ANSI CODES for protection devices

ANSI CODES for protection devices

List of Device Numbers and Acronyms
1 - Master Element	51 - AC Inverse Time Overcurrent Relay
2 - Time Delay Starting or Closing Relay	52- AC Circuit Breaker
3 - Checking or Interlocking Relay	53 - Exciter or DC Generator Relay
4 - Master Contactor	54 - Turning Gear Engaging Device
5 - Stopping Device	55 - Power Factor Relay
6 - Starting Circuit Breaker	56 - Field Application Relay
7 - Rate of Change Relay	57 - Short-Circuiting or Grounding Device
8 - Control Power Disconnecting Device	58 - Rectification Failure Relay
9 - Reversing Device	59 - Overvoltage Relay
10 - Unit Sequence Switch	60 - Voltage or Current Balance Relay
11 - Multi-function Device	61 - Density Switch or Sensor
12 - Overspeed Device	62 - Time-Delay Stopping or Opening Relay
13 - Synchronous-speed Device	63 - Pressure Switch
14 - Underspeed Device	64 - Ground Detector Relay
15 - Speed - or Frequency, Matching Device	65 - Governor
16 - Data Communications Device	66 - Notching or Jogging Device
17 - Shunting or Discharge Switch	67 - AC Directional Overcurrent Relay
18 - Accelerating or Decelerating Device	68 - Blocking or "Out-of-Step" Relay
19 - Starting to Running Transition Contactor	69 - Permissive Control Device
20 - Electrically Operated Valve	70 - Rheostat
21 - Distance Relay	71 - Liquid Level Switch
22 - Equalizer Circuit Breaker	72 - DC Circuit Breaker
23 - Temperature Control Device	73 - Load-Resistor Contactor
24 - Over Fluxing Relay	74 - Alarm Relay
25 - Synchronizing or Synchronism-Check Device 25A - Automatic Synchronizing relay	75 - Position Changing Mechanism
26 - Apparatus Thermal Device	76 - DC Overcurrent Relay
27 - Under-voltage Relay 27P- Phase UV relay 27N/27G -           Neutral/Ground UV relay 27A- Aux. UV relay	77 - Telemetering Device
28- Flame Detector	78 - Phase-Angle Measuring Relay
29 - Isolating Contactor or Switch	79 - AC Reclosing Relay
30- Annunciator Relay	80 - Flow Switch
31 - Separate Excitation Device	81 - Frequency Relay
32 - Directional Power Relay 32R- Reverse Power Relay 32F- Low Forward Power Relay	82 - DC Reclosing Relay
33 - Position Switch	83 - Automatic Selective Control or Transfer Relay
34 - Master Sequence Device	84 - Operating Mechanism
35 - Brush-Operating or Slip-Ring Short-Circuiting Device	85 - Communications,Carrier or Pilot-Wire Relay
36 - Polarity or Polarizing Voltage Devices	86 - Lockout Relay
37 - Undercurrent or Under-power Relay	87 - Differential Protective Relay
38 - Bearing Protective Device	88 - Auxiliary Motor or Motor Generator
39 - Mechanical Condition Monitor	89 - Line Switch
40 - Loss of field (Field Failure or Loss         of Excitation.	90 - Regulating Device
41 - Field Circuit Breaker	91 - Voltage Directional Relay
42 - Running Circuit Breaker	92 - Voltage and Power Directional Relay
43 - Manual Transfer or Selector Device	93 - Field Changing Contactor
44 - Unit Sequence Starting Relay	94 - Tripping or Trip-Free Relay
45 - Abnormal Atmospheric Condition Monitor	95 - For specific applications where other numbers are not suitable
46 - Reverse-phase or Phase-Balance Current Relay	96 - For specific applications where other numbers are not suitable
47 - Phase-Sequence or Phase-Balance Voltage Relay	97 - For specific applications where other numbers are not suitable
48 - Incomplete Sequence Relay	98 - For specific applications where other numbers are not suitable
49 - Machine or Transformer, Thermal Relay	99 - For specific applications where other numbers are not suitable
50 - Instantaneous Overcurrent Relay	AFD - Arc Flash Detector
DFR - Digital Fault Recorder	CLK - Clock or Timing Source
ENV - Environmental Data	DDR - Dynamic Disturbance Recorder
HIZ - High Impedance Fault Detector	PDC - Phasor Data Concentrator
HMI - Human Machine Interface	PMU - Phasor Measurement Unit
HST - Historian	PQM - Power Quality Monitor
LGC - Scheme Logic	RIO - Remote Input/Output Device
MET - Substation Metering	RTU - Remote Terminal Unit/Data Concentrator
	SER - Sequence of Events Recorder
	TCM - Trip Circuit Monitor
	SOTF - Switch On To Fault  For Description of all codes visit perticular pages...not full completed....as soon as I will finish I will post remaining also.