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How many data classes in the IEC61850 protocol are there and what are the subcategories?

There are a total of 355 data classes. The are divided into 7 categories as listed below:
Data Classes Number
1. System Information 13
2. Physical Device Information 11
3. Measureands 66
4. Metered Values 14
5. Controllable Data 36
6. Status Information 85
7. Settings 130

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