BS EN 50152-3-2-2016 轨道交通.固定装置.交流电开关的专门要求.交流牵引系统特殊使用的测量、控制和保护装置.电流变压器
Railway applications. Fixed installations. Particular requirements for a.c. switchgear. Measurement, control and protection devices for specific use in a.c. traction systems. Current transformers