307 results about "Fuse cutout" patented technology

This utility model relates to an easy-to-weld installation structure for a fuse, belonging to the field of electrical equipment protection. It includes a fuse body, connecting contacts located on both sides of the fuse body, and a copper busbar for mounting the fuse body. The connecting contacts are provided with pre-installed components that directly contact the copper busbar. The connecting contacts and the copper busbar are directly in contact and fixed together by welding. This application effectively reduces unstable contact resistance caused by insufficient connection.

The application provides a synchronous trigger fuse control circuit and a synchronous trigger fuse, which comprise an internal trigger module and an external trigger module; the external trigger module is connected to a conductor of the synchronous trigger fuse and is used for receiving an external trigger signal; when the external trigger signal is received or an internal trigger signal on the conductor is collected, a first ignition device is triggered to cut off the conductor to cut off a protected circuit; the internal trigger module is connected to the conductor of the synchronous trigger fuse and is used for triggering a second ignition device to cut off the conductor to cut off the protected circuit when the internal trigger signal on the conductor is collected; or the second ignition device is triggered to cut off the conductor to cut off the protected circuit according to a second current generated after the conductor is cut off. Through the synchronous trigger mechanism, the first ignition device and the second ignition device can be triggered, and the problem that there is still an ignition device with gunpowder left after the fuse ends the protection action is solved.

The utility model relates to the field of fuse, relate to a small breaking fuse, the utility model discloses: fuse tube, fuse and two groups of electric contact, the fuse includes fuse and two groups of electric block, the fuse is welded in the inside of electric block, the electric contact includes terminal and fixed cap, the terminal is fixed in the outside of fixed cover, the fixed cap is covered in the end of fuse tube, the fixed cover inside fixedly has the connecting block, be equipped with the slot in the connecting block, the electric block is inserted in the slot, in the assembly, the electric block in the fuse assembly is directly inserted into the slot of connecting block, can realize the connection of fuse and electric contact, and then complete the assembly of whole fuse, the originally complicated field welding connection changes into simple plug -in connection, simplifies the assembly flow, improves production efficiency.

This invention relates to the field of electrical protection technology and discloses a fuse and its manufacturing method. The fuse includes: a tube body; a fusible element disposed inside the tube body; inner caps disposed at both ends of the tube body, with the two ends of the fusible element welded to the inner caps at both ends of the tube body; and an external terminal welded to the inner cap. This invention provides a fuse that allows the external terminal and inner cap to be welded together, reducing the impedance caused by the interference fit assembly method in the prior art, thereby reducing its power consumption while ensuring electrical protection capabilities.

This application provides a fuse box, a fuse, a battery module, and an electrical device, relating to the field of fuse technology. The fuse box includes a housing assembly and at least one terminal. The housing assembly has a mounting cavity for mounting a first fuse assembly or a second fuse assembly. The first fuse assembly differs from the second fuse assembly. The terminal is located on the housing assembly and is used to connect to the first or second fuse assembly. The fuse box provided according to this application embodiment can accommodate the installation of fuse assemblies of different specifications, offering greater versatility and reducing the amortized cost of mold making.

This utility model belongs to the field of fuel cell accessories and discloses a quick-connect fuel cell power distribution box. The power distribution box consists of a top cover and a base; the base has a support surface for placing power distribution and control components, and a fixing pad is connected to the bottom of the base; a sealing ring is provided at the top edge of the base; the top cover is placed on the base. This utility model fuel cell power distribution box has low cost, small size, low failure rate, and high waterproof rating. The internal structure of this power distribution box fixes relays, fuses, and wiring harness terminals without the need for connectors, which effectively saves costs. Since there are no control chips and circuit boards inside, internal space is saved and the failure rate is reduced. This power distribution box has added waterproof plugs and sealing plugs, and the waterproof rating reaches IP67.

1. The name of the design product: pyrotechnic fuse. 2. The use of the design product: short circuit protection for electric circuit. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The application discloses a fuse shell and a fuse, and relates to the technical field of fuses, wherein the fuse shell comprises a shell body, at least one first partition and at least one second partition, the shell body is formed with an arc-extinguishing cavity and a buffer cavity distributed along a first direction; the first partition and the second partition are distributed along the first direction, the at least one first partition is arranged between the arc-extinguishing cavity and the buffer cavity, and the at least one second partition is arranged in the buffer cavity; wherein the first partition is provided with a first air vent, the second partition is provided with a second air vent, and the first air vent and the second air vent are arranged in a staggered mode along the first direction. The technical scheme of the application sets the first partition between the arc-extinguishing cavity and the buffer cavity, at least sets the second partition in the buffer cavity, and arranges the first air vent on the first partition and the second air vent on the second partition in a staggered mode, so that the breaking capacity of the fuse is improved, and the breaking effect of zero flying arc is facilitated to be realized.

This application provides a monitoring system based on an intelligent drop-out fuse, including an insulating support, a fuse tube, a fuse wire, an upper contact mechanism, and a lower contact mechanism. The insulating support includes a skirt section and insulating ends located on the upper and lower sides of the skirt section. A secondary cavity is provided inside the upper insulating end. The skirt section includes two main skirts connected vertically, and a main cavity is located at the connection point of the two main skirts. A voltage and current sensor is installed in the secondary cavity. A metering chip and a wireless communication module are installed in the main cavity. Several communication ports are provided on the outside of the main cavity. The metering chip is electrically connected to the voltage and current sensor, the wireless communication module, and the communication ports. This application can collect voltage and current signals, calculate and output operating parameters through the metering chip, measure the active and reactive energy of each phase, and then transmit the data to a remote location via the wireless communication module. Through real-time monitoring, it can respond to faults more quickly, reduce the damage to equipment caused by faults, and reduce on-site maintenance work.

The application discloses a kind of injection fuse disconnecting switch combination electric appliance, it is related to electric power switch technical field, including installation support, switch mechanism is arranged on the installation support.The injection fuse disconnecting switch combination electric appliance, when the load fuse tube inside the injection fuse main body is replaced, the handle is pulled using operating lever to make the contact breaker from the inside of second U-shaped terminal block disengaging, using contact breaker drives rotating shaft rotation, through rotating shaft and interlock mechanism drives insulating baffle to remove from the lower part of injection fuse main body, to unblock to the lower part of injection fuse main body, so that load fuse tube is exposed to carry out disassembly, in addition, after load fuse tube is installed in injection fuse main body, operating lever is used to push contact breaker and is inserted into the inside of second U-shaped terminal block, at this time, using the transmission of rotating shaft and interlock mechanism drives insulating baffle to move to the lower part of injection fuse main body, and good safety.

This invention provides an energy storage converter module, including a housing, a fixing member, an electrical connection unit, a circuit breaker, a fuse, and a front panel assembly. The housing has a maintenance window, the fixing member has an insulating mounting portion facing the maintenance window, the electrical connection unit has a first terminal and a second terminal, the circuit breaker has an operating shaft, and the fuse is adapted to be detachably fixed to the insulating mounting portion, the first terminal, and the second terminal along the Y-axis and is adapted to be detached from the front end of the fixing member through the maintenance window. The front panel assembly includes a front panel covering the maintenance window and an operating handle, the operating handle being adapted to be detachably fixed to the operating shaft to drive the circuit breaker to open and close. The fuse of this application is easy to maintain.

A high-voltage and high-current fast fuse comprises an end cover, a contact, a fuse tube, a fuse body, a fuse body guide column, arc extinguishing filler and a fastening screw, characterized in that two or more fuse body guide columns are arranged in the fuse tube, the fuse body is fixed on the fuse body guide column in a spiral winding manner, the contact is provided with a fuse body perforation, the fuse body is welded on the outer end surface of the contact through the perforation, the end cover end surface is overlapped on the outer end of the contact and is connected and fixed with the contact through the fastening screw installed hole of the end cover and the contact and the fastening screw. The disadvantages of poor welding are overcome to the maximum extent. In the case of not increasing the length of the fuse tube or even shortening the length, the rated voltage and the rated current of the fuse can be effectively improved, the anti-impact and anti-bumping capabilities of the fuse are improved, and the fuse can be used to protect the integrated power system of a ship, a large energy storage and power transmission system and other high-voltage and high-current power transmission systems.

This invention discloses a waterproof high-voltage distribution box with rapid maintenance capability, relating to the field of high-voltage power distribution equipment. This invention solves the problems of poor space adaptability, inconvenient maintenance, and insufficient protection level of existing high-voltage distribution boxes. The box has a top window and a rear maintenance window, with recessed bosses at the windows. The cover plate has bent edges, and a silicone foam sealing gasket is placed between the two, secured with combination screws. The interior of the box is divided into upper and lower layers by a middle mounting plate, with positive and negative components mounted on the middle and bottom mounting plates respectively. Vulnerable fuses are concentrated at the maintenance windows, and a vent valve is installed on the outer wall of the box. This distribution box is suitable for compact spaces, has good waterproof sealing, and allows for rapid replacement of vulnerable parts, improving electrical safety and making it suitable for power distribution scenarios of new energy equipment.

The present invention relates to a fuse device for high-voltage applications, comprising a housing (10), an actuation chamber (12) and an arc-extinguishing chamber (14) formed within the housing (10), a busbar (16) extending through the housing (10) and between the actuation chamber (12) and the arc-extinguishing chamber (14), and a separation element (34) that moves out of the actuation chamber (12) and against the busbar (16) by means of an actuator (32), wherein a section (42) of the busbar can be moved to the arc-extinguishing chamber (14). In this invention, the busbar (16) is cut at a first predetermined break point (74); and a guide element (48) extends into the arc-extinguishing chamber (14) and has two opposing sidewalls (52, 54) that extend to a support surface (102) that defines the arc-extinguishing chamber (14) along the direction of movement of the separating element (34), and when viewed along the direction of movement of the separating element (34), the two sidewalls extend past opposing longitudinal sides (55) of the busbar segment (42) to be separated. The object of the invention is to extinguish the arc more quickly by squeezing the arc in a gapless manner in the triggered state. This is achieved by providing stiffeners (111) on the two sidewalls (52, 54) that extend along the direction of movement of the separating element (34) and at least along the length of the sidewalls (52, 54) to a support surface (102) that defines an arc-extinguishing chamber (14) along the direction of movement of the separating element (34) and abuts against the support surface when the separating element (34) moves into the arc-extinguishing chamber (14).

This utility model discloses a relay power supply, including a main control circuit. The main control circuit includes a switching power supply, an intermediate relay, a circuit breaker, and a fuse. The switching power supply is externally connected to the live and neutral wires of the power supply cable. A circuit breaker QF1 is installed on the live and neutral wires. An intermediate relay KA1 is installed on the live wire. The coil of the intermediate relay KA1 is connected to the TB terminal. The contacts of the intermediate relay KA1 are connected to the switching power supply PS1. Fuses FU1 and FU2 are installed at the output terminal of the switching power supply PS1. Thus, by adding a relay power supply at the previous station (not exceeding 200 meters), the next station (exceeding 200 meters) can be controlled. This utility model enables power supply to stations exceeding 200 meters.

The utility model discloses an auxiliary operation instrument of drop-out fuse, related to electric power equipment auxiliary tool technical field, including operating lever and the open -and -close subassembly of installation in operating lever top, open -and -close subassembly includes installation department and open -and -close department, and installation department includes mounting seat, and open -and -close department includes guide frame, contact rod and tension spring, and guide frame detachable installation is on mounting seat, and the end portion fixed with mounting block of guide frame away from its with mounting seat is connected, and contact rod sets up horizontally, and is connected with mounting block through tension spring. The utility model discloses utilize contact rod to close and disconnect the operation when all can utilize tension spring and play the buffering effect, can effectively reduce the occurrence of the damage condition of fuse tube that too much force leads to, when too much force leads to tension spring to continue playing the buffering effect when closing and disconnecting operation process, and contact half pole is separated from the spacing slide bar and loses the spacing effect, thereby losing the support effect to fuse tube, further prevent too much force leading to fuse tube damage.

The utility model provides a kind of pantograph overhauling circuit, comprising first air switch, first fuse, first button, second button, first relay, second relay, third relay, first time relay, second time relay, first indicator light, second indicator light, first pressure controller, first differential pressure controller, first solenoid valve;The utility model is innovative design to air path and circuit, when opening U9 valve simulation air path leaks, solenoid valve is disconnected and closed, and total wind source is cut off.Real-time detection and safety control to air path are realized, problems in air path system can be found in time and handled through this innovative scheme, to avoid the occurrence of safety accident, pantograph overhauling work is provided with more safe and reliable guarantee.

The application discloses a high-voltage box with high anti-vibration performance, and relates to the technical field of energy storage systems; and specifically comprises a high-voltage box body internally provided with a fuse, a relay and a main control module, and a connecting socket fixedly installed on the outer wall of the high-voltage box body. The intermediate flexible part of the soft copper bar can effectively buffer and absorb vibration energy, prevents vibration from being transmitted from the connecting socket to key elements such as the fuse and the relay, and solves the problem that the bolts of a traditional hard copper bar are prone to loosening in a multiple-vibration environment. Various special-shaped terminals are automatically positioned and prevented from deviating during connection through geometric shape design, thereby improving assembly efficiency and consistency. Heat-absorbing fins are provided with vertical guide grooves one on both sides, a bottom part is provided with a guide groove two parallel to the bottom end of the fin, and a connecting block is provided with a guide groove four on the bottom part, so that the three form a continuous condensate water flow guide network, condensate water on the surface of the fin is actively guided to the gathering connecting box, and the influence of the condensate water is avoided.

This utility model discloses a high-voltage drop-out fuse pull ring, relating to the field of fuse technology. It includes a cap, a connector, a fixing plate, a pull ring, and auxiliary components. The cap and connector are installed together. The pull ring is laterally connected to the connector via a connecting rod. An auxiliary component is fitted around the pull ring, providing light shielding and positioning for the pull ring. The auxiliary component consists of a side plate and a middle plate. In this utility model, the side plate and middle plate provide light shielding around the pull ring, facilitating quick location of the pull ring's lateral holes even under light illumination. The positioning hole allows the operating rod to smoothly enter the positioning hole when it contacts the side plate during operation, accurately positioning the pull ring and improving the overall stability of the device. The notch maintains light shielding while improving visual accuracy of the pull ring.

The application relates to the technical field of low-voltage electrical equipment, and discloses a fuse-type isolating switch which comprises a shell, a mounting bin is arranged in the shell, a plurality of mounting grooves are arranged in the mounting bin, a fuse body is arranged in the mounting grooves, an electricity-connection end is fixedly arranged on one side of the fuse body, a plurality of electricity-connection parts are arranged in the shell, the electricity-connection end is arranged on the inner side of the electricity-connection part, a sealing plate is fixedly connected to one side of the mounting bin and closely adheres to the outer side surface of the shell, an elastic plate is arranged below the electricity-connection part, a plurality of groups of insulating plates are fixedly connected to the top surface of the elastic plate, and an outer frame is fixedly connected to the bottom surface of the shell. Through cooperation of the insulating plates and the linkage assembly, the fuse body can be quickly plugged and replaced, the mechanism can be powered off at the same time, the safety of operation is ensured, and the main power supply does not need to be disconnected.

1. Name of the product in this design: Fuse. 2. Purpose of this design: For overload and short-circuit protection of circuits. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model relates to a kind of three-phase voltage transformers of compartment, including shell and first, second single-phase mutual inductor, the top of shell is arranged three-phase, each phase includes a root of fusing tube, shell also includes three internal fusing tubes, the inner wall of the tube bottom of each internal fusing tube is arranged with spring contact finger, fuse is placed in tube, second nut is installed in tube mouth, the primary winding of first, second single-phase mutual inductor is electrically connected with first to fourth electrically conductive pole respectively, define three fusing tubes as first to third fusing tube, the other end of first electrically conductive pole is electrically connected with the spring contact finger of first fusing tube, the other end of second electrically conductive pole, third electrically conductive pole is electrically connected with the spring contact finger of second fusing tube, the other end of fourth electrically conductive pole is electrically connected with the spring contact finger of third fusing tube. Utilize a kind of three-phase voltage transformers of compartment designed by the utility model, can solve the problem of traditional three-phase voltage transformer common fusing tube, compact structure, increased operation and maintenance difficulty, reduced replacement efficiency.

This invention relates to the field of fuse technology and discloses an intelligent electric drop-out fuse, comprising a support assembly, the support assembly including an insulating support, a fixing member fixedly connected to one side of the top of the insulating support, a moving contact piece fixedly connected to the inner side of the top of the fixing member, a solenoid coil electrically connected to the top of the moving contact piece, a fuse tube assembly mounted at the bottom of the moving contact piece, and a self-cleaning assembly fixedly connected to one side of the top of the fuse tube assembly, the self-cleaning assembly including a mounting plate, a slider mounted on the top of the mounting plate, and a scraper fixedly connected to the top of the slider. When the solenoid coil is energized, it generates a magnetic field, eliminating contact welding. The fuse tube assembly releases air, releasing the locking block and allowing the scraper to contact the contact. The self-cleaning mechanism, combined with the drop-out of the fuse tube assembly, prevents the fuse from failing to drop due to welding of the moving contact piece. The angle between the scraper and the top of the slider is between 60-75°, avoiding the problem of the fuse failing to drop due to welding of the moving contact piece.

The utility model relates to fire prevention technical field discloses fire -fighting is with fire -retardant curtain door quick fuse release mechanism, including door frame, the front side of door frame is opened with mounting slot, the inside rear side fixedly connected with protection cover of mounting slot, the front side top right end of door frame is fixedly connected with support plate, the top fixedly connected with temperature detector of support plate, the front side middle upper part left end of door frame is fixedly connected with smoke transducer, the front side middle left end of door frame is fixedly connected with power, the front side middle lower part left end of door frame is fixedly connected with fuse. In the utility model, temperature detector and smoke transducer monitor environmental temperature and smoke concentration, once temperature sharply rises to preset value or is smoke concentration overproof, make heating pipe rapid heating, make fuse quick fuse, lose the special grade fire -retardant curtain door of restraint, under the action of gravity automatic falling, form fire -proof barrier, increase fire -retardant partition effect.

This invention relates to the field of fuse technology, specifically a surface-mount fuse, comprising an insulating shell and a molten metal element. The insulating shell has side cavities and an inner platform. The side cavities are located at both ends of the inner platform. A narrow cavity communicating with the side cavities is located within the inner platform, and the cross-sectional area of ​​the side cavities is larger than that of the narrow cavity. The molten metal element is disposed through the narrow cavity, with both ends of the molten metal element positioned within the side cavities. The surface-mount fuse of this invention has advantages such as high breaking capacity, lead-free design, simple manufacturing process, and low cost. The design of the insulating shell in this invention incorporates four arc-extinguishing mechanisms: the rapid cooling effect of the high thermal conductivity of quartz sand on the electric arc; increased mechanical strength and impact resistance due to the thicker wall in the middle of the shell; arc-extinguishing effect of arc-extinguishing gas generated by the high-temperature ablation of the shell surface; and increased cross-sectional area of ​​the inner holes at both ends of the shell to provide pressure relief space. These mechanisms improve the breaking capacity of the product.

The utility model relates to the technical field of electrical protection devices, in particular to a fuse link, which comprises a first bending fuse body, a second bending fuse body and a third bending fuse body, the second bending fuse body and the third bending fuse body are respectively arranged on two sides of the first bending fuse body, the first bending fuse body is free of punching holes, and the third bending fuse body is free of punching holes. Punched holes are formed in the second bent melt and the third bent melt, the current direction is defined as the first direction from top view, and the first distance between the punched holes in the two sides of the first bent melt in the first direction is larger than the second distance between the adjacent punched holes in the second bent melt in the first direction. The first interval is larger than a third interval between the adjacent punched holes of the third bending melt in the first direction, the third interval is equal to the second interval, and the first interval is at least 1.5 times of the second interval. Through the arrangement, the device can ensure the fusing distance of the fuse when the fuse is fused at high-voltage low-power rated current, improves the voltage endurance capability of breaking, and reduces the probability of breaking failure.

This utility model discloses an online monitoring device for drop-out fuses. Key technical features include a monitoring device body, which integrates a power supply module, a communication module, and a position sensor. The monitoring device body has a split structure, comprising at least two separable and combinable components. When combined, these components form an installation cavity through which the fuse tube passes. The monitoring device body has a protruding clamping block extending from it, with a sliding groove containing a claw that can move closer to or away from the clamping block. A control rod connected to the claw is also located within the groove. This utility model secures fuse tubes of different sizes by clamping them with the clamping block. The control rod allows for easy and convenient operation of the claw to move closer to or away from the clamping block, facilitating easy assembly and disassembly. The split design of the monitoring device body allows for installation around the fuse tube, achieving a closed magnetic circuit and improving current detection accuracy.

The utility model relates to ceramic tube fuse technology field especially relates to an assembled firm ceramic tube fuse, including the shell, the both sides end face center of shell has screw hole respectively, and the inside of the positioning cavity of shell is rotated and is connected with the insulating plate through fixed shaft respectively on both sides, and the inner end of insulating plate is provided with the compression piece, and the screw hole is screwed into the locking block, the inside of locking block is inserted to the wiring terminal in the through, and the wiring terminal is inserted and is placed between the compression piece of up and down along the center of locking block and inwards, and the locking block is screwed inwards and pushes the insulating plate and rotates around the fulcrum, and the wiring terminal is pressed tightly by utilizing the compression piece, the ceramic tube fuse that the utility model puts forward, and the locking block of fuse is screwed in from outside to inside and can act on two insulating plates in the fuse simultaneously, ensure that the symmetrical insulating plate of up and down can press connect the wiring terminal, and moreover, utilize the thread column self -locking characteristic of locking block and guarantee that the wiring assembly is firm between the insulating plate and wiring terminal.

The application discloses a kind of multi-interface high-voltage box, it is related to energy storage system technical field;Specifically including the high-voltage box main body formed by high-voltage box body and high-voltage box cover, the inside of high-voltage box main body is laid through electric connection and is connected with relay, fuse and main control module, and the outer wall of high-voltage box body is fixedly installed with multiple connection sockets, and the connection socket is connected with relay, fuse through copper bar, the main body of the connection socket is set as the socket main body with socket terminal installed on back, and the bottom of the socket main body is provided with plug fixing shell.The limiting section and the clamping strip slot of the plug are set, the limiting clamping strip is provided on the socket, and the insertion gap is reduced;By fixed threaded pin is screwed into socket body blind hole type fixed pin hole, mechanical locking is realized, axial relative displacement is prevented;Ensure that the wire core connection terminal and socket terminal are in continuous close contact, avoid loosening or contact resistance increase due to vibration in long-term operation.