18results about How to "Guaranteed insulation distance" patented technology

The invention belongs to the technical field of electrical equipment, and discloses a designing and manufacturing method of a twisted busbar and the twisted busbar. The designing and manufacturing method of the twisted busbar comprises the following steps: respectively selecting a point O1 and a point O2 on a first mounting surface and a second mounting surface; selecting a point P1 and a point A on a first plane parallel to the first mounting surface, selecting a point P2 and a point B on a second plane parallel to the second mounting surface, enabling a straight line O1P1 and a plane P1AB to be perpendicular to the first mounting surface, and enabling a straight line O2P2 and a plane P2AB to be perpendicular to the second mounting surface; the point P1, the point A, the point B and the point P2 form a connecting line, the included angle theta between the plane P1AB and the plane P2AB is a twisting angle, and a twisted busbar mathematical model is designed; and processing and manufacturing the twisted busbar according to the twisted busbar digital analog. The twisted busbar manufactured through the method is free of material waste, small in occupied space and easy to machine and manufacture.

The invention discloses a new energy complete device capable of being modularly assembled and a monitoring method, and belongs to the technical field of new energy. The energy complete equipment comprises a transformer, a high-voltage cabinet, a low-voltage cabinet and a box transformer substation which can be modularly assembled; the transformer, the high-voltage cabinet and the low-voltage cabinet are arranged in a delta shape; a partition plate is arranged in the box transformer, a low-voltage chamber is arranged on one side of the partition plate, a high-voltage chamber is arranged on the other side of the partition plate, a high-voltage cabinet is arranged in the high-voltage chamber, and a low-voltage cabinet is arranged in the low-voltage chamber. The low-voltage cabinet comprises a main cabinet and an auxiliary cabinet, a frame circuit breaker is arranged in the main cabinet, the frame circuit breaker is arranged in the middle of the upper side of the main cabinet and plays a weight balancing role, a molded case circuit breaker is arranged in the auxiliary cabinet, and the molded case circuit breaker is transversely arranged in the auxiliary cabinet; different schemes can be selected according to clients and different altitude requirements, modularization is beneficial to long-distance transportation and transportation in complex terrains, and the problem that prefabricated production and selective application cannot be achieved when engineering performance is emergency is solved.

The present invention discloses a single-resistance symmetrical transition circuit and voltage regulation method for an on-load tap changer. The transition circuit includes: a first main contact, a second main contact, a main vacuum contact, a first auxiliary vacuum contact, a second auxiliary vacuum contact, a first isolating switch, a second isolating switch, a conversion switch and a transition resistor. There are two auxiliary switch elements in the transition circuit, which take turns to interrupt the inter-pole circulating current during the on-load switching process. The switching process is symmetrical, and the two auxiliary switch elements have the same task of interrupting the current, which reduces the switching loss of the auxiliary switch elements and can balance the switching capacity of the main switch elements and the auxiliary switch elements. Only one transition resistor is used in the transition circuit, which is convenient for design and installation and ensures the insulation distance. Two isolating switches are designed, which can not only play an electrical isolation role, but also serve as a protection switch for the auxiliary switch elements to prevent the failure of the auxiliary switch elements to interrupt the current after failure.

The utility model discloses a new energy box transformer m type busbar structure, especially be applicable to large capacity wind power box type substation low voltage unit, it includes A phase copper bar, B phase copper bar, C phase copper bar, A phase hangs and connects cable row, B phase hangs and connects cable row, C phase hangs and connects cable row, horizontal insulator, vertical insulator, and each phase copper bar includes the export copper bar I of upper and lower settings, export copper bar II, export copper bar III, and export copper bar I, export copper bar II, export copper bar III are connected with insulator fixed beam through horizontal insulator, wherein export copper bar I, export copper bar II, export copper bar III are arranged at interval after the lower end of bending, and constitute m shape from the side angle, and the arrangement of this kind of structure can greatly reduce the use amount of copper bar and auxiliary material, reduce the fixed point required by busbar etc. while reducing product cost, save the installation space, and reduce the cost.

According to the wiring mode of the three-phase integrated on-load switch for the autotransformer, a low-voltage coil, a high-voltage coil and a voltage regulating coil are sequentially arranged in the transformer from inside to outside, and three coil sets are arranged in the voltage regulating coil in a connected mode through voltage regulating wires. The side surface of the outer side of the voltage regulating coil is fixedly provided with an on-load switch, the on-load switch is a three-phase integrated switch, the on-load switch is respectively connected with each coil group through a lead wire, the voltage regulating coil is connected with a lightning arrester through two cables, and the lightning arrester is connected with the voltage regulating coil. And each group of voltage regulating coils is connected with a lightning arrester through a lightning protection guide, so that a three-phase integrated on-load switch voltage regulating mode is adopted, the size of the transformer is reduced, the cost is reduced, the production efficiency is improved, the error rate in the production process is reduced, the production and the installation are convenient, and the production efficiency is improved. And the problems of low production efficiency, increased cost and the like caused by the on-load tap changer of the oil-immersed autotransformer can be effectively solved.

The invention provides an electric tool. An electric power tool (1) is provided with a motor (4), an output unit (5), a fan (46), a housing (2), a brush holding member (67), and a non-conductive cover member (105), the housing (2) housing the motor (4) and the output unit (5) and having an air inlet (44) that sucks in external air as the fan (46) rotates and an air outlet (47) that discharges the suctioned air, and the motor (4) is disposed in the middle of an air flow flowing between the air inlet (44) and the air outlet (47); the brush holding member (67) is disposed on the downstream side of the intake port (44) and has a brush (76) and a conductive biasing member (77) that biases the brush (76) toward the commutator (15). The cover member (105) is disposed between the biasing member (77) and the intake port (44), and covers the biasing member (77). Therefore, the insulation distance between the air inlet and the force application component can be ensured, and the motor and the electric brush can be efficiently cooled.

The utility model relates to the field of voltage withstanding tests, in particular to a GIS bent neck voltage withstanding tool. The cable comprises a sleeve assembly, a bent neck assembly and a conductor. The sleeve assembly is obliquely distributed and comprises a conductive tube, a first grading ring, a sleeve sleeving the peripheral side of the conductive tube, two groups of connecting assemblies electrically connected to the top end and the bottom end of the conductive tube respectively, and a wiring terminal connected with the sleeve, the first grading ring and the connecting assembly at the top end of the conductive tube; the bent-neck assembly comprises a bent-tube-shaped bent-neck shell of which the top end is connected with the bottom end of the sleeve, an insulating assembly connected to the bottom end of the bent-neck shell, a voltage-sharing assembly connected to the insulating assembly, a bent-neck conductor of which the bottom end is connected to the upper part of the insulating assembly, and a first contact seat connected between the top end of the bent-neck conductor and the connecting assembly at the bottom end of the conductive tube. According to the utility model, the direction of the sleeve can be rotated on site, obstacles are avoided, resources and time are saved, and voltage withstanding work of the interval and the cable head can be realized by only replacing the conductor at the lower part.

The utility model belongs to the technical field of power equipment, and discloses a fixing structure of a mutual inductor and a transformer. The fixing structure of the mutual inductor specifically comprises a supporting plate, a limiting piece, a side plate and a fixing plate. The number of the limiting pieces is multiple, and every two limiting pieces are oppositely and vertically arranged on the supporting plate. The side plates are arranged on the two opposite sides of the limiting pieces, one end of each side plate is connected with the supporting plate, the side plates, the supporting plate and every two limiting pieces define a mounting cavity used for containing a mutual inductor, and the end, opposite to the supporting plate, of each side plate is provided with a connecting part; the fixing plate is connected with the connecting part and seals a cavity opening of the mounting cavity. By means of the fixing structure of the mutual inductor, economical efficiency can be effectively improved, meanwhile, the influence of the internal insulation distance is reduced, and safety is improved.

A low-voltage coil lead clamp comprises an insulation clamping plate, a plurality of fixed insulators and a plurality of clamping bolt assemblies, the two ends of each fixed insulator are connected with the insulation clamping plate, and the clamping bolt assemblies penetrate through the fixed insulators and the insulation clamping plate; and the lead is placed between the fixed insulator and the insulating clamping plate. The clamping bolt assembly comprises a screw rod, a first nut and a second nut; one end of the screw is connected with the first nut and the other end is connected with the second nut. The low-voltage coil lead clamp provided by the utility model can ensure that the low-voltage lead does not deform under the condition of larger repulsive force, the insulation distance between the leads is ensured, and the operation safety coefficient is improved.

First umbrella skirts, second umbrella skirts and third umbrella skirts are horizontally arranged on the periphery of a body of the pantograph insulator, the first umbrella skirts are arranged on the upper portion and the lower portion of the body, and the multiple second umbrella skirts are arranged between the first umbrella skirts arranged on the upper portion and the lower portion. The third umbrella skirts are arranged between the adjacent first umbrella skirts and second umbrella skirts or between the adjacent second umbrella skirts, the body, the first umbrella skirts and the second umbrella skirts are in an elliptical cone shape, long axes of the body, the first umbrella skirts and the second umbrella skirts are arranged in the advancing direction of a vehicle, short axes of the body, the first umbrella skirts and the second umbrella skirts are arranged in the width direction of the vehicle, and the third umbrella skirts are in a fan shape. The first umbrella skirts are symmetrically arranged on the two sides of the body in the width direction, and the projection gt of the first umbrella skirts on the radial plane of the body; the projection gt of the second umbrella skirt on the radial plane of the body; and the projection of the third umbrella skirt on the radial plane of the body. A rainwater path and an electrode discharge path are separated, and the insulation performance of the insulator is guaranteed.

The invention relates to the electrical field, and discloses a high-voltage coil structure of a high-voltage dry-type transformer and a winding method, the high-voltage coil structure comprises a copper conductor for manufacturing a coil, and a connector is led out from the winding tail end of the coil; the copper conductor is divided into an E1 section, an F1 section, a G1 section and an H1 section, the upper half part of the coil is divided into an F1 section coil and an E1 section coil from the middle section to the outer end, the lead end of the F1 section coil starts from the first layer of the middle position of the E1 section and the F1 section in the copper conductor, the lower half part of the coil is divided into a G1 section coil and an H1 section coil from the middle section to the outer end, and the lead end of the G1 section coil starts from the first layer of the middle position of the G1 section and the H1 section in the copper conductor; the number of layers of the E1-segment coil, the F1-segment coil, the G1-segment coil and the H1-segment coil is the same, the G1-segment coil and the F1-segment coil are symmetrical, and the E1-segment coil and the H1-segment coil are symmetrical; compared with a coil wound by a traditional pyramid structure, the high-voltage coil wound in a multi-section mode is smaller in size, the number of consumed copper materials and silicon steel sheets is reduced, and the cost for manufacturing the dry-type transformer is reduced.

In a battery module according to one embodiment of the present invention, performance degradation due to an electrical phenomenon is prevented by providing a larger insulation distance between a cell assembly and a frame by means of structural characteristics of an insulation portion, and prevents damage to the cell assembly due to spatter occurring during the process of welding the frame, thereby improving the yield of the battery module.

The utility model relates to a vehicle pre-charging resistor, including resistor core body, shell, insulating sheet and fixed filler, resistor core body includes ceramic body, resistance wire, pin and support, resistor core body is placed in the shell, the shell is equipped with support body, insulating sheet is installed between resistor core body and shell, there are two pin, and the fixed filler is fixed filler. One end is respectively connected with two ends of the ceramic body, and the other end extends out of the shell; one ends of the two brackets are respectively connected with two ends of the ceramic body, and the other ends are connected with the supporting body; and the gap in the shell is filled with the fixed filler. Compared with the prior art, according to the utility model, through the split type pins, the lead-out pins not only can meet the size and position requirements, but also can meet the requirements of different installation directions and welding sizes, thereby facilitating the welding of a PCB (Printed Circuit Board) or a Busbar; the lead-out pin and the fixed pin are connected through welding, so that the reliability of electrical connection is met; the insulation clamp can ensure the insulation distance so as to meet the requirement of high voltage resistance.

The utility model discloses a low-voltage foil winding winding transformer body assembly which comprises an iron core and a winding and further comprises a zero-phase copper bar, a zero-phase flexible connecting piece, three sets of head leading-out copper bars, three sets of three-phase flexible connecting pieces and three sets of tail leading-out copper bars. The head leading-out copper bar comprises a first vertical section of which the lower end is embedded into the winding and a first horizontal section which is vertically connected with the upper end of the first vertical section; and the upper part of the first vertical section is clamped between the clamping piece and the iron yoke. The tail leading-out copper bar comprises a second vertical section of which the lower end is embedded into the winding and a second horizontal section which is vertically connected with the upper end of the second vertical section, each second horizontal section is connected with a third horizontal section of the zero-phase copper bar through a bolt, and the third vertical section of the zero-phase copper bar is connected with the lower end of the zero-phase flexible connecting piece through a bolt. According to the utility model, the leading-out copper bar is only bent at one position, so that the processing difficulty is reduced, the bending error is reduced, and meanwhile, the advantages of convenient and reliable connection and the like are achieved.

The present invention provides a transformer voltage regulating lead structure based on a vacuum switch, comprising a column I, a column II, a vacuum switch, and a first voltage regulating coil and a second voltage regulating coil respectively arranged on the column I and the column II, wherein the upper and lower ends of the first voltage regulating coil and the second voltage regulating coil are respectively connected to the vacuum switch by connecting a voltage regulating lead. Compared with the prior art, the present invention can meet the switch carrying current, has a suitable insulation distance and a reasonable insulation margin, and has a small volume structure, thereby reducing production and transportation costs.

The invention discloses a high-insulation small-sized snap-on electromagnetic relay, comprising a coil frame, a coil lead pin, an iron core and a static spring part; the coil frame has a winding shaft for winding enameled wire, and the iron core comprises a core shaft and a pole surface arranged at the upper end of the core shaft; the core shaft of the iron core fits in the central hole of the winding shaft of the coil frame, the coil lead pin is installed on one side of the lower flange of the coil frame corresponding to the width of the coil frame, and the static spring part is inserted on the other side of the upper and lower flanges of the coil frame corresponding to the width of the coil frame; the winding shaft is offset. After adopting this structure, the spacing between the coil and the static spring can be increased without increasing the volume of the product, so as to increase the creepage distance between the coil and the static spring, effectively improve the pressure resistance of the product, and have the characteristics of reducing the difficulty of production, reducing the process, reducing the production cost, and facilitating the realization of assembly automation and product miniaturization.

The present invention discloses a current transformer insulation wrapping shaping jig, which belongs to the technical field of current transformers, and is characterized in that it comprises a horizontal workbench; the upper surface of the horizontal workbench is provided with: a primary terminal fixing seat for fixing the primary terminal; the primary terminal fixing seat is provided with a plurality of bolt holes in the horizontal direction; a positioning column for positioning the primary copper strip; the positioning columns are four, and the four positioning columns form a rectangular frame; a central primary fixing platform for fixing the primary long neck portion; the central primary fixing platform is located between the primary terminal fixing seat and the positioning column. By adopting the above technical scheme, the current transformer insulation wrapping shaping jig can be used for wrapping and shaping during the insulation wrapping and transportation stages, and fixed at key positions of the wire wrap frame. The positioning column can be plugged and unplugged at any time according to needs during the insulation wrapping stage, and the shaping is performed after the wrapping is completed to ensure the insulation distance and the symmetry of the overall wire wrap.

A semiconductor device (100) comprises a semiconductor element (1), a first lead frame (2), a second lead frame (3), a heat conducting component (8), and a sealing component (9) for sealing the components. The first lead frame comprises: a first portion (2a) exposed from a first side surface (9A) of the sealing component; a second portion (2b) arranged closer to the lower surface side than the first portion in a second direction (Z) intersecting a lower surface (9C) of the sealing component; and a third portion (2c) connecting the first portion and the second portion and inclined relative to each of the first portion and the second portion. The second lead frame comprises: a fourth portion (3a) exposed from a second side surface (9B) of the sealing component; and a fifth portion (3b) arranged at a distance from the second portion. The semiconductor element is mounted on the upper surface of the second portion. The semiconductor device further comprises: an intermediate frame (4) arranged between the second portion and the fifth portion at least in the second direction and carrying an element constituting a part of a wiring circuit including the first and second lead frames. A distance (L1) between the second portion and the intermediate frame in the first direction (X) is shorter than a distance (h1) between an upper surface of the first portion and an upper surface of the second portion in the second direction.