NHF-630/3R,NHF-630/3,NHF-630/4,NHF-630/4R 負荷鐵殼開關
1. NHF系(xi)列熔(rong)斷器式開關(guan),適用(yong)于交流(liu)50~60Hz,額(e)定(ding)絕緣電壓至500V,額(e)定(ding)工作電壓415V(包括(kuo)380V)有,約定發熱(re)電流至400安(an)培的(de)(de)電路(lu)中(zhong),作為手動(dong)不頻繁地接(jie)通與分(fen)斷(duan)負載電路(lu)和(he)線路(lu)的(de)(de)過載與短路(lu)保護之用。由于裝有中(zhong)性接(jie)線柱,熔斷(duan)器式開關(guan)(guan)也(ye)可作為一般(ban)照明等回路(lu)的(de)(de)控制開關(guan)(guan)之用。
高短(duan)路(lu)(lu)電(dian)流的配(pei)電(dian)回路(lu)(lu)和(he)電(dian)動機(ji)回路(lu)(lu)作為(wei)電(dian)源隔離開關(guan)(guan)、負(fu)荷(he)開關(guan)(guan)和(he)應(ying)急開關(guan)(guan)、供電(dian)路(lu)(lu)通斷及(ji)保護之用。
2.NHF負荷開關箱適(shi)用于下列工作條件:
1)海拔(ba)不(bu)高于2000米
2)周圍環(huan)境溫度不高于+40攝(she)氏度不(bu)低于-5攝氏(shi)度(du)
3)空氣相對濕度不大于90%(+25℃)
4)垂直安裝于無強烈振動和沖(chong)擊的(de)場合
5)在無爆炸氣體(ti)和腐蝕氣體(ti)的場合
2.NHF負(fu)荷開(kai)關箱分類和型式
1)按約定發熱電流(liu)分(fen)有100,200,315,400安(an)培(pei)四(si)個等級
2)按結(jie)構型式分有開啟式和封閉式兩種
3)按(an)極數分(fen)有3極帶中(zhong)性(xing)接線(xian)柱(zhu)和3極不帶中性接線(xian)柱,4極三種
3.NHF負荷開關箱結(jie)構特征
熔斷(duan)器(qi)式開關主(zhu)要由(you)觸(chu)頭滅弧(hu)系統,熔斷(duan)器(qi),操作機構和外殼四個部(bu)分組成。滅弧(hu)室由(you)耐(nai)弧(hu)塑料壓制,機構簡(jian)單,便(bian)于(yu)拆裝。觸(chu)頭系統采用雙斷(duan)點(dian)(dian)(dian)直(zhi)動式長形觸(chu)頭型式,動觸(chu)點(dian)(dian)(dian)是以有填料封閉管式熔斷(duan)器(qi)為橋臂的雙斷(duan)點(dian)(dian)(dian)U型觸頭,長形觸頭有較高的(de)電動穩定性,雙斷點有較高的(de)分斷能力(li)。有填(tian)料封閉管式熔斷器的(de)極限分斷能力(li)達(da)50千(qian)安,可(ke)以(yi)滿足一般電網的(de)要求。操(cao)作(zuo)機構(gou)采用單桿抽(chou)拉式結構(gou)和(he)(he)彈簧儲能(neng)原理。用同一彈簧執行(xing)開(kai)關(guan)接(jie)通(tong)(tong)分斷的(de)機能(neng),保證(zheng)開(kai)關(guan)能(neng)可(ke)靠的(de)接(jie)通(tong)(tong)和(he)(he)分斷,并有(you)明顯的(de)通(tong)(tong)斷標(biao)志。抽(chou)拉式操(cao)作(zuo)手柄(bing),在(zai)開(kai)關(guan)接(jie)通(tong)(tong)或(huo)分斷以(yi)后,可(ke)以(yi)推入開(kai)關(guan)外殼內,外形美觀,開(kai)關(guan)蓋(gai)殼裝有(you)連鎖裝置(zhi),保證(zheng)在(zai)蓋(gai)子(zi)打開(kai)后開(kai)關(guan)不能(neng)接(jie)通(tong)(tong)及開(kai)關(guan)接(jie)通(tong)(tong)后蓋(gai)子(zi)不能(neng)打開(kai)。
NHF-630/3,NHF-630/3R,NHF-630/4,NHF-630/4R 負荷鐵殼開關
NHF系列鐵殼負荷開關:
NHF-30A/3,NHF-30A/3R,NHF-30A/3Z負荷鐵殼開關
NHF-30A/4,NHF-30A/4R,NHF-30A/4Z負荷鐵殼開關
NHF-32A/3,NHF-32A/3R,NHF-32A/3Z負荷鐵殼開關
NHF-32A/4,NHF-32A/4R,NHF-32A/4Z負荷鐵殼開關
NHF-40A/3,NHF-40A/3R,NHF-40A/3Z負荷鐵殼開關
NHF-40A/4,NHF-40A/4R,NHF-40A/4Z負荷鐵殼開關
NHF-80A/3,NHF-80A/3R,NHF-80A/3Z負荷鐵殼開關
NHF-80A/4,NHF-80A/4R,NHF-80A/4Z負荷鐵殼開關
NHF-100A/3,NHF-100A/3R,NHF-100A/3Z負荷鐵殼開關
NHF-100A/4,NHF-100A/4R,NHF-100A/4Z負荷鐵殼開關
NHF-160A/3,NHF-160A/3R,NHF-160A/3Z負荷鐵殼開關
NHF-160A/4,NHF-160A/4R,NHF-160A/4Z負荷鐵殼開關
NHF-200A/3,NHF-200A/3R,NHF-200A/3Z負荷鐵殼開關
NHF-200A/4,NHF-200A/4R,NHF-200A/4Z負荷鐵殼開關
NHF-250A/3,NHF-250A/3R,NHF-250A/3Z負荷鐵殼開關
NHF-250A/4,NHF-250A/4R,NHF-250A/4Z負荷鐵殼開關
NHF-315A/3,NHF-315A/3R,NHF-315A/3Z負荷鐵殼開關
NHF-315A/4,NHF-315A/4R,NHF-315A/4Z負荷鐵殼開關
NHF-400A/3,NHF-400A/3R,NHF-400A/3Z負荷鐵殼開關
NHF-400A/4,NHF-400A/4R,NHF-400A/4Z負荷鐵殼開關
NHF-630A/3,NHF-630A/3R,NHF-630A/3Z負荷鐵殼開關
NHF-630A/4,NHF-630A/4R,NHF-630A/4Z負荷鐵殼開關
NHF-800A/3,NHF-800A/3R,NHF-800A/3Z負荷鐵殼開關
NHF-800A/4,NHF-800A/4R,NHF-800A/4Z負荷鐵殼開關
NHF-1000A/3,NHF-1000A/3R,NHF-1000A/3Z負荷鐵殼開關
NHF-1000A/4,NHF-1000A/4R,NHF-1000A/4Z負荷鐵殼開關
NHF-1250A/3,NHF-1250A/3R,NHF-1250A/3Z負荷鐵殼開關
NHF-1250A/4,NHF-1250A/4R,NHF-1250A/4Z負荷鐵殼開關
NHF-1600A/3,NHF-1600A/3R,NHF-1600A/3Z負荷鐵殼開關
NHF-1600A/4,NHF-1600A/4R,NHF-1600A/4Z負荷鐵殼開關
NHF-2000A/3,NHF-2000A/3R,NHF-2000A/3Z負荷鐵殼開關
NHF-2000A/4,NHF-2000A/4R,NHF-2000A/4Z負荷鐵殼開關
NHF-630/3R,NHF-630/3,NHF-630/4,NHF-630/4R 負荷鐵殼開關