67results about How to "Shorten the arcing time" patented technology

The invention discloses a high-voltage double-break circuit breaker. The high-voltage double-break circuit breaker comprises circuit breaker casings and driving mechanisms, wherein two arc extinguishing chambers are symmetrically arranged in the circuit breaker in a left and right manner, a certain distance is formed between the arc extinguishing chambers, movable cover-plate ends of the arc extinguishing chambers are oppositely arranged, a fixed contact and a movable contact are arranged in each arc extinguishing chamber, the movable contacts are electrically connected with each other and are connected with one ends of connecting-rod mechanisms, and the fixed contacts are led out of the arc extinguishing chambers; the driving mechanisms are connected with the other ends of the connecting-rod mechanisms at the same position through insulated tension rods, the driving mechanisms drive the insulated tension rods to move up and down so as to drive the connecting-rod mechanisms to synchronously move, and further the gathering movement and the separating movement of the movable contacts and the fixed contacts are synchronously realized, wherein the leading-out terminals of the two fixed contacts are used as the circuit access terminals of the circuit breaker. The high-voltage double-break circuit breaker disclosed by the invention solves the problem that the switching voltage of vacuum circuit breakers is not high, and besides, the time for opening or closing a brake is shortened; the mechanical structure is simple, and the reliability of the circuit breaker is improved.

The structure of the moving contact of the high-voltage DC sealed contactor mainly includes the first moving contact piece, the moving contact, the first upper bushing, the electromagnetic drive system, the second upper bushing, the first contact spring and the support washer, each of which passes through The riveting and fasteners and the corresponding fixing holes are connected in sequence; the contact structure adopts a two-way double breakpoint structure, and also includes a second moving contact piece located under the first moving contact piece, and a second moving contact piece set under the second moving contact piece. The supporting adjustment washer on the piece and a second contact spring 1 arranged outside the first contact spring; the first moving contact piece and the second moving contact piece are in double “J” shape. The invention adopts the "J"-shaped structure design of the double-moving contact piece to accelerate the movement and extinguishment of the arc when the contact is disconnected, and reduces the loss of the contact; the use of the moving contact piece and the contact spring structure effectively reduces the ignition between the main contacts. The effective adjustment of arc time, contact wear and contact pressure enables the four breakpoints to be effectively contacted and disconnected, thereby improving product performance and life.

The invention discloses a zero-loss deep current-limiting protection device based on first-wave breaking technology, which includes a protection device body and high-speed switches distributed inside the protection device body; device, display and control, indicator light, button, analog plate, observation window and nameplate, and the inner side of the protection device body is provided with a through-bus bar, a supporting insulator, a quick switch, a first current transformer, a second current transformer and two contact boxes , wherein the through busbar is connected to one of the contact boxes through the supporting insulator, the other contact box is connected to the second current transformer through the first current transformer, and the two contact boxes are connected through a fast switch. The invention has fast action speed, strong breaking capacity, good current limiting effect of the current-limiting reactor, no energy loss, no voltage drop, and no leakage magnetic field, long service life, reliable performance, small action dispersion, and no switching on. rebound.

The invention discloses a universal conversion switch with a magnetic quenching function. The universal conversion switch comprises a square shaft, a contact box, a cam, a movable wafer, a static wafer, a movable contact base and a reset spring. The movable wafer is an elastic metal sheet, and a static contact matched with a movable contact is arranged at one end of the static wafer. According to the universal conversion switch, only one movable contact and static contact pair is arranged in one electric loop, contact and separation of the movable contact and the static contact are conducted by using the reset spring-back pressure of the movable wafer, the separation speed is high, the breaking capacity is high, arcing and burning phenomena are not prone to occurring in the contacts, the stability of the universal conversion switch is improved, and the service life of the universal conversion switch is prolonged. Meanwhile, magnetic steel is arranged at the part, close to the static contact, in the contact box, the magnetic field action direction of the magnetic steel enables electric arcs to move in the moving direction of the movable contact, the magnetic field generated by the magnetic steel enables the electric arcs which may be generated because of large current breaking between the movable contact and the static contact to be lengthened, arc extinguishing is accelerated, and therefore the breaking capacity and the reliability of the universal conversion switch are improved.

The pressure-sensitive silver-base composite ceramic is used as contact material in medium and low voltage electric equipment. The material consists of silver 80-95 wt%, pressure-sensitive composite ceramic 1-15 wt% and metal and metal oxide 0.5-5 wt%. The material of the present invention has low resistivity, high heat conducting and electric conducting performance, high ablation and fusion welding resistance, good machining performace and no toxicity, and may be prepared into wire, plate and rod. It has machining performance superior to Ag/SnO2 material.

The invention discloses a single breakpoint quick-action assistant switch, and the single breakpoint quick-action assistant switch comprises a square shaft, a pull rod, a contact box, a cam, a movable contact spring, a static contact spring, a wiring device, a moving contact seat and a reset spring, the movable contact spring is the elastic metal sheet, one end of the movable contact spring is compressed in the wiring device, a moving contact is formed at the other end of the movable contact spring, a static contact matching with the moving contact is formed at one end of the static contact spring, one pair of moving contact and static contact is formed in the electric loop, the pressing force between the moving contact and the static contact can be kept through the reset spring pressure of the moving contact and the contact pressure of the reset spring in the moving contact seat, so that the contact resistance is low; for breaking, the lifting force to the middle of the moving contact from the moving contact seat can have lever effect for the moving contact, the moving contact can lift upwards fast for separating from the static contact, the separating speed is fast, the breaking capability is strong, the contact pull arc and burning phenomenon will not generated easily, the stability of the assistant switch is raised and the service life is prolonged.

Circuit breakers include an arc chamber and an arc chute comprising a plurality of arc plates in the arc chamber. The circuit breakers also include a line conductor assembly with at least one arc runner attached to a line conductor in the arc chamber. The arc runner can extend below but adjacent to a bottom arc plate to thereby guide a respective arc into the arc chute.

The invention relates to a thermal pluggable electric connector. The thermal pluggable electric connector comprises a plug shell, a socket shell, a jack contact part, a contact pin contact part and asupporting spring coil; an insulating substrate A and an insulating substrate B are arranged in the plug shell and the socket shell respectively; the jack contact part is embedded in the insulating substrate A through the supporting spring coil; the contact pin contact part is embedded in the insulating substrate B through the supporting spring coil; and the contact pin contact part is movably inserted in the jack contact part. By adoption of the technical scheme provided by the invention, when the plug and the socket are connected in a matching manner, the matching precision between the contact pin contact part and the jack contact part is improved, so that electrical connection reliability is improved; and electric arc generated by inserting connection is lengthened under the magnetic force effect of magnetic steel and scattered along an arc guiding angle, so that electric arc extinguishing is accelerated, arc time is shortened, the jack contact region is protected effectively, reliable electric connection is realized, the service lives of the plug and the socket are prolonged, and the plug and the socket are protected.

The present invention discloses one kind of controller for electromagnetic system of universal contactor. The present invention features the whole voltage excitation in switching on, the switching off of FET with an electronic timer before cutting off the whole voltage excitation loop after the iron core is closed and stabilized, and low DC voltage excitation to the electromagnet with a switching power supply; and turning off the FET in the aftercurrent loop with an electronic delayer in switching off for fast attenuation and off. The contactor with the said controller has the capacity of switching on and off short-circuit current similar to that of a breaker, and may be cooperated with weak electrical control circuit to realize remote automatic control.

The invention discloses a small breaker. The breaker comprises a plastic shell, a movable contact, a static contact, an operation mechanism, an electromagnetic tripping mechanism, an arc extinguish chamber and a run-on tab, wherein the electromagnetic tripping mechanism comprises a magnetic yoke; one end of the run-on tab is electrically connected with the static contact, while the other end of the run-on tab extends into the arc extinguish chamber; and the arc extinguish chamber is positioned under the magnetic yoke. The small breaker is characterized by comprising an iron arc guide plate; one end of the arc guide plate, namely a fixed end, is fixed on the bottom of the magnetic yoke, while the other end of the arc guide plate, namely an arc guide end, is bent downwards and close to the movable contact. The small breaker has the advantages of effectively improving the capability of short circuit disjunction of the breaker, easily achieving the level of 6,000A energy level 3, and has short arcing time less than 6 milliseconds.

The invention discloses a combined type auxiliary switch used for a circuit breaker mechanism. The combined type auxiliary switch comprises a square shaft, a front cover plate, a rear cover plate, a pull rod, a first contact box assembly and a second contact box assembly, wherein the first contact box assembly and the second contact box assembly have same outline shapes and are provided with pull rod through holes and square shaft through holes; the thickness of the first contact box assembly is greater than that of the second contact box assembly; the opening distance between movable and static contacts of the first contact box assembly is greater than the opening distance between movable and static contacts of the second contact box assembly; the first contact box assembly is used for controlling an electric circuit with great current or great inductance component; and the second contact box assembly is used for controlling a signal switching circuit. According to the combined type auxiliary switch used for the circuit breaker mechanism, the two contact box assemblies are arranged on one auxiliary switch and combines different requirements of a switching-off/on coil circuit for executing electromagnet movement, and a position and state indication signal switching circuit; and the reliability and the sensitivity of the auxiliary switch are improved and the service life is prolonged.

The invention relates to an arc extinguishing chamber with parallel series and multi-fracture structures, which is suitable for high-voltage circuit breakers, contactors, grounding switches, etc. that are quickly broken and closed. A moving contact and a static contact are arranged opposite to the fracture, and the static contact and the moving contact are respectively placed on the upper and lower sides of the arc extinguishing chamber; the moving contacts are fixed on the moving contact On the parts, the static contacts are all fixed on the static contact fixing part, and the moving contact fixing part is connected to the transmission mechanism outside the arc extinguishing chamber through the transmission rod, and the transmission rod leads out of the arc extinguishing chamber, and cooperates with the supporting and fixing device to realize High voltage switch function. The arc extinguishing chamber of the present invention is a multi-fracture series structure, which can divide the total voltage, reduce the opening and closing stroke, and shorten the opening and closing action time, which is beneficial to the rapid opening and closing of the switch. At the same time, the contact current through the arc is smaller, the arcing time is shorter, and the contact ablation is effectively weakened.

The invention discloses a circuit breaker arc-extinguishing device. The circuit breaker arc-extinguishing device comprises a movable contact, a static contact, an arc-inducing piece, a magnetizing block and an arc extinguishing chamber. The front end of the arc extinguishing chamber is provided with an arc-extinguishing grating, the movable contact is located at the upper portion of the static contact, the head of the front end of the arc-inducing piece is fixedly installed on the static contact, the middle portion and the tail portion of the arc-inducing piece are suspended, the tail portionof the arc-inducing piece is extended to the lower portion of the arc-extinguishing grating, there is a gap between the front end of the arc-extinguishing grating and the static contact, the magnetizing block is arranged in the gap, and the magnetizing block is fixedly installed on the static contact. Charged particles in the arc quickly enter the direction of the arc extinguishing chamber along the arc-inducing piece of the copper materials, the magnetizing block can improve the power of the density of the magnetic field to enhance the magnetic field so as to increase the electric power in the tangential direction, and therefore, the simultaneous effects of the electric field and the magnetic field can improve the movement speed of the arc in the tangential direction to enter the arc extinguishing chamber in a shorter time.