other end of the connecting rod assembly is provided with a jump pin which can be connected with the control assembly in a latching manner, and the jump pin is also provided with a U-shaped groove. The control assembly comprises a switching-off latch which is rotatably mounted. The end part of the switching-off latch can be connected with the U-shaped groove in a latching and limiting manner, and the circuit breaker triggers the end part of the switching-off latch to be tripped from the U-shaped groove when being switched off, and therefore the rotating shaft assembly connected with the connecting rod assembly drives the circuit breaker to be switched off. The tripping mechanism for the circuit breaker, which is provided by the present invention, is stable in latching, simple in structure and accurate in action.
A mounting structure for an energy storage assembly of a circuit breaker comprises an energy storage lever and an energy storage spring, wherein one end of the energy storage lever is an energy storage end which is connected with the energy storage spring, and the other end of the energy storage lever is a driving end. An external force can be applied to the driving end, such that the energy storage lever rotates around a lever fulcrum in the middle of the energy storage lever, thereby extruding the energy storage spring at the energy storage end to finish energy storage. One end of the energy storage spring is connected and mounted with the energy storage lever, and the other end of the energy storage spring is mounted in a base support. An energy storage mounting shaft which can be considered as a rotating fulcrum is also arranged in the middle of the energy storage lever. The driving end is stressed, such that the energy storage lever rotates around the energy storage mounting shaft. The mounting structure for the energy storage assembly of the circuit breaker, which is provided by the present invention, is simple in mounting process, stable in connection structure and high in assembly accuracy.
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
A fault state indication device for a circuit breaker includes: a contact group; and a transmission assembly and an indication assembly that are mounted inside a housing. The contact group implements a normally open contact group and a normally closed contact group. The transmission assembly acts on a contact support, different open and closed states of the contact group are realized via the contact support. The indication assembly indicates a fault state, the indication assembly is linked with the circuit breaker, and carries out a corresponding state indication in response to a fault.
An interlocking device for a circuit breaker comprises a control assembly and an interlocking assembly which are connected with each other in a driving manner. The control assembly can be connected with a connecting rod assembly and a cam assembly of an energy storage operation mechanism of the circuit breaker in a latching manner, thereby controlling the energy storage operation mechanism to finish a switching-on/switching-off operation. A switching-off latch of the control assembly is connected with the connecting rod assembly, and a switching-on latch of the control assembly is connected with the cam assembly. A switching-on guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-on latch actuates, and a switching-off guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-off latch actuates. One end of a switching-on half-shaft is connected with the switching-on latch in a driving manner, and the other end of the switching-on half-shaft and the driving guide rod face each other. The interlocking device for the circuit breaker, which is provided by the present invention, is compact in structure, accurate in control and stable in action.
H01H 9/24 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs pièces du mécanisme actionnant les contacts
H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
An energy storage operation mechanism for a circuit breaker comprises a side plate assembly, a connecting rod assembly, a cam assembly, an energy storage assembly, a rotating shaft assembly and a control assembly. A rotatable driving shaft is mounted in the side plate assembly. The connecting rod assembly and the cam assembly are mounted on the driving shaft. The energy storage assembly and the rotating shaft assembly are mounted at one side of the driving shaft, and the control assembly is mounted at the other side of the driving shaft. The connecting rod assembly is connected with the rotating shaft assembly. The cam assembly can be in contact and connection with the energy storage assembly to push the energy storage assembly to store energy. The control assembly can be connected with the connecting rod assembly and the cam assembly in a latching manner. The energy storage operation mechanism for the circuit breaker, which is provided by the present invention, is compact in structure and high in reliability.
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 71/52 - Mécanismes à réarmement manuel actionnés par un levier
H01H 3/46 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p.ex. une genouillère
An indication device of an electric switch comprises an indication component (101), a driving component (103) and a positioning component (102). The indication component (101) has at least three indication positions. Each indication position corresponds to one state of the electric switch, and the indication component (101) shows one indication mark at each indication position. The indication device of electric switch uses a single indication component (101) having at least three indication positions, and the third position is provided via deformation of the indication component (101) itself, thus realizing a simple structure and low manufacturing cost.
A two-level latch mechanism for an operation mechanism of a circuit breaker is provided. The operation mechanism includes: a tripping component, a left side plate, a right side plate, a latch, a half shaft, a lever, and a main shaft. The tripping component, the latch and the lever are mounted between the left side plate and the right side plate. The half shaft and the main shaft penetrate through the left side plate and the right side plate, and extend out of the left side plate and the right side plate. The tripping component, the latch, the half shaft, the lever, and the main shaft move in linkage. The tripping component includes a tripping buckle and a latch surface is disposed on a second end of the tripping buckle. The tripping component, the latch component and the half shaft component form a two-level latch.
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.
An operation mechanism of a circuit breaker includes: a tripping component; a left side plate; a right side plate; a latch; a half shaft; a lever; and a main shaft. The tripping component, the latch, the half shaft and the lever are mounted between the left side plate and the right side plate. The half shaft and the main shaft penetrate through the left side plate and the right side plate, and extend out of the left side plate and the right side plate. The lever includes a sheet metal bending piece. The sheet metal bending piece is bent to form a top wall and two side walls. The tripping component, the latch, the half shaft, the lever and the main shaft move in linkage. The tripping and the latch form a two-level latch. The operation mechanism of the circuit breaker is manual operation.
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.
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
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
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
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 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.
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.
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.
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.
A current transformer includes a closed magnetic circuit and a secondary winding. A first part of the closed magnetic circuit completely surrounds a primary conductor, and a second part of the closed magnetic circuit forms the secondary winding. The second part of the closed magnetic circuit serves as a magnetic core of the secondary winding. The closed magnetic circuit forms a plurality of branch magnetic circuits at the second part, and a secondary winding is formed on each branch magnetic circuit. Each branch magnetic circuit serves as a magnetic core of a corresponding secondary winding. Each secondary winding is staggered with each other in at least one of the length, the height and the thickness.
H01F 30/04 - Transformateurs fixes non couverts par le groupe avec plusieurs enroulements secondaires alimentant chacun une charge séparée, p.ex. pour alimentations de postes radio-électriques
34.
Controller and control method for alternating current contactor
A controller for an alternating current contactor includes: a filtering and rectification circuit that filters and rectifies external alternating current; an electromagnet component driven by an output of the filtering and rectification circuit that performs actions of attraction, holding or releasing; a power transistor circuit connected to the electromagnet component; and a microcontroller that controls the power transistor circuit to control the actions performed by the electromagnet component. The controller further includes a voltage control loop that provides a voltage feedback signal and a current control loop that provides a current feedback signal to the microcontroller. The microcontroller generates a control signal according to the voltage feedback signal. 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 bolding of the electromagnet component.
H01H 47/32 - Courant d'excitation fourni par un dispositif semi-conducteur
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
H01H 47/22 - 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 pour l'alimentation de la bobine du relais en courant d'excitation
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 7/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques
H02H 3/08 - 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 une surcharge
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.
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 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 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.
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.
The present invention discloses a manual operation device for low voltage switching apparatus. An operating handle is provided with a fixing groove. The fixing groove is matched with a second fixing plate, the second fixing plate is placed in the fixing groove. A reset torsion spring is arranged between the second fixing plate and the fixing groove. A pawl is rotatably mounted on the second fixing plate through a fixing pin, the pawl rotates about the fixing pin. One end of a first reset spring is connected to the top end of the pawl, the other end of the first reset spring is connected to the operating handle. The operating handle i mounted on a mounting shaft of an operating mechanism of the low voltage switching apparatus. A mounting plate is provided with a rotation shaft, the rotation shaft is the rotation shaft of an energy storage mechanism of the low voltage switching apparatus. The mounting shaft and the rotation shaft are not concentric. A ratchet wheel is rotatably mounted on the rotation shaft, the bottom end of the pawl is engaged with an intertooth position of the ratchet wheel. A stop detent is provided on the bottom of the mounting plate, the stop detent is rotatably mounted on the mounting plate. The top end of the stop detent is engaged with an intertooth position of the ratchet wheel. One end of a second reset spring is connected to the bottom end of the stop detent, the other end of the second reset spring is fixed on the mounting plate.
H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou
H01H 21/24 - Organes moteurs, p.ex. manette agencés pour retourner à la position normale après suppression de la force motrice
H01H 71/52 - Mécanismes à réarmement manuel actionnés par un levier
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 3/34 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant un encliquetage
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 transmission mechanism includes a link lever, a fan-shaped lever, a spring mechanism and a thrust shaft pin. An outer end of the link lever includes a pin hole and an inner end includes a chute. A cam shaft pin passes through the chute and moves in the chute to drive the link lever when a motor cam rotates. A roller is mounted between the pin hole and the chute. The fan-shaped lever is connected to a main shaft and includes a first chute. The top of the spring mechanism includes a hole. The thrust shaft pin passes through second chutes on two side plates, the first chute, the hole, and the pin hole and links the link lever, the fan-shaped lever and the spring mechanism. The thrust shaft pin compresses the spring mechanism to store energy and drives the fan-shaped lever to rotate and a contact to move.
H01H 3/26 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur dynamo-électrique
H01H 3/42 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant des cames ou excentriques
H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
A self-test module of an electronic circuit breaker includes a power supply assembly with a rechargeable battery, a self-test enablement assembly, an induced power supply assembly, a boost power supply, and a micro control unit (MCU). The self-test enablement assembly is connected to the rechargeable battery and includes an enablement button, a capacitor and a first power chip connected in series. The induced power supply assembly includes a buck chip. The boost power supply includes a second power chip and a boost chip connected in series. The MCU includes a plurality of pins that are connected to the first and second power chips, the buck chip, and the boost chip. The self-test module has two working modes; the electronic circuit breaker may be provided with or without a load current. The MCU operates the self-test procedure, indicates the self-test status, and maintains the indication for a period of time.
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
G01R 31/327 - Tests d'interrupteurs de circuit, d'interrupteurs ou de disjoncteurs
H02H 1/06 - Dispositions pour fournir la puissance d'actionnement
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
A changeable mechanism includes a contact support, a connecting rod, a connecting shaft, a cantilever, and a changeable component. The contact support has a moving contact therein, and rotates about a shaft. The connecting rod bottom end is connected to the contact support, the connecting rod top end is connected to a cantilever through a connecting shaft. The changeable component is connected to and drives the cantilever through a main shaft, and drives the contact support to rotate through the connecting shaft and connecting rod. Rotation of the contact support makes the moving contact and static contact separate or in contact to realize opening or closing a circuit breaker. The changeable mechanism may switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that height and volume of the MCB is reduced.
H01H 3/20 - Organes moteurs, c. à d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur dans lesquels un mouvement auxiliaire des pièces, ou d'un accessoire, est nécessaire avant que le mouvement principal ne devienne possible ou effectif, p.ex. pour un déverrouillage, un couplage
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
A contact module for a circuit breaker is disclosed, comprising: a base, a cover, an operation mechanism, at least three kinds of asymmetrical single-pole switches and a release mechanism. The cover is mounted on the base to form a space, where the mechanisms and the switches are disposed. The operation mechanism is connected to one switch; the release mechanism to the at least three switches. Each switch comprises a strong side and a weak side. For each switch, there is a thick contact housing on the strong side connected to a thick shaft, and a thin one on the weak side connected to a thin shaft. A rotor component has a single contact spring mounted on the weak side. Rotation shafts are connected by a linkage shaft to connect the single-pole switches; a strong side of one switch is connected to a weak side of another switch.
H01H 33/53 - Enveloppes; Réservoirs, cuves, tuyauterie ou robinetterie pour le fluide d'extinction d'arc; Accessoires pour ces dispositifs, p.ex. dispositifs de sécurité, dispositifs de décompression
H01H 33/60 - Interrupteurs dans lesquels les moyens de prévention ou d'extinction des arcs ne comportent pas de moyen séparé destiné à obtenir ou accroître l'écoulement du fluide extincteur d'arc
A rotating dual break point contact includes a rotor support, a first shaft, a second shaft, a third shaft, a first connection rod, a second connection rod, a contact bridge and a contact spring. The contact bridge is provided in the rotor support, and the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connection rod and the second connection rod. The contact bridge rotates between an initial pressure position and a maximum repulsion position. A single contact spring is mounted on one side of the contact bridge and is located in the rotor support.
An apparatus having a conductor passing through a magnetic yoke and is mounted on the bracket, in which the magnetic yoke is fixed on the bracket as well. Above the conductor, a shaft is mounted on the top of the bracket. A push rod is mounted on the shaft and rotates with the shaft about the bracket. An armature, spaced apart from the magnetic yoke, is fixed on the push rod. Adjusting mechanisms are mounted on both sides of the shaft between the push rod and the bracket. Within the adjusting mechanism, a torsion spring is around the shaft. An adjusting rod is provided with a plurality of adjusting surfaces which makes contact with the adjusting mechanism. A spring force of the torsion spring enables the push rod to rotate towards a direction which makes the armature and the magnetic yoke separate.
Disclosed is an adjustable thermal tripping device for a miniature circuit breaker, which is mounted inside a base (101) of the miniature circuit breaker, and which comprises: a tripping mechanism (106), a thermal deformation element (107) and an adjustment mechanism (102). The tripping mechanism has a protruding tripping link (161). The thermal deformation element is provided to be near the tripping link, and there is an interval between the thermal deformation element and the tripping link. The adjustment mechanism adjusts the distance of the interval between the tripping link and the thermal deformation element. A current in a loop where the miniature circuit breaker is connected heats and deforms the thermal deformation element, and thus the deformed thermal deformation element moves towards the tripping link to come into contact therewith and push same, such that the tripping mechanism is triggered to trip. The adjustment mechanism adjusts the distance between the thermal deformation element and the tripping link so as to adjust a setting current in the loop. The use of a rigid member to adjust the distance between the thermal deformation element and the tripping link in the tripping device can ensure the distance between the thermal deformation element and the tripping link is constant in each operation, and thus the tripping device is applicable to an electric motor.
A plug-in surge protector comprising: a base (114) and at least one plug-in module (105). The base comprises a press plate (107) and a micro switch (108). The plug-in module is mounted onto the base via a detent mechanism. The plug-in module comprises: a housing (118), a first contact piece (110), a second contact piece (112), a nonlinear protecting element (109), separation rods (106), and an indicator component (101). An indicator window (133) is provided on the top of the housing. A first pin (109b) of the nonlinear protecting element is connected directly to the first contact piece. A second pin (109a) of the nonlinear protecting element is connected to the second contact piece via a U-shaped frame (131) and a flexible connecting element (132). The U-shaped frame and the flexible connecting element are electrically-conductive materials, to which the second pin is connected by means of a low-melting point alloy. An upper separation rod is mounted within the U-shaped frame. The indicator component (101) is mounted on the top of the housing and is capable of moving horizontally. A lower separation rod (106a) is mounted on the bottom of the U-shaped frame and is provided with a downward protrusion. The press plate is arranged at the bottom the housing; the micro switch is arranged below the housing and aligned with the press plate.
A thermal tripping mechanism of a surge protection device comprises an elastic mechanism. Two first protection components (103) and one second protection component (108) form a Y-shaped layout and the two first protection components (103) are directly or indirectly connected to the second protection component (108) by using a thermal fusing material. The elastic mechanism comprises an elastic part (105) and a slide part (106). The elastic part (105) drives the slide part (106) to move by an elastic force. When the two first protection components (103) are both in a normal working state, the thermal fusing material does not reach a fusing temperature, the two first protection components (103) and the second protection component (108) form a conductive path, and the elastic part (105) is in an energy storage state. When at least one of the first protection components (103) is in an abnormal working state, the thermal fusing material reaches the fusing temperature and is fused, the elastic part (105) releases energy for driving the slide part (106) to move, and the slide part (106) moves to cut off the conductive path.
H01H 71/20 - Mécanismes électrothermiques avec masse fusible
H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation
H01H 83/10 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par une tension excessive, p.ex. pour la protection contre la foudre
65.
ELECTRONIC TRIP UNIT PROTECTION DEVICE AND PROTECTION METHOD
Disclosed are an electronic trip unit protection device and protection method. The protection device is connected to an energy-storage capacitor (206) in the electronic trip unit; the energy-storage capacitor is charged to a sufficient voltage if the primary loop current is a small current, the small current being 0.4-0.8 times the primary loop rated current, and the sufficient voltage being 12V-15V. The method of charging the energy-storage capacitor comprises charging by limiting the current and directly stepping up voltage using a resistance, or stepping up voltage using a charging battery and PWM. In the electronic trip unit protection device and protection method, the energy-storage capacitor is charged with excess electricity excluding the electricity necessary for normal operation of an MCU unit (205), such that the energy-storage capacitor can be charged to a sufficient voltage even if the primary loop current is a small current, so as to ensure that a magnetic flux convertor (207) can generate adequate electromagnetic force to trigger the operation of the trip mechanism.
H02H 3/02 - 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
H01H 71/43 - Mécanismes de déclenchement électrodynamiques
A current transformer comprises a closed magnetic circuit, which has a first part and a second part. The first part completely surrounds a primary conductor. The second part comprises branch magnetic circuits. A secondary winding is formed on each branch magnetic circuit. Each branch magnetic circuit serves as a magnetic core of the corresponding secondary winding. The secondary windings are staggered in at least one of a length direction, a thickness direction, and a height direction. The secondary windings are connected with each other in series or in parallel by respective leads. Each branch magnetic circuit is formed by splitting of laminated or wound soft magnetic metal sheets.
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 comprises a filtering and rectification circuit; an electromagnet component driven by an output of the filtering and rectification circuit and performing actions of attraction, holding or releasing; a power transistor circuit connected to the electromagnet component; and a microcontroller, which controls on or off of the power transistor circuit to control the electromagnet component. The controller comprises a voltage control loop, which provides a voltage feedback signal to the microcontroller; and a current control loop, which provides a current feedback signal to the microcontroller. The microcontroller generates a PWM control signal according to the voltage feedback signal. The PWM control signal has different duty cycles during the attraction and holding of the electromagnet component so that the current does not exceed a predetermined current threshold. 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
69.
CONTROLLER AND CONTROL METHOD FOR ALTERNATING CURRENT CONTACTOR
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
A direct-current residual-current detecting device, driven by a monopolar power supply, comprises: a power conversion self-balancing circuit (102), a residual-current transformer (106), and a comparator (108). An input end of the power conversion self-balancing circuit (102) is connected to the monopolar power supply, the power conversion self-balancing circuit (102) converts monopolar power into bipolar power and outputs the bipolar power, and the power conversion self-balancing circuit (102) supplies power to another component. The residual-current transformer (106) is provided with an RL multivibrator, a square wave pulse voltage drive circuit (104) circularly exerts positive and negative direction voltages to a secondary winding of the residual-current transformer (106), and the residual-current transformer (106) outputs a corresponding sampling voltage. The comparator (108) obtains the sampling voltage output by the residual-current transformer (106), compares the sampling voltage with a voltage threshold of the comparator, and generates a positive and negative alternately square wave signal, the square signal is fed back as output of the comparator (108) to the square wave pulse voltage drive circuit (104) as a drive signal, and output of the comparator (108) is further used as output of the direct-current residual-current detecting device to represent the polarity and size of a direct-current residual-current.
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
A residual current protection device, comprising: a first detection magnetic core (107) and a second detection magnetic core (108) which are borne around a conducting wire of a main loop; a first fault current detection circuit (102) coupled with the first detection magnetic core (107), wherein the first fault current detection circuit (102) is dependent on a grid voltage and conducts full current sampling on the main loop, so as to detect a high-frequency alternating current fault residual current, a pulse direct current residual current and a smooth direct current residual current; a second fault current detection circuit (103) coupled with the second detection magnetic core (108), wherein the second fault current detection circuit (103) conducts electromagnetic current sampling on the main loop independent of the grid voltage, so as to detect a power-frequency alternating current residual current and a pulse direct current residual current; a drive circuit (104), wherein the input thereof is connected to the first fault current detection circuit (102) and the second fault current detection circuit (103), and the output thereof is connected to an executing mechanism (106) to trigger the executing mechanism (106) to act; and a bipolar power source module (105) connected to the main loop and the first fault current detection circuit (102).
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
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
72.
MOTOR CAM OPERATING MECHANISM AND TRANSMISSION MECHANISM THEREOF
A transmission mechanism of a motor cam operating mechanism is in coordination with a cam (106) driven by a motor and is arranged on a side of the cam. The transmission mechanism comprises: a link lever (103), a sector lever (105), a spring mechanism (112), and a thrust shaft pin (111). An outer end of the link lever (103) is provided with a pin hole (132); an inner end of the link lever (103) has a chute (151); the cam shaft pin (113) penetrates the chute (151) and is fastened on the cam (106); when the cam (106) rotates, the cam shaft pin (113) moves in the chute (151); the cam (106) drives, through the cam shaft pin (113), the link lever (103) to move; a roller (104) is installed between the pin hole (132) and the chute (151). The sector lever (105) is connected to a spindle (107), and the sector lever (105) is provided with a first chute (151). The top of the spring mechanism (112) is provided with a hole. The thrust shaft pin (111) penetrates second chutes (501) on two side plates (115), the first chute (151) on the sector lever (105), the hole on the top of the spring mechanism (112), and the pin hole (132) on the outer end of the link lever (103); the thrust shaft pin (111) makes linkage of the link lever (103), the sector lever (105) and the spring mechanism (112). The thrust shaft pin (111) compresses the spring mechanism (112) to store energy, and in an energy releasing phase of the spring mechanism (112), the thrust shaft pin (111) drives the sector lever (105) to rotate, and drives, through the spindle, a contact to move. The transmission mechanism has a simple structure and is reliable in transmission.
The present invention discloses a protection module for a control and protective switching device, comprising a control power supply processing unit, an auxiliary power supply processing unit, a power supply converting unit, a signal processing and controlling unit, a trip electromagnet driving unit, a control electromagnet driving unit, and a man-machine interaction device. The control power supply processing unit and the auxiliary power supply processing unit receive a power supply signal from a high voltage power supply, and process the signal for supplying power for other components. The signal processing and controlling unit receives a mutual-induction signal from a current mutual inductor, outputs a first control signal and a second control signal to the trip electromagnet driving unit and the control electromagnet driving unit, and receives a first feedback signal and a second feedback signal from an operation mechanism and a control electromagnet. The trip electromagnet driving unit outputs a first operation signal to a trip electromagnet, and the trip electromagnet outputs a mechanical signal to the operation mechanism. The control electromagnet driving unit outputs a second operation signal to the control electromagnet. The man-machine interaction device performs signal interaction with the signal processing and controlling unit.
H01H 47/32 - Courant d'excitation fourni par un dispositif semi-conducteur
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation
H02H 1/06 - Dispositions pour fournir la puissance d'actionnement
A self-test module of an electronic circuit breaker, comprising a power source assembly (101), a self-test starting assembly (104), an induced power supply assembly (103), a boost power supply assembly (105), and a micro control unit (102), wherein the power source assembly (101) comprises a charging battery (BT); the self-test starting assembly (104) comprises a starting button (T), a capacitor (C) and a first power source chip (U1) which are connected in series, and the self-test starting assembly (104) is connected to the charging battery (BT); the induced power supply assembly (103) comprises a buck chip (U2); the boost power supply assembly (105) comprises a second power source chip (U3) and a boost chip (U4) which are connected in series; and the micro control unit (102) is provided with a plurality of pins, the plurality of pins are respectively connected to the first power source chip (U1), the second power source chip (U3), the buck chip (U2) and the boost chip (U4), and the micro control unit (102) operates a self-test program, indicates a self-test state and keeps same for a period of time. The self-test module of an electronic circuit breaker has two operating modes, i.e. a load-free current mode of the electronic circuit breaker and an ON load current mode of the electronic circuit breaker respectively.
The present invention discloses a changeable mechanism, the changeable mechanism comprises a support contact, a connecting rod, a connecting shaft, a cantilever and a changeable component. The support contact is provided with a moving contact therein, the support contact rotates about a shaft to make the moving contact be separated from or in contact with a static contact. The bottom end of the connecting rod is connected to the contact support, the top end of the connecting rod is connected to a cantilever through a connecting shaft. The changeable component is connected to the cantilever through a main shaft, the changeable component acts and drives the cantilever to act through the main shaft, and further drives the contact support to rotate through the connecting shaft and the connecting rod. The rotation of the contact support makes the moving contact and the static contact to be separated from or in contact with each other so as to realize opening or closing of a circuit breaker. The changeable component is a manual operation mechanism or an energy storage mechanism. The changeable operation mechanism of the present invention may realize a convenient switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that the height and volume of the MCB is reduced.
A contact module for a breaker comprises a substrate (101), an upper cover (102), an operation mechanism (103), three single-pole switches, and a tripping mechanism (104). The upper cover covers the substrate, and the upper cover and the substrate together form an accommodation space; the operation mechanism, the three single-pole switches, and the tripping mechanism are disposed inside the accommodation space. The operation mechanism is connected to one of the single-pole switches, and the tripping mechanism is connected to the three single-pole switches. The three single-pole switches are asymmetrical and each comprise a strong side and a weak side. A contact housing at the strong side of each single-pole switch is thick and is connected to a thick rotating shaft, and a contact housing at the weak side of each single-pole switch is thin and is connected to a thin rotating shaft. A rotor part of each single-pole switch only has a single-contact spring, and the single-contact spring is mounted at the weak side. The adjacent single-pole switches are connected to the rotating shaft by a linkage shaft and driven in a linked manner, and a strong side of one single-pole switch is adjacent to a weak side of the other single-pole switch.
An adjustable electromagnetic release. A magnetic yoke (102) is fixed on a bracket (109); a conductor (104) passes through the bracket and the yoke and is mounted on the bracket; a shaft (107) is mounted on the top of the bracket and is positioned above the conductor; a push rod (103) is mounted on the shaft and rotates with the shaft responsive to the bracket; an armature (101) is fixed on the push rod; the armature and the yoke are spaced apart; two adjusting mechanisms are mounted on the shaft and mounted on both sides of the push rod between the push rod and the bracket; a torsion spring (120) surrounds the shaft and is positioned in the adjusting mechanism; the adjusting mechanism contacts with the push rod; an adjusting rod (110) is provided with a plurality of adjusting surfaces (115) which contact with the adjusting mechanism and can move in the longitudinal direction. The spring force of the torsion spring enable the push rod rotates towards the direction of the armature and the yoke apart. When large current passes through the conductor, the armature and the yoke attract each other under the electromagnetic force; When the electromagnetic force is greater than the spring force, the push rod rotates towards the direction of the armature and the yoke attracted; the push rod strikes the release mechanism to release and cut off the circuit; the electromagnetic force disappears; and the push rod resets under the spring force of the torsion spring.
An adjustable electromagnetic release. A magnetic yoke (102) is fixed on a bracket (109); a conductor (104) passes through the bracket and the yoke and is mounted on the bracket; a shaft (107) is mounted on the top of the bracket and is positioned above the conductor; a push rod (103) is mounted on the shaft and rotates with the shaft responsive to the bracket; an armature (101) is fixed on the push rod; the armature and the yoke are spaced apart; two adjusting mechanisms are mounted on the shaft and mounted on both sides of the push rod between the push rod and the bracket; a torsion spring (120) surrounds the shaft and is positioned in the adjusting mechanism; the adjusting mechanism contacts with the push rod; an adjusting rod (110) is provided with a plurality of adjusting surfaces (115) which contact with the adjusting mechanism and can move in the longitudinal direction. The spring force of the torsion spring enable the push rod rotates towards the direction of the armature and the yoke apart. When large current passes through the conductor, the armature and the yoke attract each other under the electromagnetic force; When the electromagnetic force is greater than the spring force, the push rod rotates towards the direction of the armature and the yoke attracted; the push rod strikes the release mechanism to release and cut off the circuit; the electromagnetic force disappears; and the push rod resets under the spring force of the torsion spring.
The present invention discloses a contact structure of a low-voltage electrical apparatus. The contact structure is in a dual-breakpoint form, and comprises: two U-shaped static contacts, the U-shaped static contact enabling the current direction in the static contact to be opposite to the current direction in a movable contact; a contact bridge; two movable contacts, disposed on the contact bridge, and respectively corresponding to the two static contacts; a contact support member, disposed on the movable contacts and connected to the movable contacts; two main contact springs, symmetrically disposed under the movable contacts and forming an angle with the contact bridge; and a spring support member, disposed under the two movable contacts and connected to the two main contact springs. At a contact position of the static contact and the movable contact and at a repulsed open position of the static contact and the movable contact, the angle between the main contact spring and the contact bridge is between −β and +α.
A contact module for a breaker comprises a substrate (101), an upper cover (102), an operation mechanism (103), three single-pole switches, and a tripping mechanism (104). The upper cover covers the substrate, and the upper cover and the substrate together form an accommodation space; the operation mechanism, the three single-pole switches, and the tripping mechanism are disposed inside the accommodation space. The operation mechanism is connected to one of the single-pole switches, and the tripping mechanism is connected to the three single-pole switches. The three single-pole switches are asymmetrical and each comprise a strong side and a weak side. A contact housing at the strong side of each single-pole switch is thick and is connected to a thick rotating shaft, and a contact housing at the weak side of each single-pole switch is thin and is connected to a thin rotating shaft. A rotor part of each single-pole switch only has a single-contact spring, and the single-contact spring is mounted at the weak side. The adjacent single-pole switches are connected to the rotating shaft by a linkage shaft and driven in a linked manner, and a strong side of one single-pole switch is adjacent to a weak side of the other single-pole switch.
Disclosed is a rotating dual break point contact, comprising: a rotor support (102), a first shaft (103), a second shaft (104), a third shaft (105), a first connecting rod (106), a second connecting rod (107), a contact bridge (108) and a contact spring (109). The contact bridge is provided in the rotor support, the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connecting rod, and the second connecting rod, and the contact bridge rotates between an initial pressure position and a maximum expanded position. The number of contact springs is one, which is mounted at one side of the contact bridge, and is located in the rotor support. The rotating dual break point contact has a simple structure, high reliability, and uses the provision of an included angle of a waist-shaped hole and a contact point to keep the pressure of contacts at two sides of a contact bridge balanced, and using a single spring structure makes the structure of the rotating dual break point contact more compact and the volume smaller.
An exchange operating mechanism comprises a contactor carrier (102), a connecting rod (105), a connecting shaft (106), a cantilever (114), and an exchange mechanism. A moveable contactor (121) is fixed in the contactor carrier (102). The contactor carrier (102) is rotated around a shaft (122) to make the moveable contactor (121) be separated from or contacted to a fixed contactor (104). The bottom end of the connecting rod (105) is connected to the contactor carrier (102). The top end of the connecting rod (105) is connected to the cantilever (114) via the connecting shaft (106). The exchange mechanism is connected to the cantilever (114) via a main shaft (103). The action of the exchange mechanism drives the cantilever (114) by the main shaft (103) and drives the contactor carrier (102) by the connecting shaft (106) and the connecting rod (105) to make the moveable contactor (121) be separated from or contacted to the fixed contactor (104), thereby opening or closing a switch. The exchange mechanism is one of a manual operating mechanism (101) and an energy storing mechanism (112). The exchange mechanism provides an easy way to implement the exchange between a manual operating mechanism and a motor operating mechanism of a molded circuit breaker. The motor operating mechanism of the exchange mechanism is no longer installed outside the molded circuit breaker, and the height and volume of the molded circuit breaker are reduced.
A manually operated device of a low-voltage power switch, comprising: an operation handle (1) is provided with a fixed groove (101) thereon; the fixed groove (101) matches a second fixed plate (6) disposed therein; a reset torsion spring (2) is disposed between the second fixed plate (6) and the fixed groove (101); a pawl (5) is rotatably installed on the second fixed plate (6) via a fixed pin (4), and rotates around the fixed pin (4); one end of a first reset spring (3) is connected to the top of the pawl (5), and the other end of the first reset spring (3) is connected to the operation handle (1) installed on a mounting shaft of the operation mechanism; a mounting plate (8) is installed with a rotating shaft (11), the rotating shaft (11) being a rotating shaft of an energy storage mechanism; the mounting shaft and the rotating shaft (11) are different; a ratchet wheel (7) is rotatably installed on the rotating shaft (11); the bottom of the pawl (5) clamps between the teeth of the ratchet wheel (7); the bottom portion of the mounting plate (8) is installed with a detent (9) rotatably installed on the mounting plate (8); the top of the detent(9) clamps between the teeth of the ratchet wheel (7); one end of a second reset spring (10) is connected to the bottom of the detent (9), and the other end of the second reset spring (10) is fixed to the mounting plate (8).
A manually operated device of a low-voltage power switch, comprising: an operation handle (1) is provided with a fixed groove (101) thereon; the fixed groove (101) matches a second fixed plate (6) disposed therein; a reset torsion spring (2) is disposed between the second fixed plate (6) and the fixed groove (101); a pawl (5) is rotatably installed on the second fixed plate (6) via a fixed pin (4), and rotates around the fixed pin (4); one end of a first reset spring (3) is connected to the top of the pawl (5), and the other end of the first reset spring (3) is connected to the operation handle (1) installed on a mounting shaft of the operation mechanism; a mounting plate (8) is installed with a rotating shaft (11), the rotating shaft (11) being a rotating shaft of an energy storage mechanism; the mounting shaft and the rotating shaft (11) are different; a ratchet wheel (7) is rotatably installed on the rotating shaft (11); the bottom of the pawl (5) clamps between the teeth of the ratchet wheel (7); the bottom portion of the mounting plate (8) is installed with a detent (9) rotatably installed on the mounting plate (8); the top of the detent(9) clamps between the teeth of the ratchet wheel (7); one end of a second reset spring (10) is connected to the bottom of the detent (9), and the other end of the second reset spring (10) is fixed to the mounting plate (8).
Disclosed is a control and protection device for a low-voltage electrical apparatus, comprising a pedestal and a control and protection module. The control and protection module may be plugged into the pedestal and is replaceable. The pedestal comprises a base and a housing, and is further provided with a moving contact, a static contact, and a current conductor connected to a main circuit current; a control electromagnet operation mechanism for controlling close and open of the moving contact and the static contact according to a control signal, and maintaining a close or open status of the moving contact and the static contact; a manual operation knob providing a control signal for controlling the close and open of the moving contact and the static contact; a control contact connected to the manual operation knob; and a current sensor for detecting a current that flows through the main circuit current conductor and generating a sensing signal. The control and protection device further comprises: a signal processing unit for controlling a state of the control electromagnet according to the sensing signal via an electrical circuit; and a tripping device for controlling actions of the operation mechanism with a mechanical connection in response to the signal processing unit. The current sensor has a secondary circuit connection detection device.
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
H02H 3/08 - 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 une surcharge
H01H 71/12 - Mécanismes de déclenchement automatique avec ou sans déclenchement manuel
H01H 73/42 - 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 bouton rotatif ou volant
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
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
H01H 89/08 - Combinaison d'un circuit à réarmement manuel avec un contacteur, c. à d. le même circuit étant commandé à la fois par un dispositif de télécommande et un dispositif de protection les deux dispositifs utilisant la même paire de contacts
H01H 89/06 - Combinaison d'un circuit à réarmement manuel avec un contacteur, c. à d. le même circuit étant commandé à la fois par un dispositif de télécommande et un dispositif de protection
H02H 3/16 - 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 courant de défaut à la terre ou à la masse
H01R 13/713 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé l'interrupteur étant un interrupteur de sécurité
A fast closing mechanism includes a rotation shaft and an ejector pin. The ejector pin is rotatably assembled to the side plate by the rotation shaft. The ejector pin strides over the side plate. The ejector pin includes a first portion and a second portion. The first portion is connected to a handle via a rod, and the second portion is located above a press plate. The fast closing mechanism may have an additional ejector pin based on current structures, the press plate may press against a moving contact at an initial stage of a closing process, so that the moving contact will not move during the initial stage of the closing process. The mechanical energy generated during the closing process is stored in an energy storage spring. At a later stage of the closing process, the ejector pin releases the press plate to accomplish closing quickly.
A surge protection device (100) having a short-circuit protection function, comprising a surge protection module (102) and a short-circuit current protection module (101). The surge protection module discharges and suppresses a surge current and voltage, and the surge protection module is a plug-in type module. The short-circuit current protection module is integrated in a pedestal, and the short-circuit current protection module provides short-circuit protection and plug-in mounting for the surge protection module. The surge protection device overcomes the impulse current problem brought about by using an external overcurrent protection device as backup protection, while having a strong current limiting capacity, good short-circuit breaking capacity, and small minimal instantaneous tripping current value, can withstand a failure mode occurring in a temporary overvoltage (TOV), and can also play the role of protection in the case of a low current.
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
Disclosed is a transfer switch appliance, installed between a primary side power source and a backup side power source, comprising: a front base, a rear base, a contact system, and an operating system. The front base and the rear base define a space. The contact system is installed within the space. The contact system is in contact with a break circuit. The contact system comprises a dynamic contact and a static contact. The dynamic contact comprises three working positions, namely a primary side, an intermediate position, and a backup side. The operating system is installed on the front base. The operating system is an energy storage mechanism implementing breaking/engaging operations. An operating mechanism is connected to the dynamic contact via a connecting rod. The operating system comprises a primary side operating mechanism and a backup side operating mechanism connected by a gear set. The primary side operating mechanism and the backup side operating mechanism respectively are installed on the upper and lower sides of the front base. The primary side operating mechanism and the backup side operating mechanism are connected to a lever or a motor via a common shaft. The lever or the motor completes an energy storage operation with respect to both the primary side operating mechanism and the backup side operating mechanism within one revolution.
H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou
H01H 9/24 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs pièces du mécanisme actionnant les contacts
Disclosed is an interlocking apparatus of a transfer switch. The transfer switch comprises a primary side operating mechanism and a backup side operating mechanism. The interlocking apparatus comprises a primary side active connecting rod, a primary side passive connecting rod, a primary side executing connecting rod, a backup side active connecting rod, a backup side passive connecting rod, and a backup side executing connecting rod. The primary side active connecting rod moves along with a main shaft of the primary side operating mechanism. The primary side passive connecting rod is connected to the primary side active connecting rod. The primary side executing connecting rod is connected to the primary side passive connecting rod and is installed onto a side panel of the backup side operating mechanism. The primary side executing connecting rod rotates around a second fulcrum on the side panel of the backup side operating mechanism. The backup side active connecting rod moves along with a main shaft of the backup side operating mechanism. The backup side passive connecting rod is connected to the backup side active connecting rod. The backup side executing connecting rod is connected to the backup side passive connecting rod and is installed onto a side panel of the primary side operating mechanism. The backup side executing connecting rod rotates around a first fulcrum on the side panel of the primary side operating mechanism.
The present invention discloses a protection module for a control and protective switching device, comprising a control power supply processing unit, an auxiliary power supply processing unit, a power supply converting unit, a signal processing and controlling unit, a trip electromagnet driving unit, a control electromagnet driving unit, and a man-machine interaction device . The control power supply processing unit and the auxiliary power supply processing unit receive a power supply signal from a high voltage power supply, and process the signal for supplying power for other components. The signal processing and controlling unit receives a mutual-induction signal from a current mutual inductor , outputs a first control signal and a second control signal to the trip electromagnet driving unit and the control electromagnet driving unit, and receives a first feedback signal and a second feedback signal from an operation mechanism and a control electromagnet. The trip electromagnet driving unit outputs a first operation signal to a trip electromagnet, and the trip electromagnet outputs a mechanical signal to the operation mechanism. The control electromagnet driving unit outputs a second operation signal to the control electromagnet. The man-machine interaction device performs signal interaction with the signal processing and controlling unit.
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation
91.
PROTECTION MODULE FOR CONTROL AND PROTECTIVE SWITCHING DEVICE
A protection module (100) for a control and protective switching device comprises a control power supply processing unit (112), an auxiliary power supply processing unit (113), a power supply converting unit (114), a signal processing and controlling unit (111), a trip electromagnet driving unit (116), a control electromagnet driving unit (115), and a man-machine interaction device (118). The control power supply processing unit (112) and the auxiliary power supply processing unit (113) receive a power supply signal from a high voltage power supply (110), and process the signal for supplying power for other components. The signal processing and controlling unit (111) receives a mutual-induction signal from a current mutual inductor (102), outputs a first control signal (611) and a second control signal (511) to the trip electromagnet driving unit (116) and the control electromagnet driving unit (115), and receives a first feedback signal (311) and a second feedback signal (411) from an operation mechanism (103) and a control electromagnet (104). The trip electromagnet driving unit (116) outputs a first operation signal (167) to a trip electromagnet (117), and the trip electromagnet (117) outputs a mechanical signal (173) to the operation mechanism (103). The control electromagnet driving unit (115) outputs a second operation signal (164) to the control electromagnet (104). The man-machine interaction device (118) performs signal interaction with the signal processing and controlling unit (111). The protection module (100) for a control and protective switching device has characteristics of having flexible external connection manner, having high reliability and having desirable interchangeability.
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation
92.
CONTACT STRUCTURE OF LOW-VOLTAGE ELECTRICAL APPARATUS
Disclosed is a contact structure of a low-voltage electrical apparatus. The contact structure is in a double-breakpoint form, and comprises: two U-shaped fixed contacts, the U-shaped fixed contact enabling the current direction in the fixed contact to be opposite to the current direction in a movable contact; a contact bridge; two movable contacts, disposed on the contact bridge, and respectively corresponding to the two fixed contacts; a contact support member, disposed on the movable contacts and connected to the movable contacts; two main contact springs, symmetrically disposed under the movable contacts and forming an angle with the contact bridge; and a spring support member, disposed under the two movable contacts and connected to the two main contact springs. In a contact position and a repulsion position of the fixed contact and the movable contact, the angle between the main contact spring and the contact bridge is between -β and +α.
Disclosed is a control and protection device for a low-voltage electrical appliance, comprising a base and a control and protection module. The control and protection module can be plugged at the base and is replaceable. The base comprises a substrate and a housing; and further provided with a moving contact, a fixed contact, and a current conductor for a main circuit current; a control electromagnet operation mechanism, for controlling combination and separation of the moving contact and the fixed contact according to a control signal, and maintaining a combination state or separation state of the moving contact and the fixed contact; a manual operation knob, providing a control signal for controlling the combination and separation of the moving contact and the fixed contact; a control contact, connected to the manual operation knob; and a current sensor, for detecting a current that flows through the main circuit current conductor and generating a sensing signal. The control and protection device comprises: a signal processing unit, for controlling a state of the control electromagnet according to the sensing signal via an electrical circuit; and a tripping device, for controlling actions of the operation mechanism with a mechanical connection in response to the signal processing unit. The current sensor has a secondary circuit connection detection device.
H02H 3/08 - 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 une surcharge
H01H 73/00 - 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
94.
OPERATING SYSTEM FOR AUTOMATIC TURN-OVER SWITCH AND GEAR SET
Disclosed is an operating system for an automatic turn-over switch, comprising a gear set, an operating mechanism on the active side, an operating mechanism on the backup side, an operating handle, a electromotor, and a side plate. The gear set is used for the energy-storing operation for the operating mechanism on the active side and the operating mechanism on the backup side independent of each other, the operating mechanism on the active side being connected to a power supply on the active side, and the operating mechanism on the backup side being connected to a power supply on the backup side, wherein the gear set comprises: a driving wheel on the active side connected to a driving shaft of the operating mechanism on the active side and mounted with a clutch on the active side; a driving wheel on the backup side connected to a driving shaft of the operating mechanism on the backup side and mounted with a clutch on the backup side; transmission wheels on the active side and transmission wheels on the backup side connected both to a common shaft, the transmission wheels on the active side being engaged with the driving wheel on the active side and the transmission wheels on the backup side being engaged with the driving wheel on the backup side; and a reverse wheel engaged with the driving wheel on the active side.
H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou
H01H 3/42 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant des cames ou excentriques
Disclosed is a fast switching-on mechanism (200) mounted on a side plate (108) of a circuit breaker. The fast switching-on mechanism comprises a rotary shaft (202) and an ejector pin (204). The ejector pin is installed on the side plate by means of the rotation of the rotary shaft, the ejector pin spanning the side plate. The ejector pin comprises a first portion (240) and a second portion (242). The first portion is connected to a handle (304) via a rod (300) and the second portion is located above a pressure plate (102). The fast switching-on structure has an additional ejector pin compared with current structures, meaning that in the preliminary stage of switching on, the pressure plate can press down a movable contact, thus the position of the movable contact in the preliminary stage of switching on does not change. In addition, in the process of switching on, the mechanical energy generated is stored in an energy storage spring. In the latter stage of switching on, the ejector pin releases the pressure plate, the pressure plate and the movable contact use the spring force of the energy storage spring to obtain a greater initial speed, accomplishing rapid switching on, and reducing the length of time for the action of switching on to 2-3 ms.
A rotation double-breakpoint movable contact module comprises a rod-shaped block rotor（101）、a first connection rod(102)、a second connection rod(103)and a contact bridge(104). The rod-shaped block rotor（101）is single-phase independent. At the centre of the rod-shaped block rotor（101）is provided a first through-hole (110),in which is installed a first axle(105). A first recess(111)is formed on each axial side surface of the rod-shaped block rotor（101）.In the first recesses(111) are installed contact springs(108),which can move in the range defined by the first recess(111). The first connection rod(102)is mounted onto the rod-shaped block rotor（101）.The second axle (106) penetrates through the first connection rod (102).The second axle (106) and the third axle (107) respectively penetrate through the second rod (103). The contact bridge(104) is designed to penetrate through the rod-shaped block rotor（101）. The out profile of the contact bridge (104) is centrally symmetrical. The first axle (105) and the third axle (107) respectively penetrate through the contact bridge(104) and onto the two sides end point are soldered contacts. The rotation double-breakpoint movable contact module can attract and break the movable contact when a large current short-circuit is occurred, quickly open and doesn't spring back, and keep the pressure balance between two contact point.
H01H 71/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des interrupteurs ou relais de protection compris dans les groupes
A linkage structure of a moving contact of a modular circuit breaker, comprising: a first housing (101) and a second housing (102), the first housing (101) and the second housing (102) respectively having a first mounting hole (110) and a second mounting hole (120), the position of the first mounting hole (110) and the second mounting hole (120) being corresponded; a first short axis (103); an operating mechanism side plate (104); the operating mechanism side plate (104) having a third through hole (140), the third through hole (140) located in the position which is corresponded to the rotational center of the position of the contact rotor (106); an operating mechanism lower link rod (105), the operating mechanism lower link rod (105) having a fourth through hole, the fourth through hole docking with the first minor axis (103); a contact rotor (106), the contact rotor (106) rotating around the rotational center, both sides of the contact rotor (106 ) having matching surfaces; a first linkage block (107), connected to the matching surface of the first side of the contact rotor (106); a second linkage block (108), connected to the matching surface of the second side of the contact rotor (106); the contact rotor (106), the first linkage block (107) and the second linkage block (108) mounted in the first mounting hole (110) and the second mounting hole (120).
A surge protection equipment comprises a surge protection module and a base (104). The surge protection module is inserted onto the base. A fault protection disconnecting equipment (105) is arranged in the surge protection module. The surge protection module comprises a switch protection module (102) and a voltage-limiting protection module (103). A remote alarm equipment (106) is arranged on the base. The fault protection disconnecting equipment is linked with the remote alarm equipment. Installation measures of the surge protection equipment are simple. The surge protection equipment realizes that a single component has multiple uses and is beneficial to reduce the number of components and reduce costs. The fault protection disconnecting equipment has a rotating contact structure as the connection mode of a movement conductor and a static conductor to realize the fault protection disconnection work. The remote alarm equipment arranged on the base realizes to simultaneously monitor the work status of multiple modules by flexible operating tapes.
H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
H01H 37/76 - Interrupteurs dans lesquels uniquement le mouvement d'ouverture ou uniquement le mouvement de fermeture d'un contact est effectué par chauffage ou refroidissement Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
An element (109) for producing a triggered arc is installed between two electrodes (103,104) to form a trigger circuit. Both end surfaces (110,111) of the element (109) respectively make electrical contact with both of the electrodes (103,104), and the element (109) is made of conductive material. The element (109) comprises a conductor (101) and an insulator (102). The conductor (101) makes electrical contact with both of the electrodes (103,104). A designated area of the conductor (101) forms an arc striking area (105), and both of the electrodes (103,104) compose an arc striking space (112) together with the arc striking area (105). The triggered arc is produced in the arc striking space (112) when an overvoltage is applied. The areas on the conductor (101) except the part making contact with the electrodes (103,104) and the designated arc striking area (105) are filled and packaged by the insulator (102).
H01T 1/20 - Moyens pour amorcer l'arc ou pour faciliter l'allumage de l'éclateur
H01T 1/15 - ÉLECTRICITÉ ÉLÉMENTS ÉLECTRIQUES ÉCLATEURS; LIMITEURS DE SURTENSION UTILISANT DES ÉCLATEURS; BOUGIES D'ALLUMAGE; DISPOSITIFS À EFFET CORONA; PRODUCTION D'IONS À INTRODUIRE DANS DES GAZ À L'ÉTAT LIBRE - Détails des éclateurs pour la protection contre la pression excessive
H01T 4/10 - Limiteurs de surtension utilisant des éclateurs ayant un intervalle simple ou plusieurs intervalles disposés en parallèle
Disclosed is a overvoltage protection device, comprising: an inner housing and an outer housing mutually nested to form an containing space, an electrode group disposed in the containing space, the electrode group comprising an upper electrode, a lower electrode, a trigger electrode and a trigger element; a discharge module is disposed in the containing space, the discharge module comprising a first component and a second component; the upper electrode, the lower electrode, the trigger electrode and the trigger element are arranged within the first component and the second component, a discharge channel is provided between the upper electrode and the lower electrode; the discharge channel extending in an arc shape on a plane, when the trigger electrode and the trigger element generate an electric trigger arc, the electric trigger arc enters the discharge channel; the electric trigger arc in the discharge channel induces the generation of a electric gap arc between the upper electrode and the lower electrode, and an electric connection therebetween. The overvoltage protection device is capable of better cooling the electric arc gas in the discharge module, and reliably assisting the breaking of working frequency follow-on current and preventing the re-ignition of the electric arc gas in the discharge module.
brevets
