Home / Standards / GB/T 25890.4-2010 GB/T 25890.4-2010 Active Railway applications - Fixed installations - DC switchgear - Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches 轨道交通 地面装置 直流开关设备 第4部分：户外直流隔离开关、负荷开关和接地开关 Standard Type GBT ICS 29.280 CCS S35 Status 现行 Issue Date 2011-01-10 Implementation 2011-06-01 Responsible Dept 国家铁路局 Drafting Unit N/A