63results about "Circuit-breaking switch details" patented technology

The application belongs to the technical field of switches, and particularly relates to a circuit breaker or disconnector, which increases a backflow channel structure on the side wall of an arc extinguishing chamber, after the circuit breaker or disconnector arcs, the arc moves upwards, the pressure above the arc extinguishing chamber increases, the pressure in the middle region of the moving and static contacts below the arc decreases, the backflow channel is used to supplement the gas in the space behind the arc with the cold gas above, the arc is inhibited from falling back, and the arc extinguishing performance of the product is improved.

The utility model relates to a zero flying arc arc extinguishing chamber structure of circuit breaker, a zero flying arc arc extinguishing chamber structure of circuit breaker, including the casing formed by the upper cover, middle cover and base screw connection, install arc extinguishing chamber in the base, the upper and lower both ends of middle cover are equipped with corresponding several wiring terminals, the arc extinguishing chamber includes contact head support, the arc extinguishing grid piece of several connected in the both sides of contact head support and the peripheral baffle connected in the end of arc extinguishing grid piece, the peripheral baffle is equipped with the air outlet matched with the position of arc extinguishing grid piece, the base still is equipped with the baffle groove and the arc baffle of interference connection in baffle groove, the position of arc baffle corresponds with air outlet, is equipped with several through -holes on this arc baffle, the through -hole array forms the net -like structure, has realized arc baffle alignment air outlet, the arc baffle on the physical isolation blocks arc extinguishing chamber and does not completely extinguish the arc, the through -hole on arc baffle further separates arc, accelerates the remaining arc to extinguish, avoids the short circuit of circuit breaker because of the arc that sprays.

This invention discloses a PCS energy storage inverter cabinet, comprising: a cabinet body, an arc-extinguishing circuit breaker, a PCS inverter assembly, and an input busbar assembly and an output busbar assembly fixed inside the cabinet body. A first electrode and a second electrode are fixedly installed on the inner side of the cabinet body, located at both ends of the arc-extinguishing circuit breaker and electrically connected to both ends of the circuit breaker, respectively. Both ends of the PCS inverter assembly are electrically connected to the second electrode and the ends of the output busbar assembly, respectively. The input busbar assembly includes: a first busbar assembly and, sequentially connected to it, an electrical isolation device, an overcurrent protector, and a filter module. In this invention, by setting an arc-extinguishing circuit breaker structure, the contact head and electrode ears deflect under the mechanical pressing action of the circuit pressure rod to engage the electrodes, improving the closing and opening speed and establishing an effective and stable connection. That is, the distance between the contacts increases significantly within the same time frame, and the electric field strength decreases, which helps to establish a strong arc-extinguishing capability in a shorter time.

The utility model provides a kind of circuit breaker protection mechanism, the purpose is to solve the technical problem that current circuit breaker is extremely easy to produce arc phenomenon when switching operation. The protection mechanism includes: cover plate, it is rectangular structure, cover plate middle part has operating port;Operating member, sliding is set on operating port, operating member has a connecting portion, connecting portion can be connected with the operating lever of circuit breaker;Four extension plates, respectively sliding is set on the periphery of cover plate;Connecting plate, vertically set on the edge of extension plate;Wherein, at least one connecting plate is provided on each extension plate. The protection mechanism is set up by the extension plate that can slide on the periphery of cover plate, adapt to different models circuit breaker, when installation, connecting plate is clamped in the periphery of circuit breaker, the operating lever of circuit breaker passes through from operating port on cover plate, and is connected with operating member power, by operating member, the switching of circuit breaker can be directly operated. By the technical scheme, the safety when operating circuit breaker is improved.

An arc quenching system includes an arc-extinguishing unit and an arc-blowing magnetic unit. The arc-extinguishing unit extinguishing an arc discharge produced upon a switching operation of a contact pair from a closed state to an open state. The contact pair having a static contact and a movable contact which is movable relative to the static contact between the closed state and the open state in which the movable contact is spaced apart from the static contact by a gap. The arc-blowing magnetic unit creates a magnetic field having a plurality of magnetic field lines that cross a gap region of the contact pair along a predetermined magnetic field direction. The arc-blowing magnetic unit creates the magnetic field lines with an orientation based on an electrical polarity of the static contact and a positioning of the arc-extinguishing unit to magnetically blow the arc discharge toward the arc-extinguishing unit.

To provide a circuit breaker which can reduce an external arc space.SOLUTION: A circuit breaker includes a stator 22 having a stationary contact point 22a, a mover 23 having a movable contact point 23a movable when a circuit on a power supply side relative to the stator 22 and a circuit on a load side are connected or interrupted, and an arc-extinguishing chamber 24 having a grid 25 for arc-extinguishing an arc 2 generated at the time of current interruption and an exhaust port 4 for exhausting hot gas generated from the arc 2, wherein a resin structure 5 composed of a resin material is arranged outside the exhaust port 4 and an internal exhaust path 12 of the hot gas is formed, and a metal structure 19 composed of a metal material is arranged on the downstream side of the internal exhaust path 12.SELECTED DRAWING: Figure 2

This application belongs to the field of switch technology, specifically an arc-extinguishing chamber and a circuit breaker or disconnecting switch. The upper part of the arc-extinguishing chamber is divided into multiple independent spaces by a partition structure, which together with the lower arc-extinguishing chamber, forms multiple arc-extinguishing chambers connected in series. Each space has a pressure relief channel connected to the outside. After the circuit breaker or disconnecting switch ignites, the arc moves independently within each partition, preventing the gas in the high-pressure area of ​​the strong magnetic blow-out region from flowing to the low-pressure area of ​​the weak magnetic blow-out region. This effectively promotes the entry of gas into the grid plates (such as the last few grid plates on the moving contact side) in areas with weaker magnetic blow-out force, thereby improving the arc-extinguishing performance of the arc-extinguishing chamber grid plates.

The present application relates to the technical field of measuring electrical variables, and particularly relates to a kind of metering circuit breaker health monitoring method, device and metering circuit breaker, method includes: according to electrical data sample determines the fault accumulation sequence and contact aging sequence of circuit breaker, the circuit breaker importance and contact aging value of target circuit breaker are as its circuit breaker characteristics;Utilize the similarity of circuit breaker characteristics between circuit breaker, determine the initial weight of electrical data sample;Based on initial weight, electrical data sample is carried out LSTM model training and the training weight of electrical data sample is updated until the target error rate of LSTM model is reached;The current electrical data of circuit breaker is input to the LSTM model trained to predict the contact aging parameter of future time period.Through the technical scheme of the present application, the problem that traditional LSTM model is not accurate and convergence speed is low is solved, and the accuracy of circuit breaker aging prediction is improved.

This utility model discloses an insulation protection device for a generator outlet circuit breaker, comprising a grounding flat steel embedded outside the insulation distance around the generator outlet circuit breaker. Several vertical ribs are vertically arranged on the top of the grounding flat steel, and several horizontal ribs are horizontally connected to the vertical ribs. The vertical and horizontal ribs are hollow metal tubes with an insulating layer on their outer surface. The vertical ribs, together with the grounding flat steel and the horizontal ribs, form an insulating fence. A dustproof baffle is installed on the top of the insulating fence, and several temperature sensors are installed on the insulating fence. This technical solution utilizes the strength of stainless steel to achieve the structural strength of the insulating protective net; it uses an epoxy resin coating and a bolt structure with an insulating sheath to avoid structural component heating caused by induced current on the busbar; and it utilizes the reliable connection between the vertical ribs and the grounding grid to achieve zero potential of the external protective structure, ensuring personnel safety and reliability.

To provide a handle lock device of a circuit breaker, capable of enhancing a work safety.SOLUTION: By inserting slide pins 26a and 26b into a first length hole 20 of a chain plate 18 and a second length hole 25 of a lock plate 12, and coupling them to a slide part 21, a handle catch 11 and the lock plate are slidably arranged in a movement direction of a cropping part against the chain plate. At an OFF position of the cropping part, a second chain hole of the slide part and a first chain hole of the chain plate are communicated, and at an ON position of the cropping part, the second chain hole is blocked by the chain plate. Then, the lock plate is moved to a cropping direction while blocking the first long hole of the chain plate.SELECTED DRAWING: Figure 4

The application discloses a kind of arc extinguishing assembly and direct current arc extinguishing chamber, belong to low-voltage electrical apparatus field, a kind of arc extinguishing assembly, including integral arc runner, the rear side of integral arc runner is provided with two groups of split arc runner group, the rear side of split arc runner group is provided with arc guide piece;A kind of direct current arc extinguishing chamber, including arc extinguishing chamber base, the inside of arc extinguishing chamber base is provided with protection assembly, the lower of arc extinguishing chamber base is provided with left side plate and right side plate, left side plate and right side plate are provided with above-mentioned arc extinguishing assembly between, the lower of arc extinguishing assembly is provided with left gas blowing piece and right gas blowing piece.The application is on the basis of existing appearance size, by changing the layout of arc runner to increase the number of arc runner, to realize DC2000V and DC2500V operating voltage requirement;The application is to increase the number of grid piece, increase left and right arrangement scheme design, this arrangement can make the number of arc runner increase 1.5-2 times, greatly improve arc voltage.

The application discloses a circuit breaker, wherein the circuit breaker shell has a first space; an operating mechanism is used to switch the working state of the circuit breaker; a release is used to trigger the operating mechanism when the release is actuated; the operating mechanism and the release are both located in the first space and are sequentially arranged in a first direction; and an insulation barrier is located in the first space and is arranged on the side of the release close to the operating mechanism to separate the two.

This invention discloses a molded case circuit breaker, comprising: a base body; a reinforcing member including a horizontal portion and a vertical portion, the horizontal portion being connected to the vertical portion, the horizontal portion being embedded in the bottom surface of the base body, and the vertical portion being embedded in the corresponding long side surface of the base body; the strength of the reinforcing member being greater than the strength of the base body; the reinforcing member and the base body being integrally injection molded to form the base; and an arc-extinguishing chamber being partially or entirely embedded and fixed within the base. The reinforcing member increases the strength of the base, thereby improving the overall strength of the base and ensuring that even with a rapid increase in internal gas pressure after the rated voltage is increased, the base will not crack or be damaged. This structural design of the reinforcing member increases the connection area between the reinforcing member and the base body, improving the overall strength of the base. Furthermore, this structural design creates a tensile force; when the base is subjected to the impact force generated by an explosion, the connection between the horizontal and vertical portions increases the strength of the connection, ensuring that the base will not break.

The utility model discloses an exhaust structure of an alternating current circuit breaker, which relates to the field of circuit breakers and comprises a shell and an arc extinguish chamber, the shell comprises a middle cover, a left cover and a right cover, the left cover and the right cover are mounted on two sides of the middle cover, and the middle cover is provided with a plurality of first gas guide plates for guiding gas from the arc extinguish chamber to the left side and the right side. The middle cover and the left cover are matched to form a first exhaust channel, the middle cover and the right cover are matched to form a second exhaust channel, a third exhaust channel and a fourth exhaust channel, and a first outlet communicated with the first channel and a second outlet communicated with the second exhaust channel and the fourth exhaust channel are formed in the bottom of the side wall of the shell. And a third outlet communicated with the third channel is formed in the upper surface of the shell. The utility model has the advantages of space saving and good safety.

This application provides a circuit breaker and an energy storage system, relating to the field of low-voltage electrical equipment technology. The system includes a data acquisition unit for acquiring operating status parameters of the energy storage unit and sending them to a control unit; a control unit for determining battery management parameters of the energy storage unit based on the operating status parameters and sending the operating status parameters and battery management parameters to a communication unit; a communication unit for forwarding the operating status parameters and battery management parameters to external devices, receiving opening or closing control signals sent by external devices based on the operating status parameters, and sending these signals to the control unit; a control unit for generating opening or closing control commands and sending them to an opening / closing unit; and an opening / closing unit for performing opening or closing control. This system enables the circuit breaker to have both safety management functions and battery power management functions, improving its applicability.

Embodiments of the present disclosure provide a method and apparatus for monitoring a switching unit in a solid-state circuit breaker. The switching unit includes a first set of power devices, a first electrode of each power device in the first set of power devices is electrically connected to a first node, and a second electrode of each power device in the first set of power devices is electrically connected to a second node. The method includes: during a main loop current flowing from the first electrode to the second electrode of the first set of power devices in a first direction, causing a first turn-off voltage to be applied to a gate of each power device in the first set of power devices in a first time period; in response to the application of the first turn-off voltage, obtaining a voltage across a first capacitive element connected in series with a first resistive element between the first node and the second node; and based on the voltage across the first capacitive element, determining whether a turn-off function of each power device in the first set of power devices is normal when the main loop current flows therefrom in the first direction.

Disclosed are a circuit breaking unit and an air circuit breaker including the same. The present disclosure provides a circuit breaking unit, including a fixed contact; a movable contact that is in contact with or spaced apart from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a movable contact terminal including the movable contact and configured such that the movable contact is formed to move in a direction toward the fixed contact or in a direction away from the fixed contact; a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal; and a protruding contact disposed extending upward from the movable contact, energized when in contact with the low runner, and spaced apart from the low runner when the movable contact is tripped.

An arc extinguishing system, a circuit breaker and a plug-in circuit breaker, the arc extinguishing system comprising an arc extinguishing chamber provided with a plurality of arc extinguishing vanes, one end of the arc extinguishing chamber being an air inlet and the other end being an air outlet, one end of the arc extinguishing vanes corresponding to the air inlet being provided with an arc extinguishing gap, the arc extinguishing chamber comprising at least two kinds of arc extinguishing vanes with different lengths, the at least two kinds of arc extinguishing vanes being flush arranged at one end close to the air inlet, the arc extinguishing vanes being staggered arranged at one end close to the air outlet, the arc extinguishing system not only having strong arc extinguishing capability, but also being capable of avoiding arc reignition; the circuit breaker and the plug-in circuit breaker comprising the arc extinguishing system, being capable of quickly extinguishing and discharging arc.

The application relates to the technical field of power distribution equipment, and discloses a circuit breaker with an external voltage sensor, which comprises a circuit breaker body, a support arranged on the circuit breaker body, and a voltage sensor arranged on the support; the support comprises two symmetrical stand columns, a connecting rod arranged between the two stand columns, and a support rod arranged on the same side of the two stand columns; one end of the support rod is slidably provided with a limiting baffle; the limiting baffle and one side of the stand column are provided with a hanging plate; and two hanging plates on the same side are hung in the mounting groove of the mounting base; one side of the stand column away from the support rod is provided with a support seat with adjustable height and length; the application can effectively improve the flexibility of support adjustment, thereby improving the convenience of construction; meanwhile, the positioning and installation of the circuit breaker are completed by connecting the mounting base and the support; when the circuit breaker is disassembled and repaired, the mounting base does not need to be removed, damage to the original mounting position is avoided, and the use in a limited space is met.

The application relates to a 1000V photovoltaic energy storage direct-current small circuit breaker, and relates to the technical field of circuit breakers, which comprises a shell of the circuit breaker, an operating mechanism arranged in the shell and used for connecting or disconnecting a circuit, and an arc extinguishing module which is detachably arranged in the shell. The arc extinguishing module comprises a module shell, a shape memory alloy driving piece and a lock tongue, the shape memory alloy driving piece is driven to deform by heat to drive the lock tongue to be clamped into a locking clamping groove in the inner side wall of the shell to realize locking. The application has the technical effects that the arc extinguishing module is detachable, can be locked and displayed after experiencing the heat action of an electric arc, the opening and closing states of the operating mechanism are guaranteed, and the gas in the arc extinguishing module can be effectively led out.

The present invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. The circuit breaker includes a circuit breaker housing, and an operating mechanism, a contact system, a wire-incoming terminal, a wire-outgoing terminal, an arc-extinguishing chamber and a thermomagnetic tripping mechanism arranged in the circuit breaker housing. The contact system includes a first contact structure and a second contact structure which are arranged in synchronous rotation. In a height direction of the circuit breaker, an operating member of the operating mechanism, the contact system and the arc-extinguishing chamber are arranged sequentially; and in a length direction of the circuit breaker, the wire-incoming terminal and the wire-outgoing terminal are located at both ends of the circuit breaker, the contact system and the arc-extinguishing chamber are located between the wire-incoming terminal and the wire-outgoing terminal, the contact system and the arc-extinguishing chamber are located on one side of the thermomagnetic tripping mechanism, the wire-incoming terminal or the wire-outgoing terminal is located on the other side of the thermomagnetic tripping mechanism, and the first contact structure and the second contact structure are arranged side by side. The circuit breaker is more reasonable in internal layout, and provides a larger assembly space for the arc-extinguishing chamber.

The present application relates to a kind of electric power protection devices, in particular to a kind of internet of things intelligent electric power protection equipment.A kind of internet of things intelligent electric power protection equipment includes circuit breaker, and the circuit breaker includes shell, handle, arc extinguishing grid piece group, centrifugal impeller and transmission device.Hollow passage is communicated with outside in the inside of arc extinguishing grid piece group set in arc extinguishing chamber is arranged.The centrifugal impeller is arranged in hollow passage, and both ends are rotatably installed in shell, for when rotating, the air flow of outside is guided to arc extinguishing chamber.Transmission device is connected rotation axis and centrifugal impeller, to when switching off, the rotation movement generated by handle is transmitted to centrifugal impeller, makes centrifugal impeller rotate, and air flow is guided to arc extinguishing chamber by hollow passage, makes arc extinguishing chamber fast pressure relief, avoid its risk easily caused by not timely pressure relief.

This application provides a circuit breaker and power equipment. The circuit breaker includes an upper housing, a lower housing, and a busbar. The upper housing includes a piston cavity, the piston cavity accommodates a piston, and the piston moves after being subject to force, to cut off the busbar. The lower housing includes an arc-extinguishing chamber cavity, where the arc-extinguishing chamber cavity accommodates an arc chute. The circuit breaker further includes at least one gas chamber and at least one gas channel. The gas chamber is disposed in the upper housing and / or the lower housing. One end of the gas channel is connected to the arc-extinguishing chamber cavity, and the other end of the gas channel is connected to the gas chamber. A first clearance exists between the arc chute and a first side wall of the lower housing. The gas channel includes the first clearance. In this way, high-temperature and high-pressure gas generated due to arc extinction in the lower housing can be guided to the gas chamber for cooling, to reduce a safety risk. In addition, compared with a manner of directly discharging the high-temperature and high-pressure gas to the outside, other components in the power equipment are not damaged.

The utility model provides a kind of connecting terminal for connecting wire to electric switch device and circuit breaker comprising connecting terminal.Connecting terminal includes: terminal block, including multiple side walls and the cavity formed by multiple side walls, the cavity is opened at both ends opposite each other in the direction along wire insertion therein, multiple side walls include upper side wall and lower side wall opposite each other, and part of the upper side wall is formed with the first through-hole for screw passing;Terminal lug, including the terminal portion extending in terminal block, and terminal portion is arranged at another part of the upper side wall without forming first through-hole;Clamping piece is arranged in cavity, and clamping piece includes first part facing terminal portion and second part facing the first through-hole of upper side wall, and first part is arranged between terminal portion and lower side wall, and second part includes threaded hole corresponding with the first through-hole of upper side wall for screwing into by screw.The connecting terminal has simple structure and smaller overall size.

The application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker, the length direction, the width direction and the height direction of which are direction d1, direction d2 and direction d3 respectively, and a front moving contact assembly and a rear moving contact assembly are synchronously and reversely arranged and the rotation axes of the two assemblies are parallel to direction d2; in direction d2, the front moving contact and the rear moving contact are arranged in a staggered mode, and the front static contact of the front static contact and the rear static contact of the rear static contact are arranged in a staggered mode; in direction d1, the front moving contact is arranged side by side with the front static contact, and the rear moving contact is arranged side by side with the rear static contact; in the tripping state of the circuit breaker and in direction d2, the front moving contact is arranged side by side with the rear static contact, and the rear moving contact is arranged side by side with the front static contact; the circuit breaker has good breaking performance.

A circuit breaker comprises a load (1) and a circuit breaker body (2), the circuit breaker body (2) is internally provided with a breaking part (2a), the breaking part (2a) comprises at least two breaking poles, the circuit breaker body (2) is connected with the load (1), and each end of the load (1) is connected with at least one breaking pole, characterized in that the circuit breaker body (2) is internally provided with a switching part (2b), and the circuit breaker body (2) is externally provided with a switching conductor (6), and the switching part (2b) and the switching conductor (6) can change the opposite direction current in the two breaking poles directly connected with the two ends of the load (1) into the same direction current, so as to improve the breaking capacity of the circuit breaker.

The application relates to the technical field of arc-extinguishing chamber mounting supports, and discloses a universal circuit breaker arc-extinguishing chamber insulation support which comprises an arc-extinguishing chamber, the arc-extinguishing chamber comprises a ceramic cylinder, two rod pieces are oppositely arranged in the ceramic cylinder, and the two rod pieces are respectively a static contact rod arranged at the upper portion and a moving contact rod arranged at the lower portion; the tail ends of the static contact rod and the moving contact rod penetrate through the corresponding end faces of the ceramic cylinder; two groups of support assembly are arranged on the arc-extinguishing chamber; each group of support assembly comprises a support frame which is movably connected to one end of the ceramic cylinder. Through the sliding cooperation structure of the horizontally movable positioning clamping plate, the convex strip and the stable notch, and the self-adapting pre-tightening force provided by the compression spring in the push rod mechanism, the positioning clamping plate can automatically adjust the clamping spacing according to the diameter of the end portion of the ceramic cylinder, ceramic breakage caused by rigid clamping is avoided, stable fixation in long-term use is ensured, the positioning bolt can be finally locked after clamping in place, and the double fixation structure significantly improves the anti-vibration and anti-impact capability.

To make it possible to maintain an open pole position of a movable contact with a simple structure during current limiting cutoff and to be applicable to a small-sized model in a circuit breaker.SOLUTION: At a fixed contact 12, a fixed contact point 33 is formed. A movable contact 13 is supported rotatably, a movable contact point 34 is formed outside in a radial direction, and the movable contact point 34 is brought into contact with or leaves the fixed point 33 by rotation. A magnetic substance 41 is provided between the movable contact 34 and rotary center of the movable contact 13. A magnetic substance 42 is provided on a middle cover 22 and faces the magnetic substance 41 when the movable contact 13 is opened; when the movable contact 13 is opened by an electromagnetic repulsive force during short circuit, the magnetic substance 41 and the magnetic substance 42 are absorbed to each other by a magnetic path being formed around an axis in a conducting direction flowing in the movable contact 13 by an arc.SELECTED DRAWING: Figure 4

The utility model relates to a low voltage electric appliance technical field especially, and is concerned with a frame circuit breaker arc chamber's mounting structure and frame circuit breaker. The frame circuit breaker arc chamber's mounting structure provided by the utility model includes: phase-to-phase arc blocking compression spare and end compression block, phase-to-phase arc blocking compression spare includes phase-to-phase compression block and the phase-to-phase arc blocking board of setting in the top of phase-to-phase compression block, phase-to-phase compression block is used for synchronous compression adjacent arc chamber, and the phase-to-phase arc blocking board is used for shielding the metal spare on arc chamber casing and / or provides compression force to the side wall opposite to adjacent arc chamber casing, and end compression block is used for compression end arc chamber. The limiting rib of adjacent arc chamber can be synchronous compression on the base plate through phase-to-phase compression block, and the limiting rib of end arc chamber can be compressed base plate through end compression block, makes arc chamber installation more convenient, and the metal spare on arc chamber casing can be shielded through phase-to-phase arc blocking board, and phase-to-phase breakdown can be effectively avoided.