Protective Relay Settings: motor vibration limit
vib B rigid med 246p to vib B rigid med 8p
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 | acceleration g pk (g peak) | displacement mils pk (mils peak-to-peak) | mounting type | nema frame range | pole count | standard | velocity in s pk (in/s peak) | vibration grade |
|---|---|---|---|---|---|---|---|---|---|
| motor vibration limit | vib B rigid med 246p | 0.33 | 1.3 | rigid | 210 to 440 | 2/4/6-pole | IEEE Std 3004.8-2016 | 0.08 | B |
| motor vibration limit | vib B rigid med 8p | 0.24 | 1.0 | rigid | 210 to 440 | 8+-pole | IEEE Std 3004.8-2016 | 0.06 | B |
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