SHR(NHF)系列負(fù)荷鐵殼開關(guān)
概述
SHR(NHF)系列防護(hù)型熔斷器式負(fù)荷開關(guān)，適用于50Hz，額定工作電壓415V（380）以下，直流額定電壓至440V，額定工作電流1600A以下。在工業(yè)企業(yè)配電系統(tǒng)中做不頻繁接通及分?jǐn)嚯娐贰?br />使用環(huán)境
1、         海拔高度2000米，
2、         環(huán)境溫度不高于+40℃，不低于-5℃，
3、         空氣相對濕度不大于95%，
4、         無爆炸危險的介質(zhì)，且介質(zhì)無足以腐蝕金屬和破壞絕緣的氣體與塵埃，
5、         無顯著搖動和沖擊震動的地方，
6、        無雨雪侵襲的環(huán)境。
結(jié)構(gòu)特點
本開關(guān)采用防護(hù)鋼制鐵殼，內(nèi)裝負(fù)荷隔離開關(guān)及熔斷器組，配有柜外操作自鎖手柄。
三、   主要技術(shù)參數(shù)
型號含義


主要技術(shù)參數(shù)

使用維護(hù)
1.開關(guān)應(yīng)垂直安裝，安裝前應(yīng)檢查內(nèi)容是否符合使用要求。確認(rèn)開關(guān)的使用狀態(tài)，開關(guān)處于閉合狀態(tài)，開關(guān)箱的門自鎖打不開，只有處于分?jǐn)酄顟B(tài)開關(guān)箱的門才能打開。
2.開關(guān)上端子和接線裸母線應(yīng)包扎絕緣物，防止開關(guān)相間短路。
3.開關(guān)每使用半年左右，就應(yīng)該進(jìn)行一次維護(hù)。若轉(zhuǎn)動部位不靈活，可涂潤滑油。檢查緊固件是否有松動，且針對不同情況加以維修，若損壞嚴(yán)重則應(yīng)停止使用。

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