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        HRW11跌落式開關(guān)

        更新:2013/9/26 13:16:41      點(diǎn)擊:
        • 產(chǎn)品品牌   
        • 產(chǎn)品型號   HRW11
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          HRW11跌落式開關(guān),是上海人民電氣有限公司 http://www.daptopoultryclub.com 為您提供的關(guān)于HRW11跌落式開關(guān)型號,HRW11跌落式開關(guān)價(jià)格,有關(guān)HRW11跌落式開關(guān)的相關(guān)資料,上海...

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        被廣泛應(yīng)用于12kV/15KV配電線路和配電變壓器一次側(cè)作為保護(hù)和進(jìn)行設(shè)備投、切操作之用。?? 主要分為:陶瓷跌落式開關(guān)跟硅橡膠跌落式開關(guān),主要型號:RW3/RW7/RW9/RW10/RW11,硅橡膠隔離開關(guān)在型號前面加“H”,根據(jù)地區(qū)的不同,產(chǎn)品的外形也有所不同,隨著現(xiàn)在技術(shù)的發(fā)展,現(xiàn)在硅橡膠跌落式開關(guān)用途廣泛。?? 一般情況下不允許帶負(fù)荷操作跌落式開關(guān),只允許其操作空載設(shè)備(線路)。但在農(nóng)網(wǎng)10kV配電線路分支線和額定容量小于200kVA的配電變壓器允許按下列要求帶負(fù)荷操作:?? (1) 操作時(shí)由兩人進(jìn)行(一人監(jiān)護(hù),一人操作),但必須戴經(jīng)試驗(yàn)合格的絕緣手套,穿絕緣靴、戴護(hù)目眼鏡,使用電壓等級相匹配的合格絕緣棒操作,在雷電或者大雨的氣候下禁止操作。?? (2) 在拉閘操作時(shí),一般規(guī)定為先拉斷中間相,再拉背風(fēng)的邊相,最后拉斷迎風(fēng)的邊相。這是因?yàn)榕潆娮儔浩饔扇噙\(yùn)行改為兩相運(yùn)行,拉斷中間相時(shí)所產(chǎn)生的電弧火花最小,不致造成相間短路。其次是拉斷背風(fēng)邊相,因?yàn)橹虚g相已被拉開,背風(fēng)邊相與迎風(fēng)邊相的距離增加了一倍,即使有過電壓產(chǎn)生,造成相間短路的可能性也很小。最后拉斷迎風(fēng)邊相時(shí),僅有對地的電容電流,產(chǎn)生的電火花則已很輕微。?? (3) 合閘的時(shí)候操作順序拉閘時(shí)相反,先合迎風(fēng)邊相,再合背風(fēng)的邊相,最后合上中間相。?? (4) 操作熔管是一項(xiàng)頻繁的項(xiàng)目,注意不到便會造成觸頭燒 傷引起接觸不良,使觸頭過熱,? 彈簧退火,促使觸頭接觸更為不良,形成惡性循環(huán)。

        1、環(huán)境溫度:-40℃~40℃; 
        2、海拔不超過1000m;
        3、風(fēng)速不大于35m/s;
        4、地震烈度不超過8度;
        5、熔斷器不適用于下述場所:
        a、有燃燒或爆炸危險(xiǎn)的場所;
        b、有劇烈震動或沖擊的場所;
        c、有異電化學(xué)氣體作用及嚴(yán)重空氣污穢,鹽霧地區(qū)。
         

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