This group provides supervision alarms and hence may also be used in conjunction with T Group Logical Nodes as inputs to the S function
| Logical Node | Application |
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1 | SARC | Monitoring and diagnostics for arcs | 2 | SCBR | Circuit breaker supervision | 3 | SECW | Supervision of electrical conductivity in water. | 4 | SFLW | Media flow supervision. | 5 | SIMG | Insulation medium supervision (gas) | 6 | SIML | Insulation medium supervision (liquid) | 7 | SLEV | Media level supervision. | 8 | SLTC | Tap changer supervision | 9 | SOPM | Supervision of operating mechanism | 10 | SPOS | Device position supervision. | 11 | SPDC | Monitoring and diagnostics for partial discharges | 12 | SPRS | Media pressure supervision. | 13 | SPTR | Power transformer supervision | 14 | SSWI | Circuit switch supervision | 15 | STMP | Temperature supervision | 16 | SVBR | Vibration supervision |
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