NHF-400/3R,NHF-400/3,NHF-400/3Z 負荷鐵殼開關
1. NHF系列熔斷器(qi)式開關,適用于(yu)交流50~60Hz,額定絕(jue)緣電壓至500V,額定工作(zuo)電壓415V(包括380V)有,約定(ding)發熱電(dian)流至400安培的(de)電路(lu)(lu)中,作為(wei)(wei)手動不(bu)頻(pin)繁(fan)地接通與(yu)分斷負載(zai)電路(lu)(lu)和線(xian)路(lu)(lu)的(de)過載(zai)與(yu)短路(lu)(lu)保護之用。由于裝有中性(xing)接線(xian)柱,熔(rong)斷器式開關(guan)也可作為(wei)(wei)一(yi)般照明(ming)等回路(lu)(lu)的(de)控(kong)制(zhi)開關(guan)之用。
高(gao)短路(lu)電流的配電回路(lu)和電動機回路(lu)作(zuo)為電源隔離開關(guan)、負荷開關(guan)和應急開關(guan)、供(gong)電路(lu)通斷及保護之(zhi)用。
2.NHF負荷(he)開關箱適用于下(xia)列(lie)工(gong)作條件:
1)海(hai)拔不高于(yu)2000米
2)周(zhou)圍環境溫度不(bu)高于+40攝氏度不低(di)于-5攝氏(shi)度(du)
3)空(kong)氣相對濕度不大于90%(+25℃)
4)垂直安(an)裝于(yu)無強烈振動和沖擊的場(chang)合
5)在(zai)無爆(bao)炸氣(qi)體和腐蝕氣(qi)體的場(chang)合(he)
2.NHF負荷開關(guan)箱分類和型式(shi)
1)按約定發熱電流分有100,200,315,400安培四個等級(ji)
2)按結(jie)構型式分有開啟式和(he)封閉式兩種
3)按(an)極數分有3極帶中性接線(xian)柱和3極不帶中性接(jie)線柱,4極三種
3.NHF負(fu)荷開關箱結構特征
熔斷(duan)器(qi)式開關主(zhu)要由觸頭滅弧(hu)(hu)系統(tong)(tong),熔斷(duan)器(qi),操(cao)作機(ji)構(gou)和外(wai)殼四(si)個部分組成。滅弧(hu)(hu)室由耐弧(hu)(hu)塑料壓(ya)制(zhi),機(ji)構(gou)簡單,便(bian)于(yu)拆(chai)裝(zhuang)。觸頭系統(tong)(tong)采(cai)用雙斷(duan)點(dian)直動式長形觸頭型式,動觸點(dian)是以有填料封閉管(guan)式熔斷(duan)器(qi)為橋臂的雙斷(duan)點(dian)U型觸(chu)頭(tou),長形觸(chu)頭(tou)有較高的(de)電動(dong)穩(wen)定性,雙斷(duan)點有較高的(de)分斷(duan)能力。有填料封閉(bi)管式熔(rong)斷(duan)器的(de)極限分斷(duan)能力達(da)50千安,可(ke)以(yi)滿足(zu)一(yi)般電網(wang)的(de)要(yao)求(qiu)。操作機(ji)構采用單桿抽(chou)拉式結構和彈(dan)簧儲能原理。用同(tong)一(yi)彈(dan)簧執(zhi)行開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)接(jie)通(tong)(tong)分(fen)(fen)斷(duan)的(de)機(ji)能,保(bao)(bao)證(zheng)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)能可(ke)靠的(de)接(jie)通(tong)(tong)和分(fen)(fen)斷(duan),并(bing)有(you)明顯的(de)通(tong)(tong)斷(duan)標志。抽(chou)拉式操作手(shou)柄,在開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)接(jie)通(tong)(tong)或分(fen)(fen)斷(duan)以(yi)后(hou),可(ke)以(yi)推(tui)入開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)外(wai)殼內,外(wai)形美觀,開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)蓋(gai)殼裝(zhuang)有(you)連(lian)鎖(suo)裝(zhuang)置,保(bao)(bao)證(zheng)在蓋(gai)子打(da)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)后(hou)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)不能接(jie)通(tong)(tong)及開(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)接(jie)通(tong)(tong)后(hou)蓋(gai)子不能打(da)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)。
NHF-400/3,NHF-400/3R,NHF-400/3Z 負荷鐵殼開關
NHF系列鐵殼負荷開關:
NHF-30/3,NHF-30/3R,NHF-30/3Z負荷鐵殼開關
NHF-30/4,NHF-30/4R,NHF-30/4Z負荷鐵殼開關
NHF-32/3,NHF-32/3R,NHF-32/3Z負荷鐵殼開關
NHF-32/4,NHF-32/4R,NHF-32/4Z負荷鐵殼開關
NHF-40/3,NHF-40/3R,NHF-40/3Z負荷鐵殼開關
NHF-40/4,NHF-40/4R,NHF-40/4Z負荷鐵殼開關
NHF-80/3,NHF-80/3R,NHF-80/3Z負荷鐵殼開關
NHF-80/4,NHF-80/4R,NHF-80/4Z負荷鐵殼開關
NHF-100/3,NHF-100/3R,NHF-100/3Z負荷鐵殼開關
NHF-100/4,NHF-100/4R,NHF-100/4Z負荷鐵殼開關
NHF-160/3,NHF-160/3R,NHF-160/3Z負荷鐵殼開關
NHF-160/4,NHF-160/4R,NHF-160/4Z負荷鐵殼開關
NHF-200/3,NHF-200/3R,NHF-200/3Z負荷鐵殼開關
NHF-200/4,NHF-200/4R,NHF-200/4Z負荷鐵殼開關
NHF-250/3,NHF-250/3R,NHF-250/3Z負荷鐵殼開關
NHF-250/4,NHF-250/4R,NHF-250/4Z負荷鐵殼開關
NHF-315/3,NHF-315/3R,NHF-315/3Z負荷鐵殼開關
NHF-315/4,NHF-315/4R,NHF-315/4Z負荷鐵殼開關
NHF-400/3,NHF-400/3R,NHF-400/3Z負荷鐵殼開關
NHF-400/4,NHF-400/4R,NHF-400/4Z負荷鐵殼開關
NHF-630/3,NHF-630/3R,NHF-630/3Z負荷鐵殼開關
NHF-630/4,NHF-630/4R,NHF-630/4Z負荷鐵殼開關
NHF-800/3,NHF-800/3R,NHF-800/3Z負荷鐵殼開關
NHF-800/4,NHF-800/4R,NHF-800/4Z負荷鐵殼開關
NHF-1000/3,NHF-1000/3R,NHF-1000/3Z負荷鐵殼開關
NHF-1000/4,NHF-1000/4R,NHF-1000/4Z負荷鐵殼開關
NHF-1250/3,NHF-1250/3R,NHF-1250/3Z負荷鐵殼開關
NHF-1250/4,NHF-1250/4R,NHF-1250/4Z負荷鐵殼開關
NHF-1600/3,NHF-1600/3R,NHF-1600/3Z負荷鐵殼開關
NHF-1600/4,NHF-1600/4R,NHF-1600/4Z負荷鐵殼開關
NHF-2000/3,NHF-2000/3R,NHF-2000/3Z負荷鐵殼開關
NHF-2000/4,NHF-2000/4R,NHF-2000/4Z負荷鐵殼開關
NHF-400/3R,NHF-400/3,NHF-400/3Z 負荷鐵殼開關