176results about How to "Avoid short circuit accidents" patented technology

The invention discloses fluororesin radiating paint and a preparation method thereof. The paint mainly comprises an electron transfer type organic compound, graphene, a carbon nanotube, titanium white, other additives and fluororesin, wherein the fluororesin is a paint brand having the highest comprehensive property at present; the electron transfer type organic compound can greatly enhance the thermal radiation rate of the paint; the graphene and the carbon nanotube can further accelerate thermal conduction; and the electron transfer type organic compound, the carbon nanotube and the graphene finally form a full three-dimensional network distribution of granules (electron transfer type organic compound), wires (carbon nanotube) and planes (graphene) in a fluid. The fluororesin radiating paint disclosed by the invention has high thermal radiation rate, high thermal conductivity and low thermal resistance, can realize radiation cooling, and simultaneously has the effects of self cleaning, acid / alkali resistance and super high insulativity, thereby having high practical value.

The invention discloses a moistureproof type low-smoke halogen-free flame-retarding wire and cable insulation material used for building. The insulation material comprises components, by weight, 100 parts of vinyl copolymer and / or ethylene propylene rubber, 100-250 parts of halogen-free flame retardants, 1-20 parts of compatilizer, 0.3-5 parts of antioxygen, 0.5-5 parts of lubricants, 0-3 parts of coupling reagents, 0-2 parts of dispersing agents, and 2-20 parts of one or more of vinyl silicone oil, silicone, silicone grease, silicone rubber, and mineral oil. Wires made of the material is low in smoke, free of halogen, incapable of releasing poisonous gas. Flames can be retarded due to the fact that a single stick of wire can vertically combust at combusting time. Moreover, some special addition agents are added in materials of insulation layers or protective sleeve layers, so that the surface hydrophobic property of products is increased and can be used in a high-temperature humid environment for a long time, and short circuit accidents caused by moisture absorption of the wire insulation layers are avoided.

The invention discloses a compound insulating tube busbar and a preparation method thereof in the technical field of high voltage insulated conduction. The compound insulating tube busbar comprises a conductor tube, a compound insulating layer, a semiconductor electric strip layer, a shielding layer and a sleeve, wherein, the conductor tube is positioned on the innermost layer; a plurality of the compound insulating layers and the semiconductor electric strip layers are crosswise arranged at the external part of the semiconductor tube; a copper foil layer is arranged at the external part of the semiconductor electric strip layer and the sleeve is arranged at the external part of the copper foil layer. The preparation method of the invention adopts different properties of a solid buddle-free insulating film strip and insulating liquid to enwind and solidify the shaped insulating tube busbar on the surface of the tubular conductor, which causes the production procedure to be simple and the maintenance to be simple and convenient; compared with the prior art, the compound insulating tube busbar has better insulating property and longer service life, and can be applied to bitter environments.

The invention discloses a box-shaped or plate-shaped battery pack. For example, the battery pack includes a box-shaped or plate-shaped battery pack. The battery pack has a hard outer jacket member, a box-shaped or plate-shaped battery element, a cover, and a circuit board. The hard outer jacket member has a first opening and a second opening formed at both ends. The box-shaped or plate-shaped battery element is contained in the outer jacket member and has electrode terminals. The cover is molded from resin and is fitted to the first opening. The circuit board is connected to the electrode terminal leads and contained in the cover. At least the electrode terminal leads extends from the first opening. The cover has concave portions on both ends of one longer side. The outer jacket member has cut portions that expose at least the concave portions of the cover. At least a longer side of the cover and the outer jacket member are heat-adhered.

The invention discloses a waterproof type electric vehicle charge interface. The waterproof type electric vehicle charge interface is characterized in that sleeve grooves are communicated with the right side of the inside of a slot via roller grooves, sleeves are arranged inside the sleeve grooves, support frames are connected with the right sides of the insides of the roller grooves by rotary shafts, rubber rollers are mounted on the left sides of the support frames, a charge connector is mounted on the left side of the inside of the slot, a wire outlet hole is formed in the left side of a shell, a guide cover for sleeving the charge connector is arranged on the left side of the inside of the slot, and rubber sheets are uniformly arranged on the right side of the inside of the slot. The waterproof type electric vehicle charge interface has the advantages that the sleeves can be driven by the rubber rollers to be expanded and contracted, accordingly, the outer side of a charge plug can be overlapped, and rainwater can be prevented from being poured into the slot; the rainwater can be prevented from flowing into the slot with the rubber sheets, and accordingly the waterproof performance of the waterproof type electric vehicle charge interface can be improved; the rainwater can be quickly drained from the waterproof type electric vehicle charge interface by a drain hole, and accordingly short-circuit accidents can be prevented.

Provided is an outdoor charging pile device. The outdoor charging pile device comprises a charging pile body and a charging gun. A cavity is formed in the charging pile body, a mounting groove located over the cavity is further formed in the charging pile body, a driving motor is fixedly arranged in the top wall of the mounting groove, and a rotating shaft is rotatably arranged in the cavity through a rotating bearing; a winding reel is fixedly arranged on the rotating shaft, power-supply wire cables are wound on the periphery of the winding reel, and the power-supply wire cables are fixedly connected with the charging gun; the upper end of the rotating shaft extends upwards into the mounting groove, and is fixedly connected with an output shaft of the driving motor, the portion, in the mounting groove, of the rotating shaft is fixedly provided with rotating wheel gears, and the portion, above the mounting groove, in the charging pile body is provided with a sliding cavity; and a sliding plate is arranged in the sliding cavity in a sliding mode, a threaded shaft is rotatably arranged in the sliding cavity through the rotating bearing, and the threaded shaft is connected with the sliding plate in a threaded fit mode. The outdoor charging pile device is convenient to use, stable in operation, safe and reliable.

The invention discloses a method for manufacturing a high tension coil of a resin pouring dry type coiling iron core transformer. The method comprises the following steps that a circle of glass cloth plate or a circle of PET plate wraps a coil wire wrapping die, the joint of the glass cloth plate or the joint of the PET plate is pasted firmly through silicone adhesive or double faced adhesive tape, and the glass cloth plate or the PET plate is tightly tightened in a sparse wrapping mode through a glass tape; the two ends of the glass cloth plate or the two ends of the PET plate are inserted into grooves of two end plates of a wire wrapping tile die, and gaps between the two end plates and the grooves are filled with glass cement to be sealed; a pre-stained glass fiber grid plate is wrapped in a surrounding mode; an electromagnetic wire winding is wound; an outer die is arranged in a sleeved mode, resin is poured into the outer die, and the outer die, the two end plates of the wire wrapping tile die and the coil wire wrapping die are removed after the resin is solidified and cooled. The method solves the problems that in the process of manufacturing the high tension coil of the resin pouring dry type coiling iron core transformer, demoulding is difficult, the resin leaks easily and the environment is polluted; the dies are easy to manufacture, reliable and convenient to seal, efficient and high in quality; branching lead-out operation is simple, and welding is firm; branching lead wires are not crossed, space is saved, the short circuit is eradicated, and the process is safe and reliable.

The invention relates to a dual-bus disconnecting switch operation blocking electric circuit, which comprises a DC power supply, a first bus disconnecting switch auxiliary circuit and a second bus disconnecting switch auxiliary circuit in parallel connection, and a circuit breaker auxiliary normally-closed contact, wherein the first bus disconnecting switch auxiliary circuit comprises a first bus disconnecting switch electromagnetic lock button switch, a first bus disconnecting switch electromagnetic lock coil and a second bus disconnecting switch auxiliary normally-closed contact in serial connection; and the second bus disconnecting switch auxiliary circuit comprises a second bus disconnecting switch electromagnetic lock button switch, a second bus disconnecting switch electromagnetic lock coil and a first bus disconnecting switch auxiliary normally-closed contact in serial connection. By using the circuit of the invention, the circuit breaker is opened, after the first bus disconnecting switch performs closing operation, the second bus disconnecting switch can not perform the closing operation; after the circuit breaker is opened, the first or the second bus disconnecting switch can only perform closing or opening operation, and thus, maloperation accidents when the disconnecting switch is opened with load or one bus carries out closing or opening with load on the other bus can be avoided.

The invention discloses a safety type bus duct digital system. The safety type bus duct digital system comprises a bus duct, an inserting box, a starting end box, a termination end cover and a bus duct hoisting part, and is characterized in that one end of the bus duct is connected with the starting end box; the other end of the bus duct is fixedly provided with the termination end cover; the topof the bus duct is hoisted at the top of a wall through a bus duct hoisting piece; and the bottom of the bus duct is inserted with the inserting box. The safety type bus duct digital system is high inoverall structural strength, simple and convenient in mounting method, rapid to mount, high in overall structure safety performance, simple in part manufacturing process and low in whole structure production cost.

The invention relates to an adjustable multipurpose three-phase test set and belongs to the field of testing. The adjustable multipurpose three-phase test set comprises a test bar; the front end of the test bar is provided with a left phase contact probe, a middle phase contact probe and a right contact probe; the left, middle and right phase contact probes are correspondingly connected with three signal input ends of a three-phase tester; the three-phase tester is fixed to a handle of the test bar; two sides of a transverse bar at the front end of the test bar are provided with two rotary spring clamps, respectively; the left and right phase contact probes are fixed to the rotary spring clamps on two sides of the transverse bar, respectively; the middle phase contact probe is fixed to the transverse bar at the front end of the test bar through a spring. A measuring mode wherein three-phase measuring points are in contact at the same time is adopted, an operator contacts a live device fewer times, work is less dangerous for testing staff, interphase short circuit is avoided, the test set is suitable for test objects having different interphase distances, work preparation time is shortened, and testing speed can be increased. The test set is widely applicable to the field of three-phase power signal testing for low-voltage power supply systems.

The invention discloses a jacquard needle piece of a warp knitting machine. The jacquard needle piece of the warp knitting machine comprises a jacquard needle bed and a plurality of piezoelectric ceramic needle selecting pieces. The jacquard needle bed comprises a base plate, a needle embedding block and a limiting block, and one piezoelectric ceramic needle selecting piece is embedded in each needle embedding groove in the needle embedding block and one corresponding limiting groove in the limiting block. Each piezoelectric ceramic needle selecting piece comprises a middle substrate, a yarn guide needle and piezoelectric ceramic pieces arranged on the two sides of the middle substrate, each middle substrate is a carbon fiber substrate made of conductive carbon fiber materials, the middle substrate of each piezoelectric ceramic needle selecting piece is electrically connected with the electrodes in the piezoelectric ceramic pieces arranged on the two sides of the middle substrate, the middle substrates of all the piezoelectric ceramic needle selecting pieces are integrally connected through first guide wires to be electrically connected with the negative electrode of a driving power source of the warp knitting machine, and the outer electrodes of the piezoelectric ceramic pieces on the two sides of each middle substrate are respectively and electrically connected with the positive electrode of the driving power of the warp knitting machine through second guide wires. The jacquard needle piece of the warp knitting machine is low in manufacturing cost, high in production efficiency, long in service life, and capable of avoiding the accidents of depoissonization, leakage current and short circuit of the piezoelectric ceramic pieces.

The device includes the evaporative cooling chamber and the condenser. The heating unit in the stator of the generator is dipped in the cooling medium in the evaporative cooling chamber. The condenser located above the cooling chamber is carried out heat exchange with the steam of the cooling medium. The bottom of the condenser through a one-way valve is connected to the upper evaporative space in the cooling chamber. A communicating tube connects between the bottoms of the condenser and the near return liquid tank, and they have same horizontal level. The tank at certain height through the return liquid tube, where a one-way valve and a solenoid valve are installed, is connected to the evaporative space. The water leak meter, the pressure controller and the air escape valve are installedin the condenser. The invention prevents short circuit caused by leaky cooling water from the condenser to the evaporative cooling chamber so as to raise reliability

The invention discloses a fault detection device of an electrified railway switching station, and a method thereof, and relates to the technical field of the electrified railway traction power supply.The fault detection device is arranged at a middle switching station, an output end thereof is connected with control ends and electric control information sending ends of a left neighbor switching station, the middle switching station, and a right neighbor switching station; two sectionalizers are arranged on a contact network of an exit of each of the left neighbor switching station, the middleswitching station and the right switching station, and the sectionalizers are connected through a transition area. The fault can be accurately discovered and isolated in time, the technical problemsthat the new short-circuit is caused by short-circuit of pantograph and the contact network when the train drives into a fault section from the non-fault section and the arcing and burning loss are caused since the train with the load enters a nonelectric area, even if the accident is caused since the contact network is burnout in the prior art can be effectively solved.

Provided is a forced circulation evaporation cooling device of a hydro-generator stator busbar. The stator busbar (12), a condenser (21), a liquid storage tank (30), a cooling device (32), a pump (1), a pressure stabilizing tank (2), a flowmeter (6), a liquid dividing pipe (8), a gas collecting pipe (16), a liquid supply main pipe (3), a gas outlet pipe (18), a liquid return main pipe (27), a total liquid return main pipe (37), a by-pass pipe (4) and an electro-liquid separation joint are connected to form an evaporative cooling circulation loop. An evaporative cooling medium in the loop is driven by a pump. The stator busbar includes one or a plurality of busbar branches, an inlet and an outlet of each busbar branch are respectively connected with the liquid dividing pipe and the gas collecting pipe through the electro-liquid separation joint and an insulation guide pipe, the busbar branches are connected in parallel, and the stator busbar is connected with the pump, the condenser, the cooling device and the like to form the independent evaporative cooling circulation loop. The forced circulation evaporation cooling device enables a plurality of busbars to be combined to form a unified parallel-connection pipeline and builds the independent evaporative cooling circulation loop.

The invention discloses a core structure of a lithium battery and an assembling method of the core structure. The core structure of the lithium battery comprises a positive plate, a negative plate and an isolation membrane, wherein the positive plate and the negative plate are single-face coated plates and are continuously folded to form an E shape, the isolation membrane is continuously folded to form a W-shaped structure, the positive plate and the negative plate are respectively inserted from two sides of the isolating membrane so that the isolating membrane is arranged between positive polarity material layers on the positive plate and negative polarity material layers on the negative plate, the positive polarity material layers are connected with positive tabs or preserved positive tab regions, and the negative polarity material layers are connected with negative tabs and preserved negative tab regions; the positive tabs and the negative tabs or the preserved positive tab regions and the preserved negative tab regions on the positive plate and the negative plate are all arranged at the external end of the whole structure so as to be conveniently connected with external tabs; first insulating material layers or second insulating material layers are further arranged at the turning points of the positive plate and the negative plate to effectively prevent the generation of burrs in folding. The core structure disclosed by the invention has the advantage of a laminated core structure and is free from cutting, a large-power cutting device is omitted, the possibility of generating the burrs can be effectively reduced, and the product quality is improved.

A package for a power storage device includes at least one laminated packaging material 1 having first and second sections. The packaging material includes a metallic foil layer, a heat-resistant resin layer, and a heat-fusible resin layer. In a state in which the heat-fusible resin layers of the first and second sections are faced, peripheral edges thereof are heat-sealed to form a storage chamber 40 for accommodating a device main body. One of the sections is extended outside the storage chamber 40 to form a conductive flange 26, 31 having an exposed heat-fusible resin layer. The conductive flange is provided with an external conductive section in which the heat-fusible resin layer is partially removed to expose the metallic foil layer. The packaging material having the external conductive section 27,32 is provided with an internal conductive section 28,33 in the storage chamber in which the heat-fusible resin layer is partially removed to expose the metallic foil layer.

An insulating heat-resistant enameled wire coating, the enameled wire coating comprises an inner coating coated on the surface of the enameled wire, an intermediate coating located on the inner coating and an outer coating coated on the intermediate coating . By coating the inner coating, intermediate coating and outer coating on the outer surface of the enameled wire, the enameled wire has better insulation and heat resistance performance, and the coating will not be aged or damaged due to heat during use, and short circuit can be avoided. Accident; the enameled wire coated with this coating is especially suitable for high-speed rotating motors, and can keep the rotor running stably for a long time; at the same time, the raw material cost of the coating is low, and it is suitable for large-scale industrial production.

The invention provides a safety charging socket. The safety charging socket comprises a battery and a charging circuit, wherein the charging circuit is electrically connected with the electrode of the battery; the charging circuit comprises a microswitch and a charging contact; the microswitch is arranged between the battery and the charging contact; the microswitch comprises a switch handle; the microswitch has a switch-on state and a switch-off state; when the microswitch is in the switch-on state, the switch handle is pressed by a charger plug, and the contacts on the microswitch are closed; and when the microswitch is in the switch-off state, the charger plug is removed, the switch handle upsprings, and the contacts on the microswitch are separated. The safety charging socket is simple in structure and low in cost; when the charging socket is not in use, the contacts of the charging socket are not electrified, so that the safety of the electric vehicle can be improved; electric shock and short-circuit accidents are effectively avoided; and the normal use of the electric vehicle and the personal safety of a user can be ensured.

The invention discloses a power transmission line online inspection flight monitoring system comprising an inspection command car and an aircraft; the inspection command car moves along a fixed powertransmission line, and controls the aircraft to move in certain assigned area; a remote transmit-receive device, a command operation system, a wireless data video image acquisition system, a generatorand a computer are arranged in the inspection command car; the remote transmit-receive device controls the aircraft to transmit the data gathered in a preset time period to the wireless data acquisition system; the wireless data acquisition system receives the aircraft data and transmits same to the computer. The system uses a redundancy determination mode to determine a power transmission line fault generation position and an aircraft deviation position, and the determination mode is accurate; the system uses field video taking mode to determine fault positions; the video data can be processed by a digital determination mode, and the determination can be done in a direct image contrast mode; the determination modes are more directly.

The present invention relates to a bus insulating bracket with a self-repair function. The insulating bracket is installed at the upper and lower end parts of a busbar groove. The busbar groove comprises a top plate, a side plate and a busbar. Heat radiation fins are manufactured at the side plate. The bus insulating bracket is characterized in that the insulating bracket is a composite insulating bracket, and a rubber spring is inserted in the insulating bracket and is provided with a reinforcing block at the forced part of the busbar. According to the insulating bracket of the bus groove, the rubber spring is inserted in an insulating plastic, the upper, left and right sides of the rubber spring are provided with reinforcing stripes, the deformation of a repair busbar in use can be buffered, at the same time the accuracy of busbar installation can be improved, the short circuit accident generated by the deviation of the busbar is avoided, and the electrical fire caused by electricity leakage can be prevented too.

The invention discloses a high-voltage insulation bus and a coating process. The high-voltage insulation bus comprises a bus body, the bus body is coated with an anticorrosive layer and an insulationlayer, the anticorrosive layer is positioned on the bottom layer of the bus body, the insulation layer is positioned on the outer layer of the bus body, the anticorrosive layer is coated with organicsilicon coatings, and the insulation layer comprises, by weight, 60-75 parts of organic silicon resin, 40-45 parts of polyacrylate rubber, 5-7 parts of titanate coupling agents, 3-4 parts of zirconiumoxide, 20-24 parts of silicon dioxide, 3-7 parts of naphthenic oil, 4-6 parts of calcium stearate, 3-4 parts of alunite, 5-7 parts of vinyl trimethoxysilane, 2-6 parts of alkali-free glass fibers and9-17 parts of ethylene-propylene-diene monomer glue. A coating structure of the bus can effectively decrease electrical short circuit of the bus body, and the insulating property and the anticorrosive property of the bus are greatly improved, so that the service life of the bus is prolonged.

An LED lamp unit comprises a power transmission box and a plug stem; turntables are equally arranged at left, right, front and rear of the upper end of the power transmission box; each turntable is provided with a hook in a divertible manner, an empty chamber is arranged in the power transmission box, a clamping cavity above the empty chamber is also arranged in the power transmission box, a motor is fixedly mounted in the top end of the clamping cavity, a diverting shaft is mounted in the empty chamber in a divertible manner through a diverting bearing, a winding shaft is fixedly mounted on the diverting shaft, a power cord is wound to the outer arc of the winding shaft and is fixedly connected to the plug stem, the upper end of the diverting shaft is extended up into the clamping cavity and is fixedly connected with the motor, the diverting shaft is fixedly fitted with a diverting meshing wheel in the clamping cavity, and a smooth cavity above the clamping cavity is arranged in the power transmission box. The LED lamp unit is convenient to use, can run stably and is good in safety and reliability.

The invention provides a thin type transformer for high-frequency induction heating, which can shorten the distance between induction heating coils. The thin type transformer (1) for high-frequency induction heating is provided with two primary coils (20 and 30) and a secondary coil (40), wherein the primary coils (20 and 30) and the secondary coil (40) are all volute-shaped or ring-shaped conductors and are on the same plane; the secondary coil (40) is arranged at the inner side of the primary coil (20); and the primary coil (30) is arranged at the inner side of the secondary coil (40).

The invention relates to an all-directional planetary ball mill. According to the technical scheme, the all-directional planetary ball mill comprises a rotating frame (1), a transmission motor (9), a planetary transmission mechanism (10), grinding tanks (3) and grinding tank bases (4); the transmission motor (9) drives the planetary transmission mechanism (10) through a belt wheel (2), and the planetary transmission mechanism (10) drives the grinding tanks (3) to rotate through the grinding tank bases (4); the rotating frame (1) is fixed to the planetary transmission mechanism (10), a large gear (5) is installed on a shaft of the rotating frame (1), and a gear motor gear (8) and the large gear (5) are driven through a gear motor (7) to achieve transmission. The all-directional planetary ball mill is characterized by further comprising a via hole slip ring (6), wherein the via hole slip ring comprises a stator (f) and a rotor (g), and a terminal wire of the transmission motor (9) is connected with a stator wire and a rotor wire of the via hole slip ring to achieve electric conduction. The all-directional planetary ball mill can achieve all-directional 360-degree turnover movement and meanwhile has the advantages of being free from maintenance, convenient to assemble, capable of achieving sealing and insulation and high in safety.

The invention discloses a novel power distribution box with convenience in maintenance. The novel power distribution box comprises a power distribution box body. Fixing plates are arranged inside the power distribution box body, an end of each fixing plate is rotationally connected with the inner wall of one side of the power distribution box body by a rotary shaft, the rotary shaft is slidably connected with slide grooves by sliders, the slide grooves are formed in the inner wall of the side of the power distribution box body, heat dissipation holes are formed in the side wall of the other side of the power distribution box body, closing sheets are arranged inside the heat dissipation holes, an end of each closing sheet is connected with a chain by a gear disc in a meshing manner, an end of each gear disc is in transmission connection with a motor by a transmission shaft, and a rainwater sensor is arranged on the top of the power distribution box body. The novel power distribution box has the advantages that the three fixing plates are arranged inside the novel power distribution box, can rotate along the rotary shaft and can outwardly slide along the slide grooves, accordingly, the mounting flexibility of power equipment can be improved, and the novel power distribution box can bring convenience for mounting the power equipment and detaching and maintaining the power equipment in late periods.

The invention discloses a fault detection device and method for electrified railway AT stations, and relates to the technical field of traction power supply for electrified railways. According to thefault detection device, the input end of the fault detection device mounted in the middle AT station of the three AT stations in an electrified railway AT power supply system is connected with the test ends of the left adjacent AT station, the middle AT station and the right adjacent AT station; the output end of the fault detection device mounted in the middle AT station of the three AT stationsin the electrified railway AT power supply system is connected with the control ends and the electric tuning information sending ends of the left adjacent AT station, the middle AT station and the right adjacent AT station; two sectionalizers are arranged on a contact net of an outlet of each of the left adjacent AT station, the middle AT station and the right adjacent AT station; and the sectionalizers are connected through transition regions. The fault detection device and method can effectively solve the technical problems existing in the prior art that a fault cannot be timely and accurately found and isolated, a new short circuit is caused because a pantograph is short-circuited with the contact net when a train is driven into a fault section from a non-fault section, arc discharge and burning loss are caused and even the contact net is burnt out to cause an accident because the train with a load enters a no-power region, and the like.

The invention discloses a battery system with a hybrid cooling device, which comprises a battery charger assembly, a battery assembly, a discharge switch assembly, an air cooling assembly and a watercooling assembly, wherein the battery charger assembly comprises N chargers; the battery assembly comprises N battery modules; the discharge switch assembly comprises N discharge switch slave assemblies and a discharge switch main assembly; the air cooling assembly comprises two first fans and a plurality of second fans; the N battery modules are arranged in two columns, and the two first fans arerespectively arranged on the two ends of a cooling air duct formed via a middle space of the two columns of storage modules; the battery module is formed by stacking the M battery submodules; and a plurality of second fans are arranged on the end surface of one side of the battery submodules opposite to the cooling air duct. The battery system with a hybrid cooling device in the invention can cool the battery system efficiently and quickly, thereby realizing warning of a cooling failure, safety isolation of high and low voltages and high system integration, and improving the safety applicability of the whole system.

The invention discloses an over-temperature protection device of an alternating-current socket. The over-temperature protection device comprises a power plug, a sampling circuit and a controller; at least one thermistor used for detecting temperature of a conducting metal piece in the power plug is arranged inside the power plug; the sampling circuit is used for sampling resistance of the thermistor so as to generate sampling signals; the controller is connected with the sampling circuit and controls a power supply of an alternating-current power circuit connected in the electrical equipment to be disconnected. The over-temperature protection device can have a main electric circuit of the electric equipment disconnected when the power plug or socket is over high in temperature, so that melting deformation of plastic of the socket due to high temperature is avoided, short circuit accidents of the power supply is avoided, and electrical safety is guaranteed. The invention further discloses electric equipment provided with the over-temperature protection device of the alternating-current socket.

The invention belongs to the technical field of power transmission equipment and particularly relates to a jack box capable of being rapidly assembled. The jack box comprises a box body, a plug connector mounted at the top of the box body as well as a micro circuit breaker and a monitoring module which are mounted in the box body, wherein the box body comprises a front plate, a rear plate, a leftside plate and a right side plate, the front plate is fixed on the opening side of the rear plate, fixing plates are symmetrically arranged on the inner wall in the middle of the rear plate, insert panels are arranged between the fixing plates, a riveting nut is arranged on one side of each insert panel, and a micro circuit breaker support frame and a monitoring module support frame are connectedto the other sides of the insert panels respectively; the plug connector is arranged at the top of the rear plate and comprises a left plugin and a right plugin, and a partition board is arranged on one side, adjacent to the right plugin, of the left plugin; and screw hole grooves are formed in four corners of the inner wall of the rear plate, the left side plate and the right side plate are fixedat two ends of the rear plate through self-tapping locking screws, and additional processing of punching holes for mounting of the side plates on two sides is not required. The left plugin and the right plugin are separated by the partition board, and short-circuit accidents caused by a too small interval between a left plugin terminal and a right plugin terminal are avoided.