BS EN 50152-3-2:2001 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.单相电流变压器
Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Measurement, control and protection devices for specific use in a.c. traction systems - Single-phase current transformers - Single-phase current transformers