标准号:SIS SEN 27 03 E-1957
中文标准名称:设备转换
发布日期:1957/3/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:These standards apply to instrument transformers for frequencies between 15 and 60 Hz intended for current supply to measuring instruments, meters, relays and other supervisory equipment.