女人天堂AV在线

  • <code id="zbquw"><small id="zbquw"></small></code>
    <code id="zbquw"><nobr id="zbquw"><sub id="zbquw"></sub></nobr></code>
  • <th id="zbquw"><option id="zbquw"></option></th>
    <center id="zbquw"></center>
    <center id="zbquw"><em id="zbquw"></em></center>
  • <th id="zbquw"><option id="zbquw"></option></th>
  • <th id="zbquw"><option id="zbquw"></option></th><center id="zbquw"><small id="zbquw"><track id="zbquw"></track></small></center><object id="zbquw"></object>

    Yuanfang Optoelectronics: Annual production of 1500 sets of LED photoelectric testing equipment projects as planned

    Yuanfang Optoelectronics (300306), Secretary-General Zhang Jie said at the 2012 annual performance briefing held at Panorama Network on February 22nd that in 2012, the company actively promoted the construction of fundraising projects, with an annual output of 1,500 sets of LED photoelectric testing equipment expansion projects and R&D center construction. The project is progressing as planned and is currently in the construction phase of the main building of the building. There is no slowdown.

    Yuanfang Optoelectronics is the world's only listed company in the field of LED and lighting inspection equipment. The company is located in Hangzhou Binjiang National High-tech Development Zone, which is known as a€?Paradise Silicon Valleya€?. The company has the world's largest high-end customer base of LED and lighting products, and its products are exported to developed countries and regions such as the United States, Japan and Europe.

    Power cables are cables used to transmit and distribute electrical energy. Power cables are commonly used in urban underground power grids, power station outlet lines, internal power supply for industrial and mining enterprises, and power lines under river water.

    In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the backbone of power systems, including various voltage levels from 1-500KV and above, and various insulated power cables.

    The use of power cables has been around for more than a hundred years. In 1879, the American inventor T.A. Edison wrapped jute around a copper rod and put it into the iron pipe, and then filled the asphalt mixture to make a cable. He laid the cable in New York and created underground power transmission. The following year, the British Karende invented the asphalt impregnated paper insulated Power Cable. In 1889, the British S.Z. Ferranti laid a 10 kV oil-impregnated paper insulated cable between London and Dartford. In 1908, the UK built a 20 kV cable network. Power cables are becoming more widely used. In 1911, Germany laid a 60 kV high-voltage cable and began the development of high-voltage cables. In 1913, the German M. Hoichstedt developed a phase Shielded Cable, which improved the electric field distribution inside the cable and eliminated the tangential stress of the insulating surface, which became a milestone in the development of power cables. In 1952, Sweden laid a 380 kV ultra-High Voltage Cable in the northern power plant to realize the application of ultra-high voltage cable. By the 1980s, 1100 kV and 1200 kV UHV power cables were made.
    basic structure

    The basic structure of the power cable consists of a core (conductor), an insulating layer, a shielding layer and a protective layer.

    Folding core

    The core is the conductive part of the power cable that is used to carry electrical energy and is the main part of the power cable.

    Folding insulation

    The insulating layer electrically isolates the core from the earth and the cores of different phases to ensure electrical energy transmission, and is an indispensable component of the power cable structure.

    Folding shield

    Power cables of 15KV and above generally have a conductor shield and an insulating shield.

    Folding protective layer

    The role of the protective layer is to protect the power cable from external impurities and moisture, and to prevent external forces from directly damaging the power cable.


    Power Cable

    Power Cable,Computer Power Cable,Power Supply Cables,Ac Power Cable

    Jiangsu QiSheng Cable Co., Ltd. , https://www.shuaihe-cable.com

    女人天堂AV在线

  • <code id="zbquw"><small id="zbquw"></small></code>
    <code id="zbquw"><nobr id="zbquw"><sub id="zbquw"></sub></nobr></code>
  • <th id="zbquw"><option id="zbquw"></option></th>
    <center id="zbquw"></center>
    <center id="zbquw"><em id="zbquw"></em></center>
  • <th id="zbquw"><option id="zbquw"></option></th>
  • <th id="zbquw"><option id="zbquw"></option></th><center id="zbquw"><small id="zbquw"><track id="zbquw"></track></small></center><object id="zbquw"></object>