手机看片AⅤ永久免费,99久色图精品国产,国产精品日韩欧美在线,岛国高清免费不卡顿a,久久久这里只有精品加勒比,久久最新精品视频国产,在线无码免费观看

Products & Services
  • Power quality class

  • Automation protection

  • Intelligent monitoring class

  • Overvoltage protection

  • Neutral grounding class

  • Power supply

  • IEC61850 protocol converter

  • SMREAP microcomputer type arc protection system

    Views:

    1.Product Overview

    The factory/distribution medium voltage switchgear is the power supply hub for the auxiliary equipment/power supply system of the whole plant. In the event of an internal fault, the ability to quickly remove the fault is critical to the safe operation of the plant/distribution system. However, according to the current protection scheme, there are several problems:

    1) The medium voltage busbar is not equipped with any special protection; it is taken care of by the relevant backup protection of the incoming switch;

    2) The protection of the incoming line switch and the outgoing line switch need to cooperate with each other: the difference of the general quick-break protection delay is at least 300ms, or even 500ms;

    3) The over-current protection is up to 1 – 2 seconds.

    Therefore, any faults that occur on the medium voltage busbar of the plant/distribution system must be delayed at least. In other words, the protection of the existing factory medium voltage busbars in the first time can be a blank. However, with a little attention, it is not difficult to find that none of the many electrical equipment upstream or downstream of the medium voltage switch busbar is equipped with fast protection. In contrast, we may not have a good reason to explain that the safety reliability of medium voltage busbars should be slackened. In view of the important position of the medium voltage busbar, the delayed removal of any fault is a situation we are extremely reluctant to see. Because of various faults in the switchgear, the arc generated by the short-circuit current and its high temperature make the gas in the cabinet expand rapidly, which can reach the peak in a very short time, which seriously endangers the safety of people and equipment.

    2.product features

    1) The entire set of action trips exits quickly;

    2) Using overcurrent and arc as the criterion, the action is reliable;

    3) Continuous comprehensive self-test function;

    4) Flexible programming according to various types of wiring;

    5) Easy and flexible installation.

    Back To Top
    Copyright ? Bao Ding Shi Simaier Electric Co., Ltd. All Rights Reserved  
    1. 
      

        1. <menu id="hhb45"></menu>
          1. 手机看片AⅤ永久免费,99久色图精品国产,国产精品日韩欧美在线,岛国高清免费不卡顿a,久久久这里只有精品加勒比,久久最新精品视频国产,在线无码免费观看 岛国三级片在线观看 久久免手续费性爱片 高清无码在线观看网址大全 综合亚洲无线码另类mp4 成人无码男男gv在线观看网站 免费毛片在线看片免费 亚洲欧美五码中文字幕