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  • QZ610電動機啟動器

    更新:2013/9/12 13:32:24      點擊:
    • 產品品牌   
    • 產品型號   QZ610
    • 產品描述

      QZ610電動機啟動器,是上海人民電氣有限公司 http://www.china168yin.com 為您提供的關于QZ610電動機啟動器型號,QZ610電動機啟動器價格,有關QZ610電動機啟動器的相關資...

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    產品描述

    適用于交流50Hz,額定電壓380V,功率4-14kW的三相異步電動機作不頻繁接通及停止之用。帶有熱繼電器、斷相瞬時動作裝置和分勵脫扣器,能有效地對電動機過載及斷相起保護作用。它廣泛適用于潛水電泵、脫粒機、紡織機械、水泥礦山機械和通電機械作電動機保護開關。

    2.1外殼由薄鋼板拉伸而成,表面采用環氧粉末靜電噴涂,具有較高機械強度和防護性能;
    2.2通過改進后零部件布置緊湊,體積小,移動方便;
    2.3結構簡單,使用安全可靠、且維修方便;
    2.4它是手動接通和分斷接觸器脫扣結構,在電網電壓波動大的場合仍能可靠地工作;
    2.5裝有瞬時斷相保護裝置,能有效地對電動機斷相起動和運行保護;
    2.6在箱與蓋間、進線、按鈕處都有橡膠密封環,具有一般懸掛防水功能。
    4.1海拔高度不超過1000m;
    4.2周圍介質溫度不高于+40及不低于-30;
    4.3空氣相對溫度不大于85(相當于+205);
    4.4在無爆炸危險的介質中,且介質中無足以腐蝕金屬和破壞絕緣體的物質和導電塵對埃的地方。
    5.1電動機的額定電流必須與熱繼電器的整定電流斷相瞬時動作電流相符,否則不起過載和斷相瞬時保護作用。
    5.2要專配潛水電泵使用的,出廠時已將熱繼電器和斷相瞬動時動作電流定好,用戶不必再作調整,若所配電動機的額定工作電流比瞬時斷相保護整定電流偏大時,起動器將不能起動(即一起動就跳閘)。
    5.3按鈕合上時速度應快,停電時應把開關分斷。
    5.4若電動機發生故障,起動器已保護跳閘,應先排除故障等5分鐘方可起動,如起動立即跳閘,絕不能強迫起動,由于勵脫扣線圈為短時設計,若故障沒有排除進行強迫起動則要燒毀線圈或損壞電動機。
    5.5起動器定期清理內部塵埃,操作機構的活動部位可加少量潤滑油使其靈活。
    5.6起動器如放置日久受潮,應進行干燥后再使用,并用500伏兆歐表測量,其絕緣電阻應不小于5兆歐。

    6.1起動器在安裝前必須先檢查電源電壓,電機額定電流與起動器的整定電流及斷相瞬時動作電流是否相符。

    6.2各連接螺釘是否松動,操作機構是否靈活。
    6.3電源進線必須先通過熔斷器,在重載起動時,熔絲的額定電流為電機額定電流的33.5倍,一般負載可按2.53倍選用,熔座的額定電流必須大于熔絲的電流。
    6.4外殼應可靠接地。
    6.5連接導線應采用不小于2.5mm2截面的銅芯絕緣電線。
    6.6安裝完畢后,必須墊好橡膠圈環,裝好箱蓋方可使用。

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