Part 7-1 Basic communication structure for substations and Feeder equipment-Priciples and model Part 7-2 Basic communication structure for substations and feeder equipment Abstract communication service interfaces Part 7-3 Basic communication structure for substations and feeder equipment Common data classes

GB61850-7-1_通讯结构（原理模型）.pdf
GB61850-7-2_抽象通讯服务接口.pdf

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