دورات هندسية

 

 

Underground Distribution

النتائج 1 إلى 4 من 4
  1. [1]
    ابوزيد الفهداوي
    ابوزيد الفهداوي غير متواجد حالياً

    عضو فعال

    تاريخ التسجيل: Feb 2007
    المشاركات: 105
    Thumbs Up
    Received: 0
    Given: 0

    Underground Distribution

    السلام عليكم
    اليكم نبذه بسيطه عن توزيع الكابيلات الارضيه
    وشكرا لاطلاعكم


    UNDERGROUND DISTRIBUTION
    As might be expected.the capital investment cost of distributing power through underground circuits is appreciably higher than by overhead circuits.underground circuits have many advantages such as freedom from sleet and icing of conductors ,tree limbs,lightning surges,damage by vehicles, and improved appearance. On the other hand,there are substantial disadvantages in the from of higher investment coast and longer time required for repair.
    · There are many factors that lead to the use of underground systems.Historically the distribution systems in the downtown areas of cities have been the first to go to underground construction.The substation and associated feeder breakers that supply the primary feeders are surface mounted equipments.
    The primary feeder cables are underground circuits that supply the network transformers.The network transformers,network protectors,and low voltage secondary circuits are underground.The network transformers and network protectors,when located in street or sidewalk vaults,are capable of withstanding complete submersion in water.
    The primary switch on the transformer the associated primary feeder circuits and the secondary circuits are also able to withstand submersion.
    · In some locations in some cities,vault are subject to very frequens floodingflooding.Almost invariable vault are designed to withstand .

  2. [2]
    EHV
    EHV غير متواجد حالياً
    عضو شرف


    تاريخ التسجيل: Mar 2005
    المشاركات: 314

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 1
    Given: 0
    جزاك الله خيرا على هذه المعلومة القيمة

    0 Not allowed!



    Nothing is as easy as it looks

  3. [3]
    أبو جلغيف
    أبو جلغيف غير متواجد حالياً
    جديد


    تاريخ التسجيل: Jul 2006
    المشاركات: 8
    Thumbs Up
    Received: 0
    Given: 0
    بارك الله فيك

    0 Not allowed!



  4. [4]
    ابوزيد الفهداوي
    ابوزيد الفهداوي غير متواجد حالياً
    عضو فعال


    تاريخ التسجيل: Feb 2007
    المشاركات: 105
    Thumbs Up
    Received: 0
    Given: 0
    اي راي للنقاش انا مستعد له ولكم كل الشكر والتقدير على اهتمامكم

    0 Not allowed!



  
الكلمات الدلالية لهذا الموضوع

عرض سحابة الكلمة الدلالية

RSS RSS 2.0 XML MAP HTML