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      1. HY5WD電機用

        更新:2013/9/26 12:41:24      點擊:
        • 產品品牌   
        • 產品型號   HY5WD
        • 產品描述

          HY5WD電機用,是上海人民電氣有限公司 http://www.mauscontracting.com 為您提供的關于HY5WD電機用型號,HY5WD電機用價格,有關HY5WD電機用的相關資料,上海人民電氣有限公司...

        產品介紹
        避雷器是電力系統(tǒng)各類電氣設備(變壓器、電抗器、發(fā)電機、電動機、PT、CT、斷路器、接觸器等)絕緣配合的基礎,由避雷器的保護性能確定電力系統(tǒng)所有電氣設備的內外絕緣指標(短時工頻耐壓、雷電沖擊耐壓和操作沖擊耐壓等)。
        ??? 金屬氧化物避雷器是20世紀八十年代由美、日等國開始在國際上普及推廣的新一代避雷器,是常規(guī)避雷器中最先進的產品。我國八十年代中期全面引進該項技術后,通過多年實踐消化,目前各專業(yè)避雷器廠產品性能與美、日、西歐等國的最先進產品差距并不大,真正達到了國際全部要求的產品也可以滿足國際IEC標準的全部要求。

        ??? 該產品的核心工作元件采用以氧化鋅為主的多元素金屬氧化物粉末燒制,具有優(yōu)異的非線性伏-安特性,陡波響應快,通流容量大。有間隙產品采用自吹間隙,帶均壓照射結構,降低了放電的分散性,沖擊系數小。
        ??? 復合絕緣外套的采用,順應了國際電力產品小型化、安全化、免維護的發(fā)展趨勢。高分子有機復合材料與傳統(tǒng)的陶瓷和玻璃等無機材料相比,具有體積小、重量輕、耐污穢免清掃、防爆防震動的優(yōu)點。是集成化、模塊化的中高壓輸變電成套設備中首選的防雷元件。
        用途及執(zhí)行標準:
        ????本產品使用于交流220kV及以下發(fā)電、輸電、變電、配電系統(tǒng),用于將雷電和系統(tǒng)內部操作過壓電的幅值限制到規(guī)定的水平,是整個系統(tǒng)絕緣配合的基礎設備。同時,本產品不能用于限制諧振過電壓,系統(tǒng)消諧需要采用其它方式。
        ??? 本產品型號按JB/T8459-1996《避雷器產品型號編制方法》規(guī)定進行編制,無間隙產品執(zhí)行GB11032-2000《交流無間隙金屬氧化物避雷器》標準;有間隙產品執(zhí)行JB/T9672-2005《有串聯間隙金屬氧化物避雷器》標準。對以上標準中未明確定義的重要參數及配置方式,按DL/T620-1997《交流電氣裝置的過電壓保護和絕緣配合》的要求修正執(zhí)行。
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