一、用途:GN-型系列户内交流高压隔离开关，适用于额定电压3、6、12、15、20、24、30KV三相交50Hz的电网中作为有电压无负载情况下分合线路之用。        (注:紫铜全部采用镀银工艺)Purpose and Usage        GN-series indoor AC high voltage isolating switch Can apply in        electric network of three-phase AC,50Hz,rated voltage of l2kV and        below to close or open circuit in no load position with voltage．二、工作条件:海拔不超过100米；周围空气温度不高于+40℃及不低于-12℃；空气相对湿            度不高于90％的户内场所(当温度为+25℃)无导电性尘埃的环境中；无破坏            金属和绝缘的腐蚀性气体的物体；无剧烈震动和冲击的地方；无燃烧与爆炸            危险的环境中；Working conditions            Altitude not more than 1000m;Ambient temperature scope;from            l2℃ to 40℃ Relative humidity indoor lessthan 90％under25℃            There shall have no conductive dust;no corrosive gases;no            severe vibration and impact； no combustion and explosion on            the site for switch opersting.三、技术参数：Technical parameter 型号Type额定电压Rated voltage额定电流Rated current工频耐受电压Power frequencyWithstand voltaege雷电冲击耐受电压Full ware lighting impulse withstand voltageGN-6/400A6kV400A42kV75kVGN-12/600A12kV600A42kV75kVGN-24/2000A24kV2000A65kV125kV  四、安装尺寸：Dimensions of outline and Installation