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What are Most important logical nodes in SEPAM IEC61850?

The IEC61850 protocol uses several abbreviations. It is useful to know what these group designator letter means. There are also a set number of each of the logical node groups.
Logical Node Groups Group Designator Number
1. System logical Nodes L 2
2. Protection Functions P 27
3. Protection Related Functions R 10
4. Supervisory Control C 4
5. Generic References G 3
6. Interfacing and Archiving I 4
7. Automatic Control A 4
8. Metering and Measurement M 7
9. Switchgear X 2
10. Instrument Transformer T 2
11. Power Transformer Y 4
12. Further Power System EQUIPMENT Z 14
13. APS_SENSORS S 3

This list is not exhausted and can be evoluated

AEDL3
Legacy KB System (APS) Data: RESL204862 V1.0, Originally authored by MiZe on 03/19/2011, Last Edited by MiZe on 03/19/2011
Related ranges: SFT 2841 - SFT2848 (Sepam series 20, 40, 80 software)
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