- 2 Time-delay
- 12 Overspeed
- 14 Underspeed/ Locked Rotor Protection
- 21 Distance
- 21N Distance Protection, Earth
- 21FL FaultLocator
- 25 Synchronism-check
- 26 Overtemperature
- 27 Undervoltage
- 30 Annunciator
- 32 Directional power
- 37 Undercurrent or underpower
- 38 Bearing
- 40 Field
- 46 Reverse-phase or Negative Sequence
- 47 Phase-sequence voltage or Negative sequence voltage
- 49 Thermal
- 50 Instantaneous overcurrent
- 51 AC time overcurrent or Inverse time overcurrent
- 51G Inverse time earth fault overcurrent
- 51N Definite time earth fault overcurrent
- 51V Voltage restrained/controlled overcurrent
- 55 Power factor
- 59 Overvoltage
- 59N Neutral Point Displacement
- 60 Voltage balance
- 63 Pressure
- 64 Apparatus ground or Earth-Fault
- 67 AC directional overcurrent
- 67N Directional Earth Fault
- 68 Blocking
- 69 Permissive
- 74 Alarm
- 76 DC overcurrent
- 78 Out-of-step or Phase angle
- 79 AC reclosing or Autoreclose
- 81 Frequency
- 81U Underfrequency
- 81O Overfrequency
- 85 Carrier or pilot-wire
- 86 Lock out
- 87 Differential
- 94 Tripping
Monday, July 27, 2009
ANSI Device Numbers
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