1.compact structure 2. low losses 3.low noise and superior performance
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110KV, the 35kV 9-type, 11 type product digestion and absorption of Hitachi, Siemens, Alstom, ABB, and many other advanced technologies, and to improve the level of product technology, improve product reliability and social benefits for the goal, the introduction of a new generation of replacement products. And in March 1998 by the former State Ministry of Power, Ministry of Machinery, jointly organized identification, appraisal committee: product development is successful, with good economic and social benefits, a new generation of energy-efficient replacement products. Its structural features are outlined below.1. Core:1.1 high-quality cold-rolled silicon steel sheet: 30Z140.For multi-stage round 1.2 6300kVA, 8000kVA and above iron yoke type "D" type, the minimum level piece widened to increase the iron yoke and clamp contact area to improve the state of the iron yoke clamping It may also reduce the angle of re- reduce the load loss.1.3 increase in clamp strength, up and down the folder with side beam to form a sturdy frame structure, an increase of core
2.shocks:1.4 lamination method using multi-level seams to reduce the load loss and no-load current.Two coils and the body of:2.1 high tension coil tangle continuous combination of wire wound or internal display continuous; high pressure regulator and the pressure regulator coil are independent cake winding, compression process performance, the integrity of the body of a very strong, with a higher than good balance of ampere-turns and short circuit ability, the technology in the country belong to the forefront.2.2 vertical insulation: coil segment capacitance compensation structure, the distribution of the impact of wave processes and composite field strength calculation by computer, and make it more scientific and reasonable to the main insulation. A high degree of scientific and technological content.2.3 increase in the coil mechanical strength, increase resistance to sudden short-circuit capacity.- All coils are wound in a special cardboard tube, to increase the mechanical strength of the coil.- Within the coil support to strengthen and improve the stability of the coil, to prevent instability, deformation.- Insulation pad density treatment.- Pressure dry coil, coil compaction force, to reduce the contraction of the operation. Improve the body of reliability.- Improved the plate structure. The entire insulation plate to strengthen the end of compression.- The body of the "six to the rigid positioning the upper and lower clamping device, ensure that withstand transport" 3g "the impact.2.4 cooling coil structure, 110kV using site-oriented flow of oil separator, the 35kV increase vertical oil passages, a significant reduction in copper oil temperature difference, the coil inside the hot spot temperature rise significantly lower.3.fuel tank and accessories3.1 8000kVA and above the fuel tank, Bell flat roof design full vacuum strength. 6300kVA and below the barrel.3.2 rigid seal structure, flange machining, flange screw with blind hole, and the anti-oil temperature is better, 1J-8 rubber pads to ensure the seal is no oil leakage.3.3 full vacuum oiling process.110kV-35kV performance parameters, see Appendix: load loss is a standard benchmark, the no-load loss is far less than the standard value can be seen from the table. Which the 6300kVA more than 35 ~ 110kV products. The no-load loss of the S11 Standard. This is a very significant economic benefits for the user.
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110KV power transformer
