Protective Relay Settings: motor_protection_setting
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 | alarm threshold | description | device number | iec 61850 logical node | nema designation | standard | trip threshold |
|---|---|---|---|---|---|---|---|---|
| motor_protection_setting | ps_dev27_59_alarm | ±10% of nameplate voltage (NEMA MG-1 motors rated for ±10%) | Undervoltage/overvoltage (27/59) alarm — NEMA MG-1 | 27/59 | PTUV/PTOV | UV/OV | IEEE Std 3004.8-2016 | — |
| motor_protection_setting | ps_dev27_59_trip | — | Undervoltage/overvoltage (27/59) trip | 27/59 | PTUV/PTOV | UV/OV | IEEE Std 3004.8-2016 | ±15% to 20% of nameplate voltage; use time delay to prevent nuisance tripping |
| motor_protection_setting | ps_dev38_mineral | 90 °C | Bearing temperature (38) — mineral oil lubricant | 38 | IEEE Std 3004.8-2016 | 100 °C |
This is a sample. Search the full protective relay settings dataset and 350+ more by creating a free account and accessing the database.
Get started for FREE