An IEC Standard Digital Output Current Sensor

The article considers an International Electrotechnical Commission (IEC) standard digital output current sensor with improved current conversion characteristics and expanded functionality. The results of the study of primary electromagnetic current converters used in the current sensor are presented. It is proposed to combine the functions of converting signals into the digital format of the IEC 61850 standard and the functions of current relay protection in the current sensor. The features of the newly developed sensors are shown, allowing for a significant improvement in the main characteristics of relay protection.