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      歡迎來到江蘇春晨電纜有限公司官方網站!

      公司名:
      江蘇春晨電纜有限公司

      聯系人:趙禮春
      電  話:18951262418
                 13770439971
      傳  真:051786844418
      地  址:金湖縣金南鎮幸福路
      Q   Q:843499471
       
      行業資訊

      電機引接線,高壓電機引接線




      電纜的額定電壓應適合于電纜系統的運行狀況,用U0/U
      (Um)kV 表示。
      U0—電纜設計用的導體對地或金屬屏蔽之間的額定工頻電 電機引接線,高壓電機引接線
      壓;
      U—電纜設計用的導體間的額定工頻電壓;
      Um—設備可承受的“最高系統電壓”的最大值。
      The rated voltage of the cable for a given application shall be suitable for
      the operating conditions in the system in which the cable is used,and is
      expressed in the form of U0/U(Um)kV. Where:
      U0—The rated power-frequency voltage between conductor and earth
      or metallic screen,for which the cable designed;
      U—The rated power-frequency voltage between conductors,for which
      the cable disigned;
      Um—The maximum value of the “highest system voltage”for which
      the equipment may be used.注:
      A 類系統—該類系統任何一相導體與地或接地導體接觸時,能 電機引接線,高壓電機引接線
      在1min 內與系統分離;
      B 類系統—該類系統僅包括單相接地故障短路時運行的條件,
      接地故障時間應不超過1h,但在任何情況下,最長不超過8h,
      每年接地故障總持續時間不超過125h;
      C 類系統—不屬于A 類、B 類的系統。
      System category A—This category comprises those systems in which any phase
      conductor that comes in contact with earth or an earth conductor,is disconnected
      from the system 電機引接線,高壓電機引接線
      with in 1 min.
      System category B—This category comprises those system which,under fault
      conditions,are operated for a short time with one phase earthed.This period should
      not exceed 1 h.For a longer period,not exceeding 8 h on any occasion,can be
      tolerated.The total duration of earth faults in any year should not exceed 125 h.
      System category C—
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