过流1段保护函数，判断采集到的电流值，如果3次中有2次大于保护整定值，即发出脱扣指令-Over-current protection function, paragraph 1, determine the current value of the collected, and if there are 2 3 times greater than the protection setting value, that is, release orders issued

IED设备通信,用于IED设备与监控系统之间的通信，读取定值和录波等-IED device communication software