53results about How to "Strong short circuit resistance" patented technology

The invention relates to a C class non-envelop winding dry type transformer that comprises iron core, high voltage winding and low voltage winding. Its feature is that, the iron core is made up of silicon steel of grain orientation high magnetic diffusivity lab joint together five steps and 45 degree full juncture; the low voltage winding with high capacity is winded from copper foil and there is insulating material that can endure 220 degree centigrade is set between the layers; mica strip that can endure 500 degree centigrade constructs cooling air duct, and the whole winding would form a rigid body after dipping into vacuum pressure lacquer and high temperature solidifying; the high voltage winding is continuous structure and is construct by C class glass fiber covered wire, and there is mica strip that can endure 500 degree centigrade is set between the layers, the whole winding would form a rigid body after several times of dipping into vacuum pressure lacquer and high temperature solidifying. It is low power consumption and high efficiency.

The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.

The invention discloses a 220 kilovolt grade low-voltage winding split on-load voltage-regulating wind power transformer comprising an iron core, a first low-voltage coil, a high-voltage regulating coil, a high-voltage coil and a second low-voltage coil, wherein the iron core, the first low-voltage coil, the high-voltage regulating coil, the high-voltage coil and the second low-voltage coil are sequentially arrayed from inside to outside; the first low-voltage coil and the second low-voltage coil are two branches of a low-voltage split winding; and a grounded shield is arranged in a main insulation gap between the high-voltage coil and the second low-voltage coil arranged at the outside. When applied to a wind power station which transmits power outwards and has an improved wiring mode, the invention can effectively enhance the integral low-voltage ride through capacity of a voltage-raising transmission system of a wind power station and has very high lightning strike resistant capacity.

The invention discloses a direct-current relay capable of resisting short circuit current and extinguishing arc. The direct-current relay comprises two static contact leading-out ends, a straight sheet type movable contact spring and a push rod part, , and further comprises a fixed upper yoke, a follow-up upper yoke and a lower armature. The fixed upper yoke is fixed above the push rod part corresponding to the position between the two movable contacts of the movable contact spring, the follow-up upper yoke is fixed in the push rod part corresponding to the position above the movable contact spring, and the lower armature is fixed on the bottom end surface of the movable contact spring corresponding to the position; the fixed upper yoke, the follow-up upper yoke and the lower armature arerespectively distributed along the width of the movable contact spring, and two magnetic conductive rings are formed on the width of the movable contact spring. The electromagnetic attraction force can be increased, so that the short circuit resistance of the product is greatly improved, and the short circuit resistance current reaches the level of 16 kA.

The invention provides a small-sized transformer. The small-sized transformer comprises an iron core, a winding, a framework, an upper bracket, a lower bracket, a wiring terminal and a protective cover, wherein the winding is wound on the framework, the framework sleeves and is used in cooperation with the iron core, the upper bracket is bent, covers the upper surface of the iron core, and is fixed with screws penetrating the upper bracket forward and backward, the wiring terminal is fixed to the upper bracket through screws on the top surface, wires drawn from the framework are connected to the wiring terminal located on the top, the upper surface of the wiring terminal is also covered with the protective cover, the lower bracket is fixed to the bottom of the iron core through screws, andfixing holes are formed in bending surfaces. The small-sized transformer has the advantages of simple structure, small size, low power consumption, easy heat dissipation and strong short-circuit resistance and is suitable for a wide range of applications.

The invention provides a 10KV oil-immersed transformer. The 10KV oil-immersed transformer comprises an oil tank, an iron core, windings, insulating sleeves and an oil temperature measuring device. Transformer oil for cooling and insulating the windings is arranged in the oil tank. A high-permeability crystal orientation cold rolling silicon sheet is adopted in the iron core. The iron core is a core-type iron core. The windings are each of a multilayer cylinder type structure. The oil tank is provided with a conservator for storing and replenishing oil for the oil tank. The conservator is a capsule type conservator. The oil temperature measuring device is arranged at the top of the oil tank. The oil tank is provided with a pressure relief valve. The side wall of the oil tank is a corrugated wall. Dust is sprayed to the surface of the oil tank, and a film is painted to the surface of the oil tank so that an outer protective layer can be formed. The 10KV oil-immersed transformer is low in cost, easy to maintain, good in heat dissipation, high in overload capacity and wide in adaptive environment. It is guaranteed that oil does not need to be replaced when the oil-immersed transformer normally runs, the maintenance cost of the transformer is greatly reduced, and meanwhile the service life of the transformer is prolonged.

The invention relates to a low-voltage welding transformer and an operation method thereof. The low-voltage welding transformer comprises two groups of transformer winding components which are the same in structure, and each transformer winding component comprises an iron core, a primary winding and a secondary winding, wherein each primary winding and the corresponding secondary winding are arranged outside the corresponding iron core; primary windings in the two groups of transformer winding components are in series connection, and each primary winding is coupled with the corresponding secondary winding in the transformer windings; two circuits of output ends are led out of two secondary windings; the two circuits of output ends led out of the two secondary windings respectively are connected correspondingly, so that the series connection output or parallel connection output of the two secondary windings is formed.

The invention discloses a membrane-packaged rectangular stranded conductor and a manufacture method. The method comprises the following steps: 1) membrane-packaged conductors are formed by packaging single circular aluminum wire with polyester film; 2) a plurality of film-packaged conductors are stranded together and shaped into rectangular sectional planes, wherein, the conductors leastways comprise two layers of many circular aluminum wires, and the length of each conductor is basically equal to resistance; 3) the stranded conductors with rectangular sectional planes are impregnated with a thermoplastic resin adhesive groove so that thermoplastic resin adhesive is full filled with apertures among each single circular aluminum wire and all the single circular aluminum wires are adhered together; 4) insulation materials are full packaged outside of the stranded conductors with rectangular sectional planes, wherein, the stranded conductors are impregnated with the thermoplastic resin adhesive groove, so that the resin adhesive is packaged; and 5) polyester non-woven fabric is selectively laid outside of the full packaged insulation materials, and the apertures among each single circular aluminum wire are filled with thermoplastic resin adhesive and solidified by baking after coiling reactor winding.

The invention discloses an iron winding core for a shell transformer and a manufacturing method. The iron core has rectangular iron winding cores, and the number of the iron winding cores is two; the two iron winding cores are bond together by using a binding belt and cured by using epoxy resin, and staggered windings are sleeved on the periphery of the binding belt; and a notch is formed above the binding belt on the two rectangular iron winding cores respectively, and the two notches are distributed symmetrically. The iron winding core for the shell transformer has the advantages of good maintainability, low reluctance, great reduction of no-load loss and extremely low noise; the iron winding core is mechanically wound so as to save the labor force and improve the production efficiency; the iron winding core is integral, so the iron winding core is easy to fix and wedge; and the iron winding core has high space factor and saves materials.

This invention relates to a 220kv single-phase railway traction transformer structure composed of an iron core, a high voltage coil and a low voltage coil, in which, the voltage of the head and tail of the high voltage coil is 220kv connecting to 220kv network directly, both of the head and tail apply the interleaved equal turn winding, other line segments are in continuous winding, the outlet of the tapping is set vertically to the 1 / 2 part of the high voltage coil.

The invention discloses an arc extinguishing and short circuit current resisting direct-current relay, which comprises two static contact leading-out ends, a straight sheet type movable contact spring, a push rod component and three pieces of magnetic steel. Two of the three pieces of magnetic steel are respectively arranged at the outer sides of two sides of the width of the movable contact spring and are positioned at the position corresponding to one movable and static contact, and the magnetic poles of one surfaces of the two pieces of magnetic steel, which face the movable and static contact, are set to be the same; the other piece in the three pieces of magnetic steel is arranged on the outer side of one side of the length of the movable contact spring and is positioned at the position corresponding to the other movable and static contact; and the pole surface of the other piece of magnetic steel is approximately vertical to the pole surfaces of the two pieces of magnetic steel,so that the Lorentz force generated by the movable contact spring in an arc extinguishing magnetic field formed by the three pieces of magnetic steel is approximately zero. The defect that the short circuit current resisting capability of the product is reduced due to an arc extinguishing magnetic field can be eliminated.

The invention discloses an intelligent dry-type transformer and production process thereof. The intelligent dry-type transformer comprises bases, transformers and an upper rack, wherein a cushion block, a draught fan, bidirectional wheels and grounding screws are arranged on the bases, the transformers are fixedly connected to the cushion block, high-voltage connection pieces, high-voltage connection rods, high-voltage taps and high-voltage connection pipes are arranged on side surfaces of the transformers, each transformer internally comprises a cooling air duct, a high-voltage coil, a low-voltage coil and an iron core, upper ends of the transformers are fixedly connected with the upper rack, and a clamping piece, high-voltage terminals, hanging rings and low-voltage outgoing line copper plates are arranged on the upper rack. The intelligent dry-type transformer has favorable performance such as fire resistance, does not contain flammable resin, also does not contain toxic gas, and also has the characteristics of flame retardance and self extinguishing; and the intelligent dry-type transformer has the advantages of low energy consumption, low noise, no pollution, no maintenance, good insulation property, no local discharge, high lightning impulse resistant capability, high mechanical strength, temperature change resistance, high short-circuit resistant capability and humidity resistance, and can run under high humidity.

The invention discloses a dry-type transformer. The dry-type transformer comprises a suspension ring, a clamping element, an upper cushion block, a high-voltage connection rod, a fan, a foot pad, a cooling fin, a temperature controller, a high-voltage connection sheet, an insulation shell, a lower cushion block, a high-voltage tap, a low-voltage outgoing copper medal and a high-voltage terminal, wherein the suspension ring is arranged above the clamping element, the upper cushion block is arranged above the insulation shell, the high-voltage connection rod is connected with the cooling fin, the fan is arranged above the foot pad, the cooling fin is arranged inside the insulation shell, the temperature controller is connected with the clamping element, the high-voltage connection sheet is arranged outside the insulation shell, the lower cushion block is arranged below the insulation shell, the high-voltage tap is connected with the high-voltage connection sheet, the low-voltage outgoing copper medal is connected with the clamping element, and the high-voltage terminal is arranged outside the insulation shell. The dry-type transformer has the advantages of high cooling performance, no maintenance, no pollution, high short-circuit resistant capability and high heat resistant capability, and is convenient to install.

The invention provides a composite amorphous transformer core. Three individual rectangular core frames are arranged; each core frame is formed by compounding two materials, namely an amorphous alloy and oriented silicon steel in an overlapping manner; three rectangular cores are butted to form a three-dimensional triangular structure; the structure is three-phase symmetrical; three-phase magnetic circuits are equal and the shortest; a transformer is excellent in performance, low in noise and high in anti-short-circuit ability; the core is compact in structure; the transformer is small in size and light in weight; and the weight of the core is only about 2 / 3 that of an amorphous core with a conventional structure, so that the product cost can be greatly reduced.

The invention relates to short-circuit-resisting transformer coils. The short-circuit-resisting transformer coils comprise low-voltage coils, main hollow channel insulating part and high-voltage coils; the short-circuit-resisting transformer coils are characterized by further comprising a first insulating band for banding the last several layers of windings of the low-voltage coils, and the first several layers of windings of the main hollow channel insulating part and the high-voltage coils into one body. Meanwhile, the invention also discloses a preparation method for the short-circuit-resisting transformer coils. By adoption of the structure, the main hollow channel insulating distance is effectively controlled, and the main hollow channel insulating distance is not changed too much caused by the short circuit of the transformer, so that the overall firmness of the transform coils is strengthened, and the short-circuit-resisting capability of the transformer is enhanced; compared with the existing technological process, the technological process in the preparation method provided by the invention is not changed too much; however, the preparation method is simple and effective; the cost of the manufactured transformer is similar to that in the prior art, so that the transformer coils can be produced in a large-scale manner; and the short-circuit-resisting capability of the manufactured transformer is obviously better than that of a similar transformer in the prior art, therefore, the market competitiveness of the transformer coils is improved to a certain degree.

The invention relates to a photoelectric transmission isolation power supply. The photoelectric transmission isolation power supply comprises a transmitting end unit, a light path straightener and a receiving end unit. The transmitting end unit is used for obtaining a power signal from an external power supply and converting the power signal into an optical signal. The optical path straightener isused for straightening optical signals and transmitting the straightened optical signals. And the receiving end unit is used for receiving the straightened optical signal, converting the optical signal into an electric signal and providing for a load. The transmitting end unit comprises an isolation transformer, a light-emitting source and an AC / DC light-emitting power management circuit which isused for carrying out AC / DC conversion and managing the light-emitting efficiency of the light-emitting source. The optical path collimator comprises a collimating mirror. The receiving end unit comprises a photoelectric converter and a DC / AC or DC / DC load management circuit used for carrying out DC-AC conversion or DC conversion and managing loads. The receiving end unit further comprises a communication module used for feeding back the working condition of the load to the input module. Light serves as an energy transmission medium, the transmission distance is long, the insulation withstandvoltage stress is high, and the advantages of being high in short-circuit resistance, safe and reliable in operation and the like are achieved.

The embodiment of the invention provides a 110kV three-phase dry-type transformer, and the 110kV three-phase dry-type transformer comprises three connected single-phase dry-type transformers, whereineach single-phase transformer comprises a wire inlet side high-voltage coil and a wire outlet side high-voltage coil; the wire inlet side high-voltage coil is provided with a wire inlet end and a wireoutlet end, and the wire outlet side high-voltage coil is provided with a wire inlet end and a wire outlet end; the wire outlet end of the wire inlet side high-voltage coil is connected with the wireinlet end of the wire outlet side high-voltage coil, and the wire inlet side high-voltage coil is in series connection with the wire outlet side high-voltage coil. According to the invention, the wire inlet ends are arranged at the middles of the high-voltage coils at all sides, so the lightning impulse voltage resistance of the wire inlet ends of the high-voltage coils at all sides is improved,the lightning impulse voltage resistance of the whole three-phase dry type transformer is further improved, and the requirement for the voltage resistance of insulation of the three-phase dry type transformer under the 110kV voltage level is met.

The invention relates to an anti-short-circuit transformer coil. The anti-short-circuit transformer coil comprises a low-voltage coil and a main hollow channel insulating part and a high-voltage coil from inside to outside in sequence; the anti-short-circuit transformer coil is characterized in that a reinforcing material is arranged between at least one adjacent interlayer of the last several layers of windings of the low-voltage coil; and the outer surface of the main hollow channel insulating part and the exterior of the first winding layer are coated with a first curing material layer and a second curing material layer respectively, and are banded tightly by a first reinforced insulating material band and a second reinforced insulating material band respectively. Meanwhile, the invention also discloses a preparation method for the anti-short-circuit transformer coil; by adoption of the structure, the main hollow channel insulating distance is effectively controlled, and a condition that the main hollow channel is enlarged when a transformer is in short circuit caused by compactness of the coil windings can be avoided, so that the overall stability of the transformer coil is improved, and the anti-short-circuit capability of the transformer is improved; the preparation method is simple and efficient, and the preparation cost is close to that in the prior art, so that the large-scale production of the anti-short-circuit transformer coil can be performed conveniently; and furthermore, the anti-short-circuit capability of the transformer employing the coil is obviously better than that of the similar transformers, so that the market competitiveness of the product is reinforced to a certain degree.

An energy-saving environment-protection low-noise complete equipment comprises a base, a temperature controller, a device body insulation assembly and an iron core assembly; the device body insulation assembly is installed on the base, and the iron core assembly is installed in the device body insulation assembly; high-voltage coil windings and low-voltage coil windings are successively disposed at positions of three vertex angles of an iron core structure from inside to outside; two sides of the top of the iron core assembly are respectively provided with three uniformly distributed high-voltage wiring end, and the adjacent high-voltage winding ends are electrically connected through high-voltage leads; and the bottom edge of the top of the iron core assembly is provided with two groups of low-voltage wiring ends, and the two groups of the low-voltage wiring ends are electrically connected through a low-voltage lead. The energy-saving environment-protection low-noise complete equipment is advantageous in that third harmonic does not be generated, the electricity-saving effect is obvious; the complete equipment has the advantages of low heating, the good heat-radiation condition, the high insulation heat endurance class, good safety and high reliability; single-layer and multi-layer circular appearance molding can be configured in actual installation according to actual needs, and the complete equipment has the advantages of elegant appearance and the small occupied land; and the waterproof capability and bad natural weather resistance capability are high.

A dry type transformer belongs to electrical equipment and comprises a tank body, tank doors, an iron core and a coil. The cross section of the iron core is in an oval shape, the coil is in a foil wound type, the coil is in an oval shape matched with the iron core, cross reinforcing ribs are arranged on the inner side of the tank door, approach switches corresponding to the two tank doors are respectively arranged on a door frame at the top end of the tank body, the two approach switches are in parallel connection, and the two approach switches are both connected with an alarm. The iron core and the coil are changed into oval shapes form rectangular shapes, so that materials and cost are saved. The coil is changed into the foil wound shape from a wound type, so that the coil is strong in short circuit resistance, reliable in work and convenient to process. The tank doors are good in rigidity. When the tank doors are opened in an operation process of the transformer, the alarm can give out alarm. Thus, the safety is greatly improved.

The invention discloses an electric reactor coil of a multi-section structure, belongs to a common component of a transformer or an inductor, and particularly relates to a coil structure applied to dry type and oil immersed series reactors. The electric reactor coil of the multi-section structure comprises coil bodies wound on an iron core, and is characterized in that each continuously wound coil body is uniformly divided into at least two coil sections, wherein each coil section is formed by at least three coil layers through continuous winding. The structure can effectively reduce voltage among lower layers, improves local electric discharge phenomena, and has good short-circuit prevention capacity. The insulation structure of the coil can reduce the dimension of the coil in the width direction, shortens the size and the weight of an electric reactor, and saves raw materials.

The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.

The invention relates to a novel transformer. Structural advantages of an existing shell-type transformer and an existing core-type transformer are integrated, so a shell-type transformer and a core-type transformer can be completely replaced. The cost is greatly reduced, and the percent of pass of sudden short circuit tests is theoretically 100%. A transformer winding is good in cooling effect, high in overload capacity, large in limit capacity and convenient to transport, and the limit capacity is superior to that of a shell type transformer. When vertical transportation is inconvenient, thetransformer body can be transported horizontally, and the transportation height is reduced. The capacitor is compact in structure, small in appearance size, light in overall weight, uniform in capacitor distribution, reliable in insulation and high in lightning stroke resistance and operation overvoltage resistance, and leads are convenient to install.

The invention discloses a 35KV novel shell type power transformer body structure which is composed of main components of clamping wood, insulators, windings, a fastening device, an upper frame, iron core skids, iron cores, a lower frame and the like. The iron cores are fixed between the upper frame and the lower frame, the insulators and the windings are combined as required by the technical requirement and installed on the lower frame, and the clamping wood is fixed between all phases of insulators and windings. The insulators are of a triangular structure, and the windings are of a cake type structure. The 35KV novel shell type power transformer body structure has the advantages that due to combination of the insulators, the windings, the frames and the iron cores, on the basis of the principle of electricity and magnetism, the problems that a shell type power transformer is high in cost and a performance index can not be met are solved, and the 35KV novel shell type power transformer body structure has the advantages of being low in cost, low in losses, little in short-circuit impedance, safe, reliable and strong in short-circuit-resistant capacity.

The invention discloses a motor type high-voltage direct-current relay. The motor type high-voltage direct-current relay comprises a casing, wherein a movable contact assembly, a stationary contact assembly and a drive assembly are arranged in the casing; the movable contact assembly comprises a movable contact spring which is fixed with the upper end of a push rod, and a rack is fixed at the lower end of the push rod; the drive assembly comprises a motor, an output shaft of the motor is in linkage with the rack through a worm, and the axis of the worm is parallel to the axis of the push rod.

The invention relates to a novel distribution transformer, which combines the structural advantages of the existing shell-type transformers and core-type transformers and can completely replace the existing distribution transformers. The cost is greatly reduced, and the passing rate of burst short circuit test is basically 100%. The windings of the transformer have a good cooling effect and strongoverload capability. The transformer has large limit capacity and is convenient to transport. The advantage in ultimate capacity is superior to that of the shell-type transformer. When vertical transportation is inconvenient, the transformer can be inverted for transformation to reduce the height of transportation. The transformer has the advantages of compact structure, small size, low overall weight, compact structure, easy lead installation, uniform capacitance distribution, reliable insulation, and strong lightning resistance and switching overvoltage capability.

The invention relates to a winding for a transformer. The winding is mainly applied to a centrifugal transformer arranged in a shell type and winding staggered type. Compared with a spiral winding, the spiral plate-type winding has the advantages of high mechanical strength, high short-circuit resistant capability, good cooling effect, high overload capability and compact structure, the filling coefficient in an iron core window is improved, and a lead is convenient to install.

The invention discloses a novel distribution transformer. Structural advantages of an existing shell-type transformer and an existing core-type transformer are integrated, so an existing distributiontransformer can be completely replaced. The cost is greatly reduced, and the percent of pass of sudden short circuit tests is basically 100%. The transformer winding is good in cooling effect, high inoverload capacity, large in limit capacity and convenient to transport. The limit capacity is superior to that of a shell type. When vertical transportation is inconvenient, inverted transportation can be achieved, and the transportation height is reduced. The distribution transformer is compact in structure, small in appearance size, light in overall weight, uniform in capacitor distribution, reliable in insulation and high in lightning stroke resistance and operation overvoltage resistance, and leads are convenient to install.

The invention relates to a 500kV radial split transformer. The 500kV radial split transformer is provided with an oil tank main body, a high-voltage sleeve, a low-voltage sleeve, an oil storage cabinet, a heat sink, an on-load tap switch and a high-voltage outgoing line box, wherein the oil tank main body is formed from an upper section of oil tank and a lower section of oil tank, an arrangement structure of iron cores, a voltage stabilization coil, a low-voltage coil I, a high adjustable coil, a high-voltage coil and a low-voltage coil II are arranged in a transformer body, the iron cores are arranged in the upper section of oil tank and the lower section of oil tank, the voltage stabilization coil, the low-voltage coil I, the high adjustable coil, the high-voltage coil and the low-voltage coil II sleeve each iron core, a high-voltage neutral point is used for adjusting a voltage, an external winding radially gets out, the other windings get out of an upper end part and a lower end part, and meanwhile, a high-voltage end is connected with a tail end of the high-voltage sleeve through a copper weaving line. By the 500kV radial split transformer, the problem of relatively large split coefficient can be solved, the product is relatively simple in structure, high in short-circuit resistant capability and safe and reliable in performance, and long-term qualified running can be fully ensured.