2012年4月24日星期二

Way and its interfaces with the dry-type transformers low voltage outlet


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Dry-type transformers because there is no oil, there is no fire, explosion, pollution and other issues, so the electrical specifications, procedu res do not require dry-type transformers placed in a separate room. In particular, the new SC (B) 9 series, the loss and noise down to a new level, more of the same power distribution room to create the conditions for transformers and low voltage screen.
 
    (1) low-voltage standard enclosed bus: engineering wiring if the choice of enclosed bus, the corresponding transformer is available in standard enclosed bus terminal, to facilitate and external busbar connection. With shell products, shell top cover supporting closed bus flange; without shell products, and only closed busbar terminals.
 
    (2) the horizontal side of the low-voltage standard outlet: when placed side by side of the transformer and low voltage distribution panel for convenient connection between its terminals, the transformer can provide a low-pressure horizontal side of the outlet, usually associated with the GGD, GCK, MNS low-voltage screen m atch to sign the Transformer Factory and Switchgear Factory interface with the Minutes, confirm with the interface detailed size to ensure that the on-site installation smooth.
 
    (3) low-voltage standard cubic row side outlet: horizontal side of the outlet, elected domino screen busbar vertical layout of the low voltage distribution panel, the transformer low-voltage Li Pai side outlet.
 
    At present, China\\ s resin insulation dry-type transformers annual output has reached 10000MVA, to become one of the largest dry-type transformers in the world\\ s production and sales. With the popularization and application of low noise, energy saving, SC (B) 9 series, the performance indicators and their manufacturing technology of dry-type transformers in China has reached world advanced level. With the popularization and application of dry-type transformers, manufacturing technology for rapid development, we can predi ct the future of dry-type transformers in the following areas for further development.
 
    (1) energy saving and low noise: With the new low-power silicon steel foil winding structure ladder Core seams, environmental protection requirements, the depth of the noise study, and computer optimized design of new materials, new processes, new technologies, the introduction of , will the future of dry-type transformers are more energy-efficient and quieter.
 
    (2) High reliability: improve product quality and reliability, will be the people\\ s relentless pursuit. In the calculation of electromagnetic field, the wave process, casting process, the hot spot temperature rise, the PD mechanism, quality assurance system, and reliability engineering a lot of basic research, and actively reliability certification to further enhance the reliability and service life of dry-type transformers .
 
    ; (3) environmental characteristics of certification: the European standard HD464, dry-type transformers weather resistance, resistance to environmental and fire-resistant characteristics of the study and certification.
 
    (4) Capacity: 50 ~ 2500kVA distribution transformers based dry-type transformers, power transformers to 10000 ~ 20000kVA/35kV expand the regional urban network substation is more and more in-depth city city electricity load is increasing, load center of the central area, residential area, large factories and mines, the 35kV power supply power transformer of large capacity community center will be widely used.
 
    (5) multi-function combination: from a single transformer, the the Multifunctional transformer with air-cooled to protect the shell temperature of the computer interface, and zero-sequence current transformer, power metering, enclosed bus and the side outlet.
 
    (6) developments in the field: from the main distribution transformer, transformer, excitation transformer to the power station plant, subway traction rectifier transformers, high-current electric furnace transformers, nuclear power plant, marine and oil platforms and other special transformers and multi-purpose field development .

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