Home / Standards / GB/T 42149-2022 GB/T 42149-2022 Active Railway application—Fixed installations—Technical specification for current protection of medium voltage power supply system based on digital communication 轨道交通 地面装置 基于数字通信的中压供电系统电流保护技术规范 Standard Type GBT ICS 29.280 CCS S81 Status 现行 Issue Date 2022-12-30 Implementation 2023-07-01 Responsible Dept 国家铁路局 Drafting Unit N/A