Protective Relay Settings: device function
dev79 to dev87L
Protective relay settings, coordination parameters, and motor/bus protection data per IEEE C37, IEEE 242, IEC 60255, and IEEE 3004 series. Covers: IEEE C37.112 inverse time-overcurrent curve constants (A, B, p, tr) and IEC 60255-151 constants (k, alpha); CT accuracy classes C100/C200/C400/C800 per IEEE C57.13; relay pickup guidance by ANSI device number; CTI per IEEE 242; motor nameplate voltages, surge withstand levels, vibration limits, and relay alarm/trip thresholds per IEEE 3004.8-2016; ANSI device function numbers for motor and bus protection (Tables B.1/B.2/B.3); online partial discharge assessment thresholds; and dual-tie bus differential CT scheme fault response results per IEEE 3004.11-2019.
| parameter type | record id | device number | iec 61850 logical node | nema designation | protection function | source table | standard |
|---|---|---|---|---|---|---|---|
| device function | dev79 | 79 | RREC | — | AC auto reclosing relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev80 | 80 | — | — | Liquid- or gas-flow relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev81 | 81 | PTOF | — | Frequency relay (over/under/rate-of-change) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev81O | 81O | PTOF | — | Overfrequency relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev81R | 81R | PFRC | — | Rate of change of frequency relay (ROCOF) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev81U | 81U | PTUF | — | Underfrequency relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev86 | 86 | — | — | Lockout relay (manually or electrically reset) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev87 | 87 | PDIF | — | Differential protective relay (phasor difference) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev87B | 87B | PDIF | — | Bus differential relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev87L | 87L | PDIF | — | Line differential relay | Table B.1 | IEEE Std 3004.8-2016 |
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