39 results about "Electrical protection" patented technology

The utility model discloses a kind of insulation parts of power equipment convenient to install, belong to electrical protection technical field, it includes insulating cover, the insulating cover one side is rotatably connected with insulating baffle by pin shaft, the insulating baffle top is fixedly installed with clamping strip, the insulating cover top one side is fixedly installed with mounting seat, the inside middle fixed mounting of mounting seat is with partition. The insulation part of power equipment convenient to install, two clamping plates are separated from clamping strip, so that insulating baffle can rotate and separate from insulating cover surface, make the air switch inside insulating cover expose and be adjusted control, again insulating baffle is rotated back to insulating cover surface, repeat the above operation, loosen two sliding plates, so that sliding plate is clamped in clamping strip under the action of reset spring reset springback, make insulating baffle be fixed on insulating cover surface, so that after completing adjustment to air switch, continue to carry out insulating protection to air switch.

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 an electric motor, an electric propulsion device, and an aircraft. The electric motor includes: a stator having a cavity; a rotor rotatably connected to the stator via a shaft; and the rotor being insulated from the stator; a conductive component disposed within the cavity, one end of the conductive component being conductively connected to the shaft, and the other end extending to the outside of the electric motor. The electric motor of this application, by incorporating the conductive component, creates a complete low-impedance electrical path between the shaft and the conductive component, allowing current that might be input into the electric motor via the rotor hub to be output to the outside of the electric motor, thus improving the electrical protection performance of the electric motor.

This utility model relates to the field of electrical protection and discloses an isolation device for the electrical system of the conventional island and BOP (Balance of Plant) of a nuclear power plant. This device aims to address the safety risks posed by the close proximity and exposed nature of live connection terminals (pile heads) in adjacent outgoing line bays in existing technologies, which can easily lead to accidental electric shock and short circuit damage to equipment when workers operate in specific bays or near secondary terminal blocks. The device mainly includes a base plate, connection terminals for connecting electrical wiring harnesses disposed on the base plate, and an insulating plate. The key innovation lies in the fact that the insulating plate and the base plate are at least partially spaced apart, together forming a space to accommodate the connection terminals. By constructing an insulating barrier around the exposed live connection terminals, an effective physical isolation space is formed. This barrier can reliably prevent workers' fingers, maintenance tools, or other objects from accidentally touching the live terminals during operation, thereby eliminating the significant safety hazard of electric shock and short circuit damage to equipment caused by accidental contact with live pile heads in adjacent bays.

The utility model belongs to the electrical distribution equipment field discloses an intelligent safety distribution box, including the box, the electrical assembly of setting in the inside of box and being divided into different function areas and a set of intelligent monitoring protection system, the structure design of electrical assembly of at least partial area of box adopts the bevel installation and recess in the surface of box, the box is equipped with ventilation and heat dissipation system, including the air intake of being located in the lower part of box, the exhaust fan of being located in the top of box and the rainproof top cover with the air outlet structure, and the intelligent monitoring protection system can monitor voltage, current and the like parameter, realizes remote monitoring, fault diagnosis, early warning and a variety of electrical protection function, including overvoltage, overcurrent overload, electric leakage and surge protection, and supports remote opening and closing. The utility model passes through the combination of structure optimization and intelligent technology, has improved the safety, reliability and operation convenience of distribution box significantly.

The embodiment of the application provides a power plant electrical secondary circuit relay protection safety linkage control method and system, and relates to the technical field of power plant electrical protection. The method first acquires a real-time data set, and obtains an effective data set by performing hierarchical preprocessing on the real-time data set. Then, a relay protection safety linkage judgment model is used to output a state judgment result based on the effective data set. Then, a linkage control strategy is executed according to the state judgment result. Then, a linkage control log is generated by monitoring the execution process of the linkage control strategy, and the relay protection linkage judgment model and the linkage control strategy are dynamically optimized based on the linkage control log. The method adopts a multi-source data acquisition system, cooperates with a double judgment logic of a main criterion and a backup criterion, and improves the accuracy of state identification. The method can also dynamically correct the judgment threshold of the model and the linkage control strategy based on the linkage control log, thereby improving the reliability of the relay protection control.

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.

A fuse and a manufacturing method thereof, the fuse including: a tube body; a fuse element disposed inside the tube body; two inner caps respectively disposed on two ends of the tube body, where two ends of the fuse element respectively welded to the inner caps respectively disposed on the two ends of the tube body; and two external terminals welded to the inner caps. The present disclosure provides the fuse that allows the external terminals and the inner caps to be welded into one piece, thereby reducing impedance caused by an interference-fit assembly method in the prior art, and reducing power consumption of the fuse while ensuring an electrical protection capability.

The application provides an arc suppression device of a power lock, a power supply system and an electric vehicle, and relates to the electrical protection field.The device comprises a lock switch of the power lock and an RC absorption circuit.The RC absorption circuit comprises a resistor and a capacitor.The lock switch comprises a moving contact, a first stationary contact and a second stationary contact.One end of the resistor is electrically connected with the first stationary contact, and the other end of the resistor is electrically connected with one end of the capacitor.The other end of the capacitor is electrically connected with the second stationary contact, and the moving contact is drivingly connected with a lock core of the power lock.The arc suppression device can completely eliminate the arc spark generated when the power lock is turned on and turned off through the RC absorption circuit, can effectively resist the high-frequency vibration of the electric motorcycle and the corrosion of the hot and humid environment, ensures long-term stable operation, and realizes the multiple improvement of performance, reliability and economy through the modular design, which not only simplifies the installation process, but also seamlessly adapts to the existing power lock structure, significantly reduces the production cost and the transformation cost, and realizes the multiple improvement of performance, reliability and economy.

This invention provides an energy-saving intelligent power metering box, relating to the field of electrical protection equipment technology, including a metering box and a low-power anomaly monitoring and wake-up system. The metering box has a fixed support platform on its bottom, an exhaust platform, an explosion-proof plug, and an irregularly shaped door. It houses intelligent protection components (including a positioning platform, a one-way ball joint, a fan, a temperature and humidity sensor, a dehumidifier, a stepper motor, an electric push rod, and a sealing plate). The low-power anomaly monitoring and wake-up system includes monitoring, data processing, and execution control units. The monitoring unit collects temperature, humidity, water level, component electrical parameters, and leakage signals. The data processing unit analyzes parameters to generate indicators, judges the status, and performs correlation checks, comparing the current curve with historical pre-fault curves to generate a wake-up command. The execution unit drives the protective components or keeps non-critical components in sleep mode. This invention avoids moisture accumulation and rainwater intrusion, improves operational safety, and achieves a balance between low power consumption and safety protection.

The application discloses a kind of supercritical foaming material classification inventory management method for electrical protection, belong to material intelligent warehousing technical field, specifically include: first, obtain the antistatic index of the supercritical foaming material to be handled, flame-retardant grade, compressive yield strength and thermal decomposition temperature four basic attribute parameters;Then the parameters are constructed as multidimensional feature tensor, mapped to the preset attribute space coordinate system, according to the coordinate distribution to generate target warehouse classification label, the tensor, label and material storage coordinates are associated and stored in the inventory database;Subsequently, receive target electrical component protection task instruction, extract the demand attribute threshold of antistatic, flame-retardant, compression and thermal stability, generate dimension-matched demand feature tensor and place in the coordinate system;Then calculate the space euclidean distance and the included angle cosine similarity of both;Finally, according to double-threshold comparison, the target multidimensional feature tensor is screened out, the corresponding discharge matching scheduling instruction is generated and sent to the inventory control terminal.

This utility model relates to the field of electrical protection devices, and more particularly to a protective device for containing mechanical electrical equipment. Its technical solution includes: a lid mounted on a housing, the housing and lid being locked together by a locking mechanism; electrical components are installed inside the housing; and a loudspeaker is mounted on the lid. The locking mechanism includes a latch and a latch; the latch is mounted on the lid, and the latch is located on the housing; a limiting frame is provided on the housing outside the latch; a locking block is movably installed within the limiting frame; and the latch is limited by the locking block after engaging with the latch. This utility model utilizes the guiding cooperation between the latch and the latch; when the lid is closed, the locking block retracts, and a spring resets and presses the latch for quick engagement; a sliding guide rod ensures stable movement of the locking block, and double locking enhances vibration resistance; the loudspeaker integrates real-time feedback of equipment status, solving the problems of low locking efficiency, inconvenient maintenance, and limited functionality of traditional devices.

An electrical protection device includes a housing including a plurality of sidewalls. The plurality of sidewalls includes one or more thermochromic sidewalls. The electrical protection device includes a switch assembly located in the housing and an electrical connector extending from the housing. The electrical connector is configured to place the switch assembly in electrical connection with a main bus at an electrical distribution panel. In response to a condition at the electrical protection device causing a temperature of a respective thermochromic sidewall of the one or more thermochromic sidewalls to exceed a temperature threshold, the respective thermochromic sidewall is configured to provide an indication of the condition of the electrical protection device. The indication may be a visual indication including a color change and an expansion of the material. The indication may be an audible indication including emitting a noise.

Magnetic holding system for an electrical protection device. Electrical protection device (100) comprising: - a fixed part including two power terminals (101, 102); - a movable part (120) adapted to come into contact with the fixed part and to move between an open position and a closed position of the electrical protection device, the movable part comprising an upper surface (120a), a lower surface (120b) opposite the fixed part and two contact points (121, 122) with the fixed part located on the lower surface; - two springs (151, 152) configured to apply a pressure force on the two contact points of the movable part in the direction of the fixed part; - a plate (130) placed on the upper surface of the movable part;- two magnetic bars (191, 192), each magnetic bar being placed in a loop (1011, 1022) formed between a contact point of the moving part and a power terminal of the fixed part; - two magnetic cheeks surrounding the moving part, each magnetic cheek being in contact with the two magnetic bars; characterized in that the electrical protection element also comprises a permanent magnet (131) placed above said plate between the two contact points of the moving part and between the two springs. Figure for the abbreviation: Fig. 2;

This utility model relates to the field of electrical protection technology, specifically disclosing a protective cover with anti-accidental contact function, including a first housing and a second housing hinged together and forming a mounting cavity, a combination lock for locking the first housing and the second housing and detachably mounted on the first housing; and a latch on the second housing for use with the combination lock. This utility model effectively solves the problem of accidental contact risk from various buttons, operating handles, switches, valves, meters and other components inside the cabinet.

The utility model relates to ancient building electrical protection technical field especially is an ancient building electrical fire electric arc detection circuit breaker, including detection casing, the side recess is set up in the side surface middle position of detection casing, the side surface rear position sliding connection of detection casing has the slide, the front end upper position fixed connection of slide has the scale board, the side of slide away from detection casing is fixedly connected with side card frame, in the utility model, through setting carbon fibre modified bulkhead, bolt, slide, adjusting card slot, side slot and scale board, will be convenient ancient building electrical fire electric arc detection circuit breaker before using, need to carry out the assembly to multiple detection equipment, the equipment can take scale separation component first, to realize the relative installation with accurate suitable installation spacing, then utilize the carbon fibre modified bulkhead of additional installation to side card frame, insulate the electromagnetic interference that both sides generate when operating, avoid both inconvenient normal detection work to ancient building electrical circuit.

The application provides a power supply detection device based on a multilayer electrical protection circuit and high-voltage isolation design, relates to the technical field of power electronic testing and instrument detection, and comprises a multilayer protection circuit and an electrical isolation barrier. The multilayer protection circuit comprises a first-stage surge discharge unit, a second-stage voltage clamping unit and a third-stage active cutting unit connected in sequence. The first-stage surge discharge unit discharges high-energy transient pulses at an input end to the ground. The second-stage voltage clamping unit limits residual pulse voltage below a preset safety threshold. The third-stage active cutting unit monitors voltage and current parameters in real time and disconnects a signal transmission path when an abnormality occurs. The electrical isolation barrier is arranged between an output end of the multilayer protection circuit and a subsequent processing circuit and comprises a signal isolation module and a power supply isolation module. The application realizes all-round protection against transient pulses to continuous faults, and ensures the safety of personnel and equipment through the electrical isolation barrier.

A device includes a light source configured to emit light as an indication that an electrical protection device has operated. The electrical protection device is configured to operate in response to a fault condition detected on an energized conductor to which the electrical protection device is electrically coupled. The device further includes an optical device coupled to the light source and configured to channel the emitted light from a first end portion of the optical device to a second end portion of the optical device, and a photosensor optically coupled to the second end portion of the optical device and configured to detect the emitted light.

The utility model discloses a circuit breaker relates to electrical protection device technical field, wherein, the circuit breaker static contact forms the bending extension section, and the bending extension section has the overhanging height in the vertical direction, and the static contact point is arranged on the bending extension section, and the electric repulsion between static contact point and dynamic contact point is strengthened, and the dynamic static contact point is accelerated and breaks, and the arc time is shortened to reduce the ablation and energy loss of arc to the contact, the gas cover forms the arc channel, and the gas cover and the bending extension section cooperate and form the sealed chamber to compress the space of arc chamber, and the application of arc extinguishing grid group can further limit short -circuit current and reduce breaking energy, and utilize the gas pressure -maintaining effect and extinguish arc quickly and cool.

This invention relates to the field of DC power distribution protection, and discloses a DC circuit breaker control method, device, and system, comprising: acquiring electrical parameters of a target branch during its operation, wherein a branch DC circuit breaker for controlling the on / off state of the target branch is installed in the target branch; identifying the operating state and confidence level of the target branch based on the electrical parameters; determining electrical protection conditions for the target branch based on the operating state and the confidence level in response to the confidence level being greater than a first threshold; and controlling the operation of the DC circuit breaker based on the comparison result between the electrical parameters and the electrical protection conditions. This invention dynamically determines electrical protection conditions by real-time identification of the operating state and confidence level, avoiding misjudgment of inrush current under a single fixed threshold, achieving adaptive optimization of protection parameters, and enhancing the fault tolerance and reliability of the system.

The application relates to a fuse box, relates to the technical field of electrical protection, and comprises a fuse tube, two oppositely clamped and fixed fixing sleeves, two groups of wiring assemblies for connecting external cables and the fuse tube, installation cavities for inserting the fuse tube are formed in the mutually close end openings of the two fixing sleeves, limiting cavities for installing and placing the wiring assemblies are formed in the mutually far end openings of the two fixing sleeves, and the installation cavities and the limiting cavities are communicated; in the assembling process of the fuse box, the wiring assemblies are connected with the corresponding external cables in advance, the wiring assemblies are fixedly inserted into the limiting cavities in the corresponding fixing sleeves, one end of the fuse tube is then inserted into the installation cavity of one of the fixing sleeves, the inner end of the fuse tube is connected with the wiring assembly in the limiting cavity, and finally, the two fixing sleeves are inserted and fixed; in the process, no additional screws are needed for fastening, so that the assembling efficiency of the fuse box is improved.

An arc flash protection system and method are used to generate a worst-case arc-flash incident energy for downstream electrical equipment based at least on device information obtained for the downstream electrical equipment, constant arc-flash incident energy curves based upon the parameters of the downstream equipment, and the tripping time / current characteristics determined for a primary electrical protective device associated with the downstream electrical equipment. An arc flash label for the downstream electrical equipment is generated based at least on the worst-case arc-flash incident energy generated for the downstream electrical equipment. In a local hosting embodiment, the primary electrical protective device is configured for determining the worst-case arc-flash incident energy for downstream electrical equipment connected thereto. In an external hosting embodiment, an arc flash labeling computer is configured to provide sophisticated outputs in addition to determining the worst-case arc-flash incident energy for downstream electrical equipment connected to a primary electrical protective device.

This application relates to the field of wind load technology for building surfaces, and discloses a wind load pressure sensor, comprising a housing, a mounting base, and an electrical protective cover fixed to the mounting base. A pressure-sensitive element is mounted on the top of the electrical protective cover, and a signal amplification circuit is connected to the bottom of the pressure-sensitive element. A signal wire fixing connector is connected to the bottom of the signal amplification circuit, and the signal wire fixing connector penetrates the outer wall of the electrical protective cover. A waterproof and breathable plug is installed on the opening on the side of the electrical protective cover away from the signal fixing connector. The compact housing design of this application facilitates installation, improves the accuracy of wind pressure data testing, extends service life, and comprehensively protects sensor performance.

The utility model discloses an insulated gate bipolar transistor circuit breaker belongs to electrical protection technical field, including main power part, drive part is connected main power part, current detector is connected main power part, voltage comparator is connected between current detector and main power part, and the positive input of voltage comparator is connected a reference voltage, and the output pin of current detector is connected to the reverse input of voltage comparator. The beneficial effects of above -mentioned technical scheme are: through comparing reference voltage and current detection signal of current detector output, can realize quick overcurrent protection function, improve the security and reliability of equipment operation, and the structure is simple.

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 core disposed inside the tube body; inner caps disposed at both ends of the tube body, the inner caps being electrically connected to the fusible core; and a flexible terminal sleeved outside the inner cap and electrically connected to the inner cap, the flexible terminal being deformable under external force. When the flexible terminal is used to connect cables, it can deform to conform to the cable, thereby improving the connection reliability between the cable and the fuse, reducing the impedance between the cable and the fuse, and preventing abnormal fuse breakage.

This invention discloses an electric tensioner for overhead power lines, comprising a power system, a control system, an actuator, and a safety protection system. The power system includes a drive motor, a reducer, and a transmission mechanism. The actuator includes a tensioning shaft, a tensioning rope, a clamp, and a limiting mechanism. One end of the tensioning shaft is connected to the drive motor, and tension sensors are installed at both ends of the shaft. The safety protection system includes an emergency braking mechanism, an overload protection device, an electrical protection system, and a mechanical protection device. The control system includes a main control unit, a motor control unit, a battery management unit, and a wireless communication unit. The main control unit is connected to the motor control unit, the battery management unit, and the wireless communication unit. The control system connects to the power system and the actuator through the motor control unit. This invention can improve construction efficiency, shorten the construction period, reduce safety risks during operation, achieve precise control of the tensioning process, and ensure the uniformity and stability of the line tension.

The application discloses an electrical protection device for a low-voltage circuit, comprising a protection shell, a double-contact assembly, a contact seat assembly, an arc blowing assembly and an arc extinguisher, in order to solve the technical problem that the general electrical protection device in the prior art has slow arc extinguishing speed, limited breaking capacity, and the contact is easy to be ablated and damaged when frequently breaking the arc, and lacks a mechanism for preventing misoperation after fault tripping, resulting in insufficient safety, the application designs the above-mentioned electrical protection device for a low-voltage circuit, the double-contact assembly is used for realizing isolation protection of the arc and the main contact, the arc blowing assembly and the arc extinguisher are used for accelerating the movement and extinguishing of the arc in a cooperative manner, and the self-locking mechanism is used for preventing misoperation after fault, so that the breaking performance and operation safety of the device are improved, and the stable operation of the low-voltage circuit system is ensured.

The utility model discloses a kind of safety protection devices of plastic injection molding machine, belong to plastic injection molding machine technical field;Including molding machine body, feeding mechanism;The inside one end of molding machine body is equipped with fixed mould, the other end is equipped with the dynamic mould driven by hydraulic rod, the front of molding machine body is equipped with protective door, molding machine body is equipped with the mechanical protection mechanism of fixed dynamic mould position by protective door control, the hydraulic protection mechanism of the hydraulic circuit of interrupting hydraulic press is powered off by electrical protection mechanism of molding machine body, interrupting hydraulic press;By setting mechanical protection mechanism, so that molding machine body when using, open protective door, the position of dynamic mould can be fixed, so that dynamic mould can be mechanically fixed, and then the protection strength of molding machine body is strengthened.