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
Railway applications—Fixed installations—DC switchgear—Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches
标准状态
发布于：2026-01-28
实施于：2026-08-01
废止
Railway applications—Fixed installations—DC switchgear—Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches