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          35-220KV 接地箱系列
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          直接接地箱

          Cable sheath earthing protection box

          • JDX-Z
          產品應用:
             
           電纜護層保護接地箱適用于35kV-220kV高壓電力電纜系統,可保護電纜的外護層絕緣免受過電壓的損害。該產品內部主要采用電纜護層保護器,產品整體結構簡潔、密封可靠,產品內部導體為銅排連接,產品外殼為不銹鋼材料焊接,絕緣件經防潮處理,導體連接件全部鍍錫,并采用螺栓壓接,安裝簡單,便于預防性試驗時電纜金屬護層與保護器之間脫開。保護接地箱可安裝于戶外及預埋地下運行,不受各種異常氣候的影響。
              Suitable for 35kV-220kV high voltage power cable system, can protect high voltage cable outer sheath insulation from overvoltage damage. Adopt cable sheath protector, the integral structure of the product is simple, reliable sealing, product internal conductor is copper bar connection, shell is welding by stainless steel materials, insulation parts with moistureproof processing, conductor fittings all tin plating, and adopt the bolt pressure welding, installation is simple, easy to disconnect between cable metal protecting laye and protector when preventive test.Protective earthing box can be installed at outdoor running, not affected by all kinds of abnormal climate。

          工作原理:
              
          該產品的核心部件為電纜護層保護器,保護器由非線性優良的氧化鋅電阻片組成。在正常工作狀態時,電阻片為高阻值,而當過電壓波侵入時,電阻片是低阻,即使流過很大的電流,保護器兩端電壓值仍被限制在允許范圍內,從而有效地保護了電纜外護層絕緣,使其免受過電壓的損傷。
              
          The core components of this product is cable sheath protector, protector is composed of zinc oxide nonlinear resistance slice. In the normal working state, resistance is high resistance, when the voltage wave invasion, resistance is low resistance. even when large current flows, protection voltage value is limited in the allowable range, so as to effectively protect the cable outer sheath insulation, make it from the damage of overvoltage。



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