Protective Relay Settings: device function
dev39 to dev49S
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 | dev39 | 39 | — | — | Mechanical condition monitor (vibration) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev40 | 40 | PDUP | FL | Loss-of-field / underexcitation protection (synchronous motors) | Table B.2 | IEEE Std 3004.8-2016 |
| device function | dev41 | 41 | — | FC | Field contactor or circuit breaker (synchronous motors) | Table B.2 | IEEE Std 3004.8-2016 |
| device function | dev45 | 45 | — | — | Atmospheric condition monitor | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev46 | 46 | PTOC | — | Reverse phase or phase balance current relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev47 | 47 | PTOV | — | Phase sequence voltage relay / negative sequence voltage relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev48 | 48 | PMSS | — | Incomplete sequence relay / motor starting-time supervision / restart inhibition | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev49 | 49 | PTTR | OL | Thermal overload relay (operated by motor current replica) | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev49R | 49R | PTTR | — | Rotor thermal overload relay | Table B.1 | IEEE Std 3004.8-2016 |
| device function | dev49S | 49S | PTTR | — | Stator winding thermal overload relay (including embedded detectors) | Table B.1 | IEEE Std 3004.8-2016 |
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