我們的實拍跌落式熔斷器戶外高壓真空斷路器保質保量視頻將為您呈現產品的真實面貌和卓越性能,讓您更好地了解產品的優點和特點,不容錯過!
以下是:跌落式熔斷器戶外高壓真空斷路器保質保量的圖文介紹
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專注大理避雷器行業十余年
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大理避雷器的詳細介紹
嚴謹工藝案例豐富
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易爆等危險性環境,年度溫差變比在±40℃以內的戶外場所。其選擇是按照額定電壓和額定電流兩項參數進行,也就是熔斷器的額定電壓必須與被保護設備(線路)的額定電壓相匹配。熔斷器具的額定電流應大于或等于熔體的額定電流。而熔體的額定電流可選為額定負荷電流的1.5~2倍。此外,應按被保護系統三相短路容量,對所選定的跌落式熔斷器進行校核。保證被保護系統三相短路容量小于熔斷器額定斷開容量的上限,但必須大于額定斷開容量的下限。若跌落式熔斷器的額定斷開容量(一般是指其上限)過大,很可能使被保護系統三相短路容量小于熔斷器額定斷開容量的下限,造成在熔體熔斷時難以滅弧,終引起熔管燒毀,爆炸等事故。一些供電單位仍處于農網改造高峰,在選用該類熔斷器時,必須嚴把產品質量關,保護合格的設備入網,同時要注意到它的額定斷開容量上限值和下限值
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WIDE APPLICATION RANGE
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