概述　　FN-系列戶內(nèi)高壓負荷開關,具有設計先進、操作簡便、結構緊湊、體積小、功能全、重量輕、分合速度快、可靠性高等優(yōu)點。適用于交流Hz，額定電壓KV、額定電流A及三相配電系統(tǒng)中，特別適用于城網(wǎng)建設改造工程，高層建筑，公共設施的環(huán)網(wǎng)供電，是箱式變電站、變壓器保護的理想產(chǎn)品。主要技術參數(shù)序號項目電位FN-D/FN-DR/-.額定電壓KV額定頻率Hz額定電流Amin工頻耐受電壓kv對地及相間；隔離斷口雷電沖擊耐受電壓對地及相間；隔離斷口相間距離mm額定動穩(wěn)定電流KA 額定熱穩(wěn)定電流KA/S/ 額定電纜充電電流A額定轉(zhuǎn)移電流 開斷空載變壓器容量KVA額定短路開斷電流（熔斷值）KA .-額定短路關合電流（峰值）額定有功負載開斷電流 接地開關額定熱穩(wěn)定電流KA/S/額定有功負載電流開斷次數(shù) 機械壽命外形圖 Summary　　It is used in three-phase power distribuiton of AC Hz rated voltage kv and rated current A Esp For power ring network in city net work construction improvement high-rise buildings and public facilities as an ideal product to protect package substation and transformer It has the featrres of advanced design simple operation impact structruee smatr appearancelight weight complete function fast on-and off speed and high reliability.