10 results about "Lead structure" patented technology

This utility model relates to a low-voltage lead structure, specifically disclosing a low-voltage lead structure that can reduce the additional losses of a three-dimensional wound core transformer. It includes an a-phase low-voltage coil, a b-phase low-voltage coil, and a c-phase low-voltage coil. The starting terminals of each phase low-voltage coil are connected to the corresponding phase terminals via copper busbars. The ending terminals of each phase low-voltage coil are interconnected via copper busbars and connected to the 0-phase terminal. The phase terminals are arranged sequentially on the same side of the transformer where two phase low-voltage coils are located. The starting and ending copper busbars of the other phase low-voltage coil, located away from the plane containing the aforementioned terminals, are partially overlapped. This utility model features a simple lead busbar structure with minimal overall bending, meeting transformer performance requirements and offering high manufacturing efficiency. It is suitable for low-voltage lead structures in three-dimensional wound core transformers.

The utility model relates to transformer technical field, concretely is a kind of three-dimensional volume iron core transformer lead structure, including a phase coil, b phase coil and c phase coil, a phase coil, b phase coil and c phase coil three are equilateral triangle setting, and in the process of coil winding, it is wound more 1 / 3 turns to a phase coil, b, c phase coil is wound less 1 / 3 turns, the upper left corner of b phase coil is equipped with b phase head row, and the upper right corner is equipped with b phase tail row, the upper left corner of c phase coil is equipped with c phase tail row, and lower part is equipped with c phase head row, the lower part of a phase coil is equipped with a phase head row, and the upper right corner is equipped with a phase tail row, the included angle between all head, tail is 120 °, box cover is provided above coil, and 0 phase horizontal row is provided between a phase coil and c phase coil, the utility model can be connected by the arrangement and lead of low voltage bushing, without increasing lead copper bar section, secondly, the resistance of a, b, c phase coil can be kept basically consistent.

The utility model provides a N pole external wire structure of leakage circuit breaker. Mainly solve the current leakage circuit breaker's conductive plate and current transformer wire do not isolate the problem. Its characterized in be further including conductive plate (7), with second wire (12) between the connection of conductive sheet, one end is used for external wire, baffle (6) is detachably installed in the shell, the upper end surface of baffle is equipped with the wire slot (61) for the first wire passing, and the wire board is located below the baffle. The utility model provides a N pole external wire structure of leakage circuit breaker, and the wire of external conductive plate and current transformer is separated through baffle, and use is safer.

The utility model relates to a kind of lead structure for reducing oil-immersed station low voltage DC resistance unbalance rate, including a-phase lead wire, b-phase lead wire, c-phase lead wire and 0 line, the c-phase lead wire is sequentially provided with lead wire resistance Rcc', coil DC resistance Rc'z, lead wire resistance Rz0', the b-phase lead wire is sequentially provided with lead wire resistance Rbb', coil DC resistance Rb'y, lead wire resistance Ry0', the a-phase lead wire is sequentially provided with lead wire resistance Raa', coil DC resistance Ra'x, lead wire resistance Rx0', the 0 line is provided with lead wire resistance R0'0, the lead wire resistance Rz0', lead wire resistance Ry0', lead wire resistance Rx0' are connected with the lead wire resistance R0'0.The utility model reduces DC resistance unbalance rate, reduces the copper row consumption, reduces cost.

The application provides a 35kV transformer, a low-voltage lead structure of a short-circuit-resistant electric reactor, comprising: a wiring copper bar, a zero-phase copper bar and a lead insulation part; the zero-phase copper bar is located below the wiring copper bar, the lead insulation part is arranged between the wiring copper bar and the zero-phase copper bar and is used for connecting the wiring copper bar and the zero-phase copper bar; the lead insulation part is provided with two insulators; the wiring copper bar comprises: an a-phase copper bar, a b-phase copper bar and a c-phase copper bar, and the zero-phase copper bar is detachably connected with the a-phase copper bar, the b-phase copper bar and the c-phase copper bar through the insulators. The wiring copper bar and the zero-phase copper bar are fixed through the double insulators, the stability of the low-voltage winding and the core is enhanced, the creepage distance is increased through the double insulators, the risk of electrical breakdown is reduced, when one of the insulators fails, the other insulator can still support the conductor, the system is prevented from being completely disabled, the short-circuit-resistant requirement is achieved, the phase bar is bent and formed into an outlet, welding is avoided, and the reliability is high.

The utility model belongs to the technical field of bed mat, concretely relates to air bag bed mat of safe wiring, and the heating lead structure of existing air bag bed mat is not reasonable, the utility model adopts the following technical scheme: air bag bed mat of safe wiring includes: inner cover, including upper cavity, lower cavity and intermediate partition layer, the intermediate partition layer divides the inner cover into upper containing space and lower containing space, and the line hole is set up on the intermediate partition layer, heating element is located in the inner top surface of upper cavity, controller is located in the lower containing space, heating lead connects heating element and controller, heating lead includes the first section of being located in heating element and the inner top surface edge of upper cavity, the third section of being located in the inner side of upper cavity and the fourth section of being located in the lower surface of intermediate partition layer, and the edge of intermediate partition layer and the lower surface of partition layer are equipped with wire binding part, the utility model has the advantages of: the lead is along the inner cover wiring and is limited and is neat through wire binding part, avoids or reduces the displacement of lead in use.

The utility model relates to an enameled wire production equipment field, and specifically is an enameled wire take -up control system, including support frame, be equipped with a plurality of lead structure on the support frame, every lead structure all includes the hanger mechanism of setting on the support frame, the hanger mechanism includes the hanger frame, every hanger frame all is connected with swing mechanism, the swing mechanism includes the swing lever of rotation connection on the hanger frame, swing lever is rotationally connected with the wire wheel, swing lever is connected with motor control unit, and the motor control unit can control the rotating speed of enameled wire take -up reel motor, the utility model discloses through the cooperation of motor control unit and swing mechanism, can according to the tension of enameled wire automatic regulation take -up reel motor's rotating speed, guarantees that enameled wire always keeps suitable tension in the take -up process, avoids the slack of enameled wire take -up.

This invention relates to the field of chip packaging technology and discloses a ceramic cavity packaging structure and its preparation method. It includes a heat sink, a chip, a ceramic frame, and a lead structure. The heat sink is bonded to the ceramic frame with adhesive and fixed by structural clamping at both ends. Due to the low CTE of ceramic (approximately 7.5 ppm / K), the ceramic frame can exert a pulling effect on the heat sink, reducing its CTE and effectively improving the CTE mismatch problem after the chip is bonded to the heat sink, thus improving device reliability. The ceramic frame of this structure can clamp the heat sink at both ends and in the same plane as the heat sink, effectively enhancing the CTE reduction effect. Simultaneously, the bolt holes at both ends are directly provided by the ceramic frame, and the ceramic bolt holes do not require electroplating to achieve good corrosion resistance, reducing the processing difficulty and material and plating costs in the heat sink production process, effectively reducing the cost of the heat sink.

The application provides a low-voltage lead structure of a 10kV grounding transformer, comprising: a phase row, a zero row and a lead insulator; the phase row and the zero row are connected through the lead insulator; wherein the phase row comprises an a-phase phase row, a b-phase phase row and a c-phase phase row, the lead insulator comprises a first lead insulator and a second lead insulator, and the a-phase phase row, the b-phase phase row and the c-phase phase row are connected with the zero row through the first lead insulator and the second lead insulator respectively. By adopting two lead insulators to connect the phase row and the zero row of the low-voltage lead, the mechanical strength of the low-voltage lead of the grounding transformer is effectively enhanced in the case of short circuit, the additional dynamic load generated by vibration is reduced, and the short circuit resistance is greatly improved.