Home / Standards / GB/T 1402-2025 GB/T 1402-2025 Upcoming Railway applications—Supply voltages of traction systems 轨道交通 牵引供电系统电压 Standard Type GBT ICS 29.280 CCS S81 Status 即将实施 Issue Date 2025-12-31 Implementation 2026-07-01 Responsible Dept 国家铁路局 Drafting Unit N/A