DIN EN 50152-3-3-2001 轨道交通.固定装置.交流电开关的特殊要求.第3-3部分:交流牵引系统专用测量、控制和保护装置.单相感应电压变压器
Railway applications - Fixed installations; Particular requirements for AC switchgear - Part 3-3: Measurement, control and protection devices for specific use in AC traction systems; Single-phase-inductive voltage transformers; German version EN 50152-3-3