HE Jiali, SONG Congju. Protective relaying theory of power system. Beijing: China Power Press, 2004.

贺家李, 宋从矩. 电力系统继电保护原理. 北京: 中国电力出版社, 2004.

互联网

Current transformers are instrument transformers used in conjunction with ammeters , control circuits and protective relaying.

电流互感器,是一种仪表变压器,通常与电流表、控制电路、保护继电器配套使用.

互联网