额定电压 Rated voltage kV 12 24 额定频率 Rated frequency Hz 50/60 50/60 额定短时工频耐压 Rated power-frequency withstand voltage kV 42 65 额定雷电冲击耐压 Rated lightning impulse withstand voltage kV 75 125 额定峰值耐受电流 Rated peak withstand current up to kA 63 50 额定短路关合电流 Rated short-circuit making current up to kA 63 50 额定短时耐受电流 Rated short-time withstand current 2 s up to kA 25 20 4 s up to kA 20 20 额定短路开断电流 Rated short-circuit breaking current up to kA 25 20 额定母线电流 Rated normal current for busbar up to A 630 环境温度 Ambient air temperature 不带二次设备 Without secondary equipment °C -25/-40* to +70 带二次设备 With secondary equipment °C -5/-15*/-25* to +55 存储 / 运输 Storage/transport °C -40 to +70 防护等级 Degree of protection 一次部分 Primary part IP67 柜体外壳 Switchgear IP2X / IP3X 二次部分 Secondary part IP3X / IP4X 内部燃弧等级* IAC* 靠墙安装 Wall-standing arrangement A FL up to 21kA (1s) 自由安装* Free-standing arrangement* A FLR up to 21kA (1s)