Traction Rectifier Dry type Transformer
Traction rectifier dry type transformer, high efficiency, low loss, specially designed for harsh environments. Durable and sturdy, with stable output, it helps rail transit move forward quickly.
Product Description:
Technological innovation:
Performance characteristics:
The iron core is made of imported high magnetic conductivity and high-quality grain oriented cold-rolled silicon steel sheets, with 45 degree fully oblique step joints. It adopts a special square tube pull plate structure, and the core column is tied with insulation tape; The surface is coated with special resin to prevent moisture and rust, effectively reducing no-load losses, no-load currents, and iron core noise.
The high-voltage winding conductor is made of copper wire with F-class insulation, reinforced with long and short cut glass fiber felt as filler, and poured with epoxy resin mixture under vacuum (1-3 mbar). Effectively suppress the occurrence of partial discharge phenomenon, with a partial discharge amount not exceeding 5PC.
The low-voltage coil is made of high-quality foil conductors wound on an automatic foil winding machine, with argon arc protection welding and high welding accuracy; Pre impregnated DMD is used as interlayer insulation, and pre impregnated glass fiber cloth is used for insulation inside and outside. The upper and lower ends are sealed with epoxy resin and then cured as a whole in a curing oven, with good moisture resistance.
IP20 can prevent solids with a diameter greater than 12mm from entering and resist accidental impacts; In addition to the functions of IP20, IP23 can also prevent water droplets from flowing in within a 60 degree angle to the vertical line, making it suitable for outdoor installation and use; Customizable.
The overheat protection device mainly achieves transformer temperature detection and control through PT thermistor embedded in the low-voltage coil. During the operation of the transformer, the circulating display shows the temperature values of the three-phase windings; Display the temperature value of the hotter phase winding; Temperature alarm tripping; Sound and light warning, fan start; Fan overload protection and computer interface.
Product Introduction:
Technical parameter table:
Product advantages:
From the initial two-dimensional electric field simulation, three-dimensional electric field measurement, and impulse characteristic measurement, to the later theoretical analysis and simulation tests on the characteristics of the transformer's main insulation, longitudinal insulation, end insulation, lead insulation, and coil under lightning impulse voltage, after years and multiple methods of verification, the reliability of transformer insulation has been ensured.
We specialize in the calculation and measurement of transformer leakage magnetic field, the shielding structure of leakage magnetic field, the calculation of transformer dynamic and thermal stability, and the improvement of transformer dynamic and thermal stability capabilities, in order to ensure the calculation of leakage inductance field and reduce stray losses, and improve transformer dynamic stability.
Our company has collaborated with universities such as Tsinghua University, Beijing University of Science and Technology, and Huazhong University of Science and Technology to jointly develop a calculation program for the temperature field of the coil. By calculating the loss distribution of the coil (including resistance loss, eddy current loss in different directions, and circulating current loss between parallel wires) and the cooling condition of the flow velocity field, we can accurately calculate the temperature distribution of the coil and the temperature rise of the hot spot, so as to take measures to effectively control the temperature rise of the hot spot that affects the life of the transformer.
The electric field strength of each part has been analyzed and strictly controlled during the design phase. The compliance of manufacturing quality, reliability of processing methods, and rationality of operation technology also effectively control the local discharge of transformer alarms.
Execution standards:
Advanced production technology ensures the reliability of products:
The transformer body adopts a high-temperature resistant mixed insulation system, which effectively solves the problem of temperature field differences in different types of transformer structures and ensures the safety and reliability of the insulation system.
Made of high-quality conductor winding and reinforced with long and short cut glass fiber felt, it is poured under vacuum using the world-class Heinrich vacuum casting system
The robot is fully automatic in laminating, adopting a fully inclined 45 degree 7-step ladder joint structure, which improves the efficiency and quality of transformer laminating.
All products strictly control the production process and quality links, and undergo strict testing and inspection according to national standards and customer customized requirements before leaving the factory, including partial discharge inspection, lightning impact resistance inspection, noise inspection and other necessary inspection items. Advanced testing equipment and a comprehensive inspection and testing system ensure the high quality and excellence of the products.
Ordering Notice:
